Great Basin Naturalist
Volume 58 Number 1 Article 5
1-30-1998
Astragalus (Leguminosae): nomenclatural proposals and new taxa
Stanley L. Welsh Brigham Young University
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Recommended Citation Welsh, Stanley L. (1998) "Astragalus (Leguminosae): nomenclatural proposals and new taxa," Great Basin Naturalist: Vol. 58 : No. 1 , Article 5. Available at: https://scholarsarchive.byu.edu/gbn/vol58/iss1/5
This Article is brought to you for free and open access by the Western North American Naturalist Publications at BYU ScholarsArchive. It has been accepted for inclusion in Great Basin Naturalist by an authorized editor of BYU ScholarsArchive. For more information, please contact [email protected], [email protected]. Great Basin Naturalist 58(1), © 1998, pp. 45-53
ASTRAGALUS (LEGUMINOSAE): NOMENCLATURAL PROPOSALS AND NEW TAXA
Stanley L. Welsh!
ABSTRACT.-As part of an ongoing summary revision of Astragalus for the Flora North America project, several nomenclatural changes are indicated. Nomenclatural proposals include A. molybdenus val'. shultziorom (Barneby) Welsh, comb. nov.; A. australis var. aboriginorom (Richardson) Welsh, comb. nov.; A. australis var. cattoni (M.E. Jones) Welsh, comb. nov.; A. aU8tralis var. lepagei (Hulten) Welsh, comb. nov; A. australis var. muriei (Hulten) Welsh, comb. nov.; A. subcinereus var. sileranus (M.E. Jones) Welsh, comb. nov.; A. tegetariaides val'. anxius (Meinke & Kaye) Welsh, comb. nov.; A. ampullarioides (Welsh) Welsh, comb. nov.; A. cutlen (Barneby) Welsh, comb. nov.; and A. laccaliticus (M.E. Jones) Welsh, comb. nov. Proposals of new taxa include Astragalus sect. Scytocarpi subsect. Micl'ocymbi Welsh, subsed. nov., and A. sabulosus var. vehiculus 'Velsh, var. nov. A lectotype is selected for Phaca australis L.
Key words: Astragalus, nomenclature, new taxa.
Astragalus, with more than 350 species and appearance of the entire manuscript within the a great many infraspecific taxa, is perhaps the FNA publication schedule. Format is as under largest genus of North American plants. Its stood for the FNA publication; order of treat complexity has long been recognized as evi ment is phylogenetic as per Barneby, or as per denced by its tangled nomenclatural history. present modification. Experts and others interested in this vast genus have encountered enormous problems in deal Astragalus molybdenus Barneby, Leafl. \ill Bot. ing with it, especially prior to 1964. In that 6:70. 1950. Leadville milkvetcb. year Rupert Barneby, in his classic account (in Low, loosely matted, shortly caulescent my opinion, the most impressive taxonomic perennials, 0.5-6 (14) cm long, from extensive work of tbe century), untied the Gordian knot ly branching subterranean caudex branches. of nomenclature, typification, and classifica Pubescence strigulose-pilosulous, basifixed. tion of Astragalus for North America. Regard Stems largely subterranean, the aerial tips less of ,,,hen a taxonomic work is attempted, prostrate or ascending. Stipules 2-5 mm long, there will be shortfalls in information avail all connate-sheathing. Leaves 1.5-7 cm long; ability, in adequacy ofspecimens, in confluence leaflets (9) 17-25, 2-10 mm long, ovate, ovate of data from disparate regions, and in overall oblong, or elliptic, obtuse, mostly crowded, understanding through time. Despite those folded or involute. Peduncles 1-3 (6.5) cm problems, the Atlas of North American Astra long; racemes loosely 3- to 6-flowered, the axis galus (Barneby 1964) will stand for all time as scarcely elongating, 3-10 (15) mm long in a remarkable attempt to understand this huge fruit; bracts 2.5-5 mm long; pedicels 0.5-2 genus and as a tribute to Barneby's genius. mm long: bracteoles 0-2. Calyx 5.2-7 mm It is hoped that the proposals discussed here long, the tube campanulate, 3-4.2 mm long, in represent some helpful minor additions to tbe teeth subulate, 2-3 mm long. Flowers the work by Barneby, whose treatment is re 10.7-12.5 mm long, pink-purple, lilac, or flected in a large manuscript now in prepara wbitisb, the banner veined and suffused with tion for the Flora Nortb America (FNA) project lilac, recurved through ca 45', the keel tip by S.L. Welsh and R. Spellenberg. Included maculate. Pods ascending, sessile or nearly so, below are sufficient portions of that treatment 7-11 (12) mm long, 3-3.5 mm thick, obliquely to allow the current proposals to be put into ovoid or ovoid-ellipsoid, somewhat incurved, perspective and to be used by workers prior to l-loculed, strigulose. Ovnles 6.
IDepartment of Botany and Range Science, and M,L. Bean Life Science Museum, Brigham Young Univer~ity, Provo, liT 84602,
45 46 GREAT BASIN NATURALIST [Volume 58
1. LeaHets of upper leaves 17-25; racemes 3- to 6 & G.M. Armstrong 3651," holotype POM!; iso flowered; plants of central Colorado and Teton types YlO, NY!, WYO. * Co., Montana val'. molybdenus Leaflets of upper leaves 9-17; racemes mostly l- Flowering July, August. Alpine tundra and or 2 (exceptionally 3)-flowered; plants of the Salt krummholz or on talus, at 2865-3150 m, in Hiver Range, Lincoln Co" Wyoming . Salt River Range, Lincoln Co., Wyoming...... var. shultziorum Plants ofthe 2 varieties are essentially iden tical in aspect, bnt the features noted in the &tragalus molybdenus var. molybdenus key appear to be substantial diagnostic ones. [based on: A. plumbeus Barneby, LeaR w: Bot. 5:195. 1949, non A. plumbeus Gontscharow]. Astragalus australis (L.) Lam., F!. Fr. 2:637. Dwarfalpine plants, the caudex deeply sub 1778. Subarctic milk:vetch. terranean, the branches rhizomatous. Stipules [Phaca australis L., Mant. PI. 1:103. 1767J. 2-5 mm long. Leaves 1.5-7 mm long, (the Moderate, caulescent perennial, (10) 20-30 uppermost) with 17-25 leaflets, 2-10 mm long. cm tall, from a superficial caudex. Pubescence Peduncles 1-3 (6.5) cm long, the racemes 3- to silky-strigose, villous, or villous-tomentose, 6-flowered. Calyx 5.2-7 mm long, the tube basifixed. Stems erect or ascending, few to campanulate, 3-4.2 mm long, the teeth subu several. Stipules (1) 2-7 (11) mm long, often late, 2-3 mm long. Flowers 10.7-12.5 mm veined, semicoriaceous, at least the lowermost long, pink-purple, lilac, or whitish, the banner connate-sheathing. Leaves (1) 2-7 (10) cm recurved through ca 45'. Pods rather abruptly long; leaflets (5) 7-15, 3-28 (35) mm long, 1-7 contracted into a short beak. Ovules 6. *Type: (8) mm wide, oblong, linear-elliptic, elliptic, or "Colorado: about 4 miles east of Leadville, linear-oblong, acute, villous to glabrate on both Lake County Ripley & Barneby No. 9994 sides. Peduncles 2-10 (14) cm long; racemes ... west slope of Mosquito Pass, east of Lead 2- to 40-flowered, rather compact and ascend ville, No. 10045"; syntypes CAS!; isosyntypes ing at anthesis, the axis 1-15 em long in fruit; GH!, K, NY!, POM!, RM!, RSA, US, WTU.* bracts 1.2-5 mm long; pedicels 0.8-3.5 mm Flowering July, August. Alpine tundra com long; bracteoles O. Calyx 3.7-6.4 mm long, the munity at 3780-3965 m, along the Continental tube 2.1-5 mm long, campanulate, villous, the Divide, along the boundaries between Gunni teeth 1-3 mm long, subulate. Flowers 7.5 son-Pitkin, Lake-Park, and Park-Summit coun 14.5 mm long, ochroleucous or snffnsed with ties, in central Colorado, and disjunct in Teton pink, the wing petals bilobed apically. the ban Co., Montana. ner recurved through 40-50°. Pods pendu lous, stipitate, the stipe 2.5-8 (10) mm long, &tragalus molybdenus var. shultziorum the body obliquely and narrowly elliptic in (Barneby) Welsh comb. nov. outline, 13-27 mm long, 3-9 (11) mm wide, [based on: A. shultziorum Barneby, Bdttonia 33:156. semibilocular, the septum 0-0.6 mm wide, 19.58]. glabrons or pubescent. Ovules 8-16; 2n ; 16, Dwarf alpine plants, the caudex deeply 32, 48. *Type: "Habitat in alpinis Helvetiae, subterranean, the branches rhizomatous. Stip ltaliae, Gallo Provinciae," lectotype here des ules 2-3 mm long. Leaves 1.5-7 (8) cm long, ignated, illustration of 'l\.stragaloides Alpina the uppermost with 9-15 (17) leaflets, 2-7 mm supina glabra, foliis auctioribus," in Tilli, Cat. long, lance- or ovate-elliptic, obtuse to acute, P!. Hart. Pisani 19. 5.14. f. 1. 1723!* mostly distant, flat or loosely folded. Pedun American materials of A. australis are por cles (0.5) 1-4 cm long, the racemes (usually 2-) tions of a vast circumboreal species complex 1- to 3-flowered. Calyx (5) 5.7-6.7 mm long, the demonstrating great variability, beginning tube campaoulate, (3) 3.4-4 mm long, the teeth with the typical material in southern Europe subulate, 1.8-3.3 mm long. Flowers 11-12 and extending eastward. Asiatic plants passing mm long, whitish lavender tinged, the banner under the names A. tugaranovii Basilevskaja, veined and snffused with lilac, recurved A. gorodkovii Jurtsev, A. tolmaczevii Jurtsev, through ca 50', the keel tip maculate. Pods and A. kolymensis Jurtsev (Korobkov et al. tapering to an elongate beak. Ovules 8 or 9. 1986) belong to this complex, with the entities *Type: "Wyoming. Lincoln County: stony hill having the same degree of morphological top, 9500 ft, mountains near Cottonwood integrity (or lack thereof) as the American Lake, E of Smoot, 31 Jul1923 (fl), E.B. Payson materials. Varietal segregation within the North 1998J ASTRAGALUS NOMENCLATURE 47
American variants has been based on differ long, whitish to purplish. Pod stipe 4-6 mm ences in pubescence, leaflet shape, and pod long, the body obliquely ellipsoid to narrowly size and shape. Several varieties have been oblong, 11-24 mm long, 4-7 mm wide, the proposed, with the best summary that of valves glabrous to occasionally strigose. 'Type: Barneby (1964:137). Often great variation Alaska, "Central Yukon R. distr.: Porcupine R., occurs within a single population, but some of 45 miles from its mouth, O.J. Murie 2162, the proposed taxa have apparent geographical June 26, 1926," holotype 51' correlation; others are haphazard or represent Flowering June, July. Mountain slopes, ridge a mere continuum. Many of the variants can crests, meadows, and less commonly on gravel be determined mechanically on a 2n basis, bars, at ca 200-860 m, east central Alaska, and essentially as summarized by Barneby. It will British and Barn mountains ofnorthern Yukon, be possible by using the following key to iden and in the Yukon River Valley and vicinity of tify the most conspicuous morphological, but Kluane National Park, southwest Yukon. admittedly transitional, variants. Variability is Diagnostic criteria that would separate speci the rule within the species, and a more detailed mens from northern Yukon, those with petio segregation, though possible, might separate late leaves, from plants at the ly.pe locality of morphologically similar individuals-not taxa. A. australi.s, sens. str., in the Alps of southern Perhaps even the following proposals do not Europe, are not resolved herein. They appear represent taxa, per se, but there are hints of to be essentially identical. Petiolate specimens correlation of some features with geographical occur throughout the range of var. mwiei as and ecological distributions. here interpreted. The type of this variety has strigutose pods, unusual in plants from the 1. F1O\~rs 7.5-11 (12) mm long; calyx 3.5--5.9 rom Arctic, but pubescence does not seem to have long; plants ofbroad dishibution. diagnostic value within the group. Many of 2. Leaves petiolate; plants from eastern Alaska the muriei specimens were from ridge tops, and Yukon Va!. muriei 2. Leaves sessile, the lower pair of leaflets aris especially in northern Yukon, with a smaller ing from the stipules, appearing as if foliose number from stream gravels (the apparent stipules; plants from southern Yukon south preferred habitat of most of var. lepagei, q.v.). ward (Rock.)' Mts. and Olympics). Plants from southwestern Yukon are more 3. Pods 3--7 (9) mm broad, seldom much ifat all bladdery; pedun.cles 6.5-15 em long; nearly uniform and belong to the "linearis" plants widely distributed . phase, whose type is from the famous Lake •••••••••••••••••••••••• \/ClJ". ~J1l()1"tl11l Labarge (now "Laberge," collected by J.B. 3. Pods 7-9 (11) mm broad. bladdery Tarltoo in 1899, hololy.pe NY!, isolype US!). inflated; peduncles 3--6.5 em long; plants hown only from the Olympic Mts., Wash· Astragalus australis var. lepagei (Hulten) ington var. cottoni 1. Flowers 11.5-13.8 (14.5) mm long; calyx 5.7-6.5 Welsh comb. nov. [based on, A. lepagei Hulten, FI. Alaska & Yukon 1761. mm long; plants from west central to northern 1950; A tugarinovii Basilevskaja; A. tolmnczcliii urt Alaska, east to northem Yukon and Northwest J Territories var.lepagei sevJ. Stems (8) 2~0 cm long, sprawling to Astragalus australis var, "'''riei (Rydberg) ascending. Leaves 3-9 em long, sessile or def Welsh, comb, nov. initely petiolate; leaflets (5) 9-15. 6-33 mm [based on: A. aboriginomm val'. muriei Hulten, Fl. long, elliptic to lanceolate, lance-oblong, lin Alaska & Yukon 1080. 1947; Atelophragma lineare ear-Ianceolate or linear, acute to apiculate, Rydberg, Bull. Torrey Bot. Club 40:50. 1913]. glabrous to strigulose, pilosulous, or villous. Stems 7-35 cm long, ascending. Leaves (2) Peduncles (4) 4.5-10 cm long, typically longer 3-6.5 cm long; leaflets (7) 9-15, 6--15 mm than the leaf. Racemes rather densely to long, linear to narrowly elliptical, acute to loosely 8- to 29 (32)-lIowered, the axis 3-14 obtuse, glabrous to strigulose-pilosulous or cm long in fruit. Calyx (4.7) 4.8-6.5 cm long, villous. Peduncles 2.5-11 cm long, typically the tube 2.8-5 mm long, eampanulate to longer than the leaf. Racemes rather densely deeply so, black strigulose to villous, the teeth to somewhat loosely (6) 8- to 21-flowered, the (I) 1.4-2.4, narrowly subulate. Flowers (9.5) axis 1.5-9.5 cm long in fruit. Calyx 4.2-5.5 11.5-13.8 mm long, whitish to purplish. Pod mm long, the tube 2.4-2.7 mm long, campanu stipe (3) 5-7 mm long, the body obliquely late, strigulose to villous, the teeth 1.1-2.5 mm ellipsoid to narrowly oblong, (10) 15-30 mm long, narrowly subulate. Flowers 8.5-9.5 mm long, (3) 6--8.5 mm wide, the valves typically 48 GREAT BASIN NATURALIST [Volume 58 glabrous. *1\,pe: 'Arctic Coast distr.: Umiat, through its huge geographical range, at ca July 29, 1948, Lepage 23601," holotype S!* 20-3630 m; Yukon east to Gaspe, and sonth to Flowering June, July. Often on gravel hars, Oregon, Nevada, central and northern Utah, but also on spits, beaches, and less commonly Colorado, and western South Dakota. on ridge crests in mixed tundra, from near sea The var. ahorigino1"um consists ofthe aggre level to 350 m, from coastal western Alaska, gation ofvariants distributed in the mountains along the northern and southern slopes of the and valleys from northern British Columbia Brooks Range, south to near the 65th parallel, southward, exclusive of the isolated var. cot and east to the ranges of northern Yukon and toni. Separation of the "linearis" phase in the continental and insular Northwest Territories, Yukon from the northernmost outliers of var. Canada. ahoriginorurn is rather tenuous. However, most Plants from northern Alaska, Yukon, and of var. muriei (including the linearis phase) Northwest Territories are variable also but have petiolate leaves, at least at the lower seem to revolve about a group of plants from nodes. And the great body of specimens sonth sand hars, spits, and beaches with overall along the cordillera have sessile leaves, bnt larger flowers and broader pods. Well-devel include a great many variable specimens, oped, large~floweredcollections from the Cov often growing intermixed within the same ille River at Umiat were sufficiently distinc populations. Further segregation seems futile tive that Hulten (1950:1761) compared them at present. with A. harringtonii (Rydberg) Hnlten of the It is unfortunate that the synonymy, already rohbinsii complex. Even those large-flowered overcrowded, should have yet another name. specimens are part ofa continuum, with small Insistence on priority of autonyms in recent flowered plants forming the other extreme, codes of botanical nomenclature has led to especially in coastal western Alaska. In north such clutter. In this case the earliest autonym ern Yukon the large-flowered material is tran available for the geographically most extensive sitional with smaller flowered plants assigned American variety is "aboriginorum." Barneby herein to var. muriei. (1964, et subsequent) cited the name as "abo riginum" but later used the suffix -orum for Astragalus australis var. aboriginorum taxa named by him. (Richardson) Welsh, comb. nov. [based on autonym of: A. aborigin[or]um vmJ{/,\·tigiomm Astragalm australis var. cottoni (M.E. Jones) M.E. Jones, Rev. Astrag. 135. 1923. i.e., A. aboriginarum Welsh, comb. nov. Cotton's milkvetch. Richardson in Franklin, Jour., Append. 746. 1822; Phaca [A. cattani M.E. Jones, Rev. Astrag. 135. 1923, nom. glahduscula Hooker, Fl. Bar. Amer. 1:144. 1831; A. nov. pro: A. alympicus Cotton, Bull. Torrey Bot. Club glahriusculus var. major A. Gray, Proc. Acad. NaL Sci. 29:573. 1902, non A. olympicus Pallas, 1800; A. aus Philadelphia 1863:60. 1863; A. australis var. glahrius tralis var. alympic!ls (Cotton) Isely, Syst. Bot. 8:421. culus (Hooker) Isely, Syst. Bot. 8:421. 1983; A. for 1983, nom. illeg.; Atelophragma cattoni (M.E. Jones) woodii S. Watson; A. riclUJrdsonii Sheldon; AteloTJhmg Rydbe,-gJ. ma wallowense Rydberg; Atelophragma herriatii Ryd Stems 1-1.7 dm long, decumbent to berg; Astragalus scruTJulicola Fernald & Weatherby1. ascending. Leaves (1.5) 2-5.5 em long; leaflets Stems 10-50 em long, ascending. Leaves sessile, 1-7 (10) cm long; leaflets 5-15, 3-27 9-15 (17), 4-16 mm long, linear-elliptic to (35) mm long, linear to oblong, lanceolate, or elliptic-oblanceolate, acute to subacute, villo elliptical, aeute to obtuse, glabrous to strigose sulous or glabrate above. Peduncles 3-6.5 em or villous. Peduncles 6.5-15 em long, typically long, typically equaling or somewhat longer longer than the leaf. Racemes rather densely than the leaf. Racemes rather densely 11- to 6- to 40-flowered, the axis 1.5-15 em long in 21-flowered, the axis 2-6 em long in frnit. frnit. Flowers 7-12.5 mm long, whitish to pur Flowers 10-12.2 mm long, creamy white. Pod plish. Pod stipe 2.5-8 mm long, the body ob stipe 3-5 mm long, the body semi-ellipsoid, liquely ellipsoid to narrowly oblong, 10-30 mm hladdery inflated, 20-25 mm long, 7-9 (11) long, 3-7 mm wide, the valves glabrous to mm thick, the valves glabrous. Ovules 10-15. occasionally strigose. Ovules 8-16. *Type: "Val *Type: "Olympic Mts., Clallam County, July, lies of the Rocky Mountains," Drnmmond, 1900, A.D.E. Elmer'"; holotype WS; isotypes holotype K. * NY!, ORE, P, US!. * Flowering May to July. Gravel bars, stony Flowering June, July. Ridge tops and talus, shores, talus, ridge crests, and meadows, grow on granite at 1380-1680 m in the Olympic ing with an immense array of plant species Mts., Clallam Co., Washington. 1998] ASTRAGALUS NOME'ICLATURE 49
This is the most distinctive of the variants prostrate, radiating from the root crown; plants within the australis complex in North Amer ofGarfield, Kane, Iron, and eastern Washing ton counties, Utah, and Lincoln Co., Nevada ica, hence its recognition previously at specific ...... var. sileranus level. It is isolated by many kilometers from 2. Pods ovoid or ovoid-ellipsoid, hladdery inflated, other taxa in the complex. less than twice as long as broad; stems ascending or less commonly prostrate; plants Astragalus subcinereus A. Gray, Proe. ArneI'. of Coconino and Mohave counties, Arizona, and Lincoln Co., northern Nevada . Acad. 13:366. 1878. Siler's milkvetch. . var. subcinereus Low. caulescent perennial, 14-90 cm long, 1. Mature pods elliptic-oblong to oblong, 3.5-6 (7) radiating from a subterranean, branching mm wide; flowers 8.5-11 mm long; stems 40-90 caudex. Pubescence villosulous or hirsutulous. em long; plants of igneous gravels in eastern Sevier and western Emery counties, Utah . basifixed. Stems few to several, prostrate to ...... var. basalticus weakly ascending, buried for a space of (1) 2-10 (15) cm. Stipules 1.5-6.5 mm long, at Astragalus subcinereus var. subcinereus least some connate-sheathing. Leaves 1.5-8.5 Plants with stems to 5 dm long or less, with cm long; leaflets 9-23, 2-16 mm long, 1-8.5 mature pods relatively broad, mainly 6-13 mm (10) mm wide, oblong to oblanceolate or obo wide, and othen¥ise differing as in the key. vate, obtuse, emarginate, or retuse, villosulous *Type: "Mokiak Pass in the northwestern part on both surfaces or glabrate above. Peduncles of Arizona, near the Utah boundary, Dr. E. 1.5-10 cm long; racemes 5- to 37-flowered, Palmer, 1877," holotype GH!; isotypes K, MO, the flowers ascending to declined at anthesis, NY!, PH, US!* the axis 1-7 cm long in fruit; bracts 1--3 mm Ponderosa pine, pinyon-juniper, and sage long; pedicels 0.5-2.5 mm long; bracteoles brush communities at 1670-2410 m, in 0-1. Calyx 3.4--6.3 mm long, the tube 2.3-3.6 Garfield, Iron, Kane, and Washington coun mm long, campanulate, villosulous, the teeth ties, Utah; Lincoln Co., Nevada; and Mohave 0.9-2.9 mm long, subulate. Flowers 6-11 mm and Coconino counties, Arizona. long, ochroleucous and commonly suffused with purple. Pods spreading to declined, sub Ast1'agalus subcinereus var. sileranus (M.E. sessile, inflated, ovoid-ellipsoid to ellipsoid, Jones) Welsh, comb. nov. Siler's milkvetch. 12-27 mm long, (3.5) 6-13 mm wide (when [based on the autonym of A. sileranus var. cariacu.s pressed), subterete to dorsoventrally com M.E. Jones, Proc. Calif. Acad. Sci. II. 5:642. 1895; A pressed, thinly villosulous, mottled. Ovules sileranus M.E. Jones, Zoe 2:242. 1891; Phaca silerana (M.E. Jane,) Rydbe,gj. 10-20. Plants prostrate, radiating from a root Much of the material from Kane, Garfield, crown, with stems to 6 dm long, often conspic and Washington counties, Utah, differs from uously flexuous. Pods ellipsoid, mostly more the typical plants in Mohave Co., Arizona, in than twice longer than broad (or ifshorter, less being more leafY (the leaflets 4-10 mm broad), than 7 mm wide and the texture leathery). in having longer stems (3-7 dm long), and in *Type: "Collected by me [M.E. Jones] on June having more firmly walled pods (15-28 mm 23, 1890, in Sink Valley, southern Utah, at long, and 6-10 [13] mm thick). These Utah abnut 7000 feet altitude," holotype POM!, iso plants belong, sens. str., to val'. caraicus M.E. types CAS!, GH!, MO, NY!, US!* Jones (Le., the autonym var. sileranus). Flowering May, June. Ponderosa pine, Although the features are weak and overlap aspen, oak, pinyon-juniper, and mixed moun ping, they form a syndrome of characteristics tain brush communities at 1700-2750 m, in indicative of an evolutionary trend and are Garfield, western Kane, eastern vVashington, herein treated at varietal level, bringing to 3 and Iron counties, Utah; and Lincoln Co., the number oftaxa within the species. Nevada. 1. Mature pods ovoid-ellipsoid, (5) 6-13 mm wide; flowers 5-9 mm long; stems mostly 14-70 em Astragalus subcinereus var. basalticus Welsh, long; plants commonly of sedimentary gravels, Great Basin Naturalist 38:302. 1978. Basalt sometimes from igneous substrates, southern milkvetch. Utah and northern Arizona. Plants with stems to 8 dm long, with mature 2. Pods ellipsoid, turgid, but not bladdery inflated, more than twice as long as broad (or pods narrow, mainly 3.5-6 (7) mm wide, and if shorter, then differing otherwise; stems otherwise differing as in the key. *Type: "Utah, 50 GREAT BASIN NATURALIST [Volume 58
Sevier Co., 16 km S of Fremont Junction, S.L. lous, obscurely stipitate, the stipe ca 0.4 mm Welsh, D. [sely, & G. Moore 6447, 23 July long, concealed by the calyx, the body ellip 1967," holotype BRY!, isotype ISC!* soid or lance-ellipsoid, 6-9 mm long, (2.5) Flowering May, June. Pinyon-juniper ,md 3-3.3 mm thick, obcompressed, the valves ponderosa pine communities at 1380--2430 m white-villosulous, almost or quite 2-10culed, in western Emery and eastern Sevier coun the septum 0.8-1.3 mm wide. Ovules 4-6. ties, Utah. *Type: "Colorado: ... four miles west of Gun Specimens ofvar, basalticus grow sympatri nison, Gunnison Co., ... 20 July 1945, fl. & fl., cally with A. flexuosus var. diehlii (M.E. Jones) Ripley & Barneby No. 7179"; holotype CAS!; Barneby. When material of the latter variety is isotypes COLO, GHi, RSA. * robust, it approaches var, basalticus in habit, Flowering ] uly, August. Dry, sandy and but not in pod and flower size. Indicated, how gravelly sites in sagebrush, at 2310--2640 m, in ever, is a close alignment between the 2 taxa, hills west and southwest of Gunnison, Col and var. basalticus might possibly be treated orado. within an expanded A. jlexuosus var, diehlii or Despite conjecture that the skiff milkvetch within A. suhcinere1Js. The more robust nature might represent a recent introduction from of var. basalticus precludes alignment with A. unknown source, its ecological placement is fiexuosus, however. not unlike that of numerous other species of Astragalus. There is no reason to believe that Astragalus sect. Scytocarpi subsect. it is other than indigenous and endemic. It has Microcymbi Welsh, subsect. nov. been relocated numerous times since its initial [based on: A microcymbus Barncby, Arne): MidI. Nat discovery. Previous placement within section uralist 41:489. 1949,] Strigulosi is, however, open to question, More Perennial, caulescent, with a shortly sub apparently it belongs within the Scytocarpi, terranean caudcx. Pubescence basifixed. Stip near A. gracilis. ules dimorphic, at least the lowermost con nate-sheathing. Leaves with 9-15 oblong-obo Astragalus tegetarioides M.E. Jones, Contr. vate or ohovate-cuneate, emarginate, folded W Bot. 10:66. 1902. Bastard kentrophyta. leaflets. Racemes looscly (3) 7- to 14-f1owered. Prostrate, caulescent perennial, fomling mats Calyx 2.2-2.6 mm long, the tube 1.4-Ul mm or cushions 1-3 (4) dm wide, radiating from a long, the teeth 0.5-0.7 mm long. Flowers branching caudex. Pubescence strigose or thin 5.6-5.8 em long. Pods 6-9 mm long, obscurely ly villosulous, basifixed. Stems 5-15 em long stipitate, almost or quite bilocular. Ovules 4--6. or more. Stipules 0.8-3 (5) mm long, at least The subsection is monotypic. the lower ones connate-sheathing. Leaves 1-4 (6) cm long; leaflets (5) 7-11, 1.5-5.5 mm Astragalus microcymbus Barneby, Amer. Mid!. (7) Nat. 41:499. 1949. Skiffmilkvetch. long, obovate-cuneate, obtuse, truncate, or Slender, diffuse, caulescent perennial, 25-60 emarginate, pubescent on both sides. Pedun em tall, from a shallowly buried eaudex. cles 0.3-2.5 em long; racemes compactly or Pubescence strigulose to subvillosulous, basi loosely (2) 3- to 6 (8)-flowered, tbe flowers fixed. Stems prostrate or weakly ascending, ultimately declined at anthesis, the axis 3-15 subterranean for a space of 1-3 em. Stipules mm long in fruit; bracts 1.2-2.7 mm long; 1.5-3 mm long, at least the lower ones connate. pedicels 0.4-1.3 mm long; bracteoles o. Calyx Leaves (1.5) 2-4 cm long, shortly petioled or (2.2) 2.6-3.7 mm long, the tube 1.1-2 mm the uppermost subsessile; leaflets 9-15, ob long, obconic-campanulate, the teeth 1-1.9 long-ovate or oblong-cuneate, 3-9 mm long, mm long, subulate. Flowers 4.4-6 (7) mm emarginate. Peduncles (0.8) 1.5-3.5 em long, long, whitish, the banner faintly lilac-veined. variously hairy; racemes loosely (3) 7- to 14 Pods spreading, sessile, the body 3.5-4.5 mm flowered, the axis (1) 2-6.5 em long in fruit. long, 1.5-4.2 mm wide, ovoid-lenticular, ob Flowers 5.6-5.8 mm long, whitish tinged with scurely trigonous, minutely strigulose to silky lilac, the banner recurved through ea 45°. villous. Ovules 2-3 (4). Calyx 2.2--2.6 mm long, the tube 1.4-1.9 mm long, campanulate or obconic-campanulate, 1. Racemes loosely 2- to 6 (B)-flowered; flowers whitish, the banner with pale lilac veins, 4.4-7 strigulosc with white and fuscous hairs, the 111m long; pods 1.5-2.8 mm wide; plants ofHarney teeth 0.5-0.7 mm long, subulate. Pods pendu- Co" Oregon val'. tegetarinides 1998] ASTRAGALUS NOMENCLATURE 51
1. Racemes compactly (7) 9- to I5-flowered; flowers 3-17 mm wide, ovate to obovate, lanceolatc, rose purple, the banner with a pale basal eye, or elliptic obtuse to rciose, strigose (along 6,5-10 (12) mm long; jX}ds 3.2-4.2 mm v.ide; plants of Lassen Co., California var. anxius veins) beneath, ciliate, glabrous above. Pedun cles (4) 9-23 cm long; racemes (15) 20- to 40 Astragalus tegetarioides var. tegetarioides flowered, the flowers ascending anthesis, the Pubescence strigose-strigulose. Leaflets axis (4) 10-16 cm long in fruit; bracts 1.5--4 7-11, 1.5-5.5 mm long. Racemes 1.3-1.8 em mm long; pedicels 0.7-3.5 mm long; bracte long, loosely 2- to 6 (8)-flowered. Calyx (2.2) oles 0-2. Calyx 5-6 mm long, the tube 4-5 2.6_3.7 mm long, the teeth 1-1.9 mm long. mm long, short-cylindric, strigose, the teeth Flowers 4.4-6 (7) mm long, the banner re 0.5-0.9 (1.2) mm long, triangular to subulate. flexed 70-1000. Pods 3.3--4.5 mm long, 1.5-2.8 Flowers (11) 14-18 mm long, ochroleucous, mm wide. *Type: "No. 2619 Cusick, southern the keel immaculate, the banner recurved through ca 25°. Pods erect, slenderly stipitate, Blue Mts., Oregon, in sandy soil in the Buck the stipe 7-15 mm long, the body ovoid to Range, June 28, 1901"; holotype POM!; iso ellipsoid, inflated, papery, 12-18 mm long, types C, CHi, K, MO, NO, NY!, ORE, P, RM, 8-10 (12) mm thick, obcompressed, glabrous, US!* essentially unilocular, the septum to ca 0.2 Dry pine forests and sagebrush communi mm wide. *Type: "Washington Co., Utah ... ties at ca 1350-1550 m in the Little Juniper ca 1 mi N hwy 91 at Shivwits, 3450 ft. elev. Mountain and upper Silvies River, in west S.L. Welsh, N.D. Atwood 21049, 21 April central and north Harney Co., Oregon. 1982," holotype BRY!* Flowering April, May. Cypsiferous sub ABtragalus tegetarioitks var. anxius (Meinke strates, in "boils" on the Chinle Formation sur & Kaye) Welsh, comb. nov. rounded hy creosote bush, other warm desert [A. anxius Meinke & Kaye, Madroi'io 39: 194. 1992}. shrubs, and juniper communities at ca 1050 Pubescence loosely villous to pilosulous. 1150 m from the Petrified Forest section of Leaflets 9-15, 4-9 mm long. Racemes 0.8-2.2 Zion National Park, west in several disjunct em long, compactly 7- to 13 (15)-flowered. populations to the type locality, Washington Calyx 3.2--4.7 (5) mm long, the teeth 1.7-2.7 Co., Utah. mm long. Flowers 6.5-10 (12) mm long, the The Shivwits milkvetch was dismissed as banner reflexed 60-80°. Pods 3.5--4.5 mm long, taxonomically inconsequential by Barneby 3.2-4.2 mm wide. *Type: "California, Lassen (1989) and by Isely (1996). However, the com Co., Ash Valley, ca 25 km west of Madeline bination of subterranean caudices, Hstulose and u.s. Hwy. 395, immediately south of Ash stems, very large number of flowers on an Valley Rd., in loose gravel overlying volcanic attenuated raceme, and papery inflated pods bedrock, on the boundary of T38N, R11E, seems to be a rather consequential grouping Sect. 32 and T37N, R11E, Sect. 5, ea 1550 m, of taxonomic features, especially in a plant 16 Jul 1991, Meinke and Lantz 6108," holo with a preference for harsh ecological sub type OSC; isotypes CAS, ISC, MO, NY, RM, strates. Diagnostic criteria are of the order of UC, US.* magnitude of those utilized elsewhere to dis Arid flats in or near juniper-sagebrush tinguish the closely related A. ensiforrnis M.E. steppe or Pinus jeffreyi woods at 1540-1660 Jones from A. rninthorniae (Rydberg) Jepson. ill, in Ash Valley, extreme north central Lassen The nature of the root crown and of the pods, Co., California. but not of the remainder of the plant, is remi niscent of the only slightly allopatric A. Astragalus ampullarioides (Welsh) Welsh ampullarius S. Watson. Plants of the Shivwits comb. nov. Shivwits milkvetch. milkvetch are routinely hedged back by deer. [A. eremitic'll.',' var. ampullarioides Welsh, Great Basin Often the entire inflorescence is consumed. Naturalist 46:262. 1986]. Moderate, caulescent perennial, 20-63 em Astragalus cutleri (Barneby) Welsh, comb. tall, from a branching subterranean caudex. nov. Cutler's milkvetch. Pubescence thinly strigulose, basifixed. Stems [A. preussii var. cutleri Barnehy, Great Basin Naturalist decumbent to erect, buried for a space of2-10 46,256. 1986J. em. Stipules 3-9 mm long, all distinct. Leaves Moderate, caulescent, short-lived peren 5-22 cm long; leaflets 13-21, 4-24 mm long, nial, often flowering as an annual, 10-30 (35) 52 GREAT BASIN NATUHALIST [Volume 58 em tall, from a superficial caudex. Pubescence to glabrous on both sides. Peduncles 3.5-7 cm sparingly strigulose to subglabrous, basifixed. long; racemes 4- to 10-flowered, the flowers Stems few to several, ascending to erect, ascending-spreading at anthesis, the axis 0.5-2 forming bushy clumps. Stipules 2-6.5 mm em long in fruit; bracts 2-6 mm long; pedicels long, all distinct. Leaves 3-13 cm long; leaflets 2-5 mm long; bracteoles 0-2. Calyx 15-17.5 5-17 (19), 3-17 (20) mm long, (3) 5-12 mm mm long, the tube 11.5-14 mm long, cylin broad, clliptic to lanceolate, oblanceolate or dric, strigulose, the teeth 3-4 mm long, subu ohovate, acute to obtuse or mucronulate, late. Flowers (23) 27-34 mm long, ochroleu strigulose to glabrous below, glabrous above. cous, fading yellowish or white fading off Peduncles 2.5-10 cm long; bracts 1.5-2.5 mm white. Pods spreading to declined, subsessile, long; racemes 5- to 9-flowercd; pedicels inflated, cylindroid, 20-48 mm long, 10-15 1.5-2.5 mm long; bracteoles 2. Calyx (7.3) mm thick, stiffly papery to leathery, strigose, 7.5-8.5 (9) mm long, the tube 5.9-6.7 long, unilocular. Ovules 55--59; 2n = 26. cylindric, pale purple or whitish, sparsely black strigose, the teeth 1.3-1.7 (2.3) mm long, sub 1. Flowers 27-34 mm long, ochroleucous, fading yellowish; plants of the Cisco-Thompson vicinity ulate. Flowers 15-16 mm long, white or tinged ...... var. sabulosus (or drying) purplish, the banncr recurved 1. Flowers 23-27 mm long, white, fading off-white; through ea 40-45°. Pods ascending to erect, plants from northwest of Moab . stipitate, the stipe 3-3.5 mm long, the inflated ...... var. vehiculus body oblong-ellipsoid, 14-18 mm long, 9-11 mm thick, the valves thinly cartilaginous, Astragalus sabul<>sus var. sabuloSWI grcenish suffused (sometimes) with purple, [Jonesiella sabuI.osa (M.E. Jones) Rydberg]. Calyx 15-17.5 mm long, the tube 11.5-14 unilocular, glabrons. Ovules 20-38. *Type: mm long, cylindric, strigulose, tl,e teeth 3-4 "Cutler 2283, Copper Canyon, 1 mi from mm long, subulate. Flowers 27-34 mm long, mouth, San Juau Co., Utah," holotype NY!, ochroleucous, fading yellowish. Pods spread isotypes CAS!, WIS. * ing to declined, subsessile, inflated, cylin Flowcring April, May. Saltbush and black droid, 20-48 mm long, 10-15 mm thick, leath brush communities, on Permian formations, at ery. *Type: "Collected [by M.E. Jones] May 2, ca 1155-1250 m, at Copper Canyon south of 1890, at Cisco, Utah, on gravelly soil near San Juan Arm of Lake Powell, San Joan Co., Grand River"; holotype POM!* Utah. Flowering late March to May. Mat-atriplex This taxon, when first characterized, was shadscale communities at 1300-1600 m on known only from plants flowering as annuals. Mancos Shale (and Morrison Formation?) in Later collections demonstrate that the plant is the Grand River Valley, vicinity of Tbompson at least a short-lived perennial. The other and Cisco, Grand Co., Utah. characters hold, however, even if there is morc The very large, pale ochroleucous flowers overlap in leaflet number than previously are borne in late March through April and by known. Also, the pods are of thin texture, mid-May the plants bear large sausagelike approaching A. eastwoodiae more so than A. fruits. The Cisco milkvetch is a primary sele preussii, with which it shares features of nium indicator with close affinities to both var. ascending-erect pods. Cutler's milkvetch dif~ vehiculus and A. iselyi Welsh (q.v.), from both fers from A. preussii in about the same order of which it can be distinguished by its ochro ofmagnitude as does A. eastwoodiae. leueous flowers that fade yellow (Welsh 1994). The flowers of A. SahUI<>SWI Val: sahulosus are Astragalus sabul<>SWI M.E. Jones, Zoe 2: 239. the largest within Astragalus in Utah, and pos 1891. Cisco milkvetch. sibly elsewhere (though tlley are not the Hobust, ill-scented, caulcscent perennial, longest). Understanding of diversity within 13--38 cm tall, from a woody supcrficial caudex. the sabulosus complex was long held in abey Pubescence strigulose, basifixed. Stems decum ance because of paucity of flowering speci bent to ascending or erect, several to numerous, mens in herbaria. Those that were collected forming clumps. Stipules 4-9 mm long, all were taken in fruiting condition. Floral fea distinct. Leaves 3-10.5 cm long; leaflets 5-11, tures readily allow segregation of the known 6--35 (50) mm long, 3-17 mm wide, l'hombic populations into 3 taxa, A. isely, A. sahul<>sus oval to obovate or elliptic, mucronate, strigose var. sahulosus, and A. sahul<>sus var. vehiculus. 1998] ASTRAGALUS NOMENCLATURE 53
Astragalus sabulosus var. vehiculus Welsh, spreading-ascending, the axis 3-15 cm long in var. nov. fruit; bracts 2-5 mm long; pedicels 1-2.5 mm Similis var. sabulosi sed in floribus minor long. Calyx 10-11.5 mm long, the tube 8.5-10 ibus (2-27 nee 27-34 mm) et albidis (nec mm long, cylindric, strigulose, the teeth 1-2 ocbroleucis) decolore albidis (nee flavis) et mm long. Flowers 19-27 mm long, pink-pur leguminibus substipitatis incipientibus. *Type: ple, fading or drying ochroleucous. Pods Utah, Grand Co., T24S, R20E, Sec 7, ca 16 mi ascending (bumistrate), sessile, the body due NW of Moab, ca 4500 ft. elev. Morrison 15-25 (27) mm long, 7-15 mm thick (when Formation, mixed salt desert shrub comm., 28 pressed), turgidly lance-ovoid, contracted dis Apr 1984, S.L. Welsh 22709, holotype BRY!, 3 tally into an incurved, laterally compressed isotypes distributed previously as Astragalus beak 5-8 mm long, fleshy, the valves ca 2 mm sabulosus. * Additional specimens (all BRY!): thick, shrinking in ripening, green or purplish, Utah, Grand Co., ca 1 km SSE ofhistoric state but not mottled, strigulose, unilocular. Ovules station and 20 km NW of Moab, at ca 1464 m ca 38. *Type: M.E. Jones, "No. 56581. July 21, elev., 30 April 1984, S.L. Welsh & D. Trotter 1894, at Cottrell's Ranch, Henry Mountains, 22723 (fl.); do, 20 May 1985, S.L. Welsh 23432 Utah, 6000' alt.," holotype POMI* (fr.); do, 21 May 1984, Atwood, Goodrich, and Salt desert shrub, Bigelow sagebrush, and Thompson 9700; do, T24S, R20E, S16 SESW, juniper communities, at 1460-1890 m, in ca 1.8 miles N of Courthouse Rock, 16 June western Wayne and western Garfield counties 1995, D. Atwood 20276. (Henry Mts. and vicinity), Utah. Calyx 12-16 mm long, the tube 11-13 mm The laccolite milkvetch is easily distin long, cylindric, black strigulose, the teeth 2-3.5 guished from A. chamaeleuce A. Gray by its mm long, subulate. Flowers 23-27 mm long, lance-ovoid (not ellipsoid, purple-mottled white, fading whitish. Pods spreading to de pods). The taxon has been confused with the clined, subsessile to incipiently substipitate, nearby A. consobtinus (Barneby) Welsh, with inflated, cylindroid, 28-45 mm long, 9-13 mm which it shares structurally similar but much thick, stiffly leathery, larger pods and flowers, and has been treated Shadscale, woody-aster, galleta community previously as a variety of A. chamaeleuce, on the Morrison Formation at 1370-1465 m whose distribution is adjacent to but not con near the head of Courthouse Wash, Grand fluent with that ofthis plant. Its morphological Co., Utah. differences are similar to those regarded as Plants of var. vehiculus, the stage station diagnostic in other taxa within the Argophylli. milkvetch, approach A. iselyi in flower color but have much larger flowers. They are geo LITERATURE CITED graphically disjunct, by more than 35 km from A. iselyi and about that distance from the BARNEBY, RC. 1964. Atlas of North American Astragalus. nearest known population of var. sabulosus. Memoirs of the New York Botanical Garden 13: 1-1188. The sabulosus complex is also allied with A. . 1989. Fabales. Pages 1-279 in A. Cronquist et al., praelongus Sheldon, which has much smaller ----;clntermountain flora 3B. New York Botanical Garden, flowers and pods. Bronx, NY. HULTEN, E. 1950. Flora of Alas&1. and Yukon. X. Dicotyle (M.E. Jones) Welsb, doneae. Lunds Univ. Arssk. N.F Avd. 2. 46(1): Alltragalus laccoliticus 1485--1992. comb. nov. Laccolite milkvetch. ISELY, Do 1996. Native and naturalized Leguminosae [A. cicadae var. laccoliticus M.E. Jones, Proc. Calif. (Fabaceae) of the United States. Unpublished manu Acad. Sci. II. 5:672. 1895J. script. Iowa State University, Ames. 1000+ pp. Perennial, acaulescent, 4-8 cm tall, from a KOROBKOV, A.A., M.V: SOKOLLOVA, N.N. TARAS KINA, AND taproot and superficial caudex. Pubescence B.A. JURTSEV. 1986. Leguminosae. Flora Arctica dolabriform. Stems obsolete or essentially so, URSS 9(2P-187. WELSH, S.L. 1994. Leguminosae. In: S.L. Welsh et al., A the internodes obscured by stipules. Stipules Utah flora. 2nd edition. Brigham Young University, 2-5 mm long, all distinct. Leaves 2-9 cm long; Provo, UT. leaflets (5) 9-11, (4.5) 5-11 mm long, 3.5-6.5 mm wide, oblanceolate to obovate, obtuse, Received 17 April 1997 strigose on both sides. Peduncles 1.3-6 cm Accepted 29 May 1997 long; racemes 3- to 8-flowered, the flowers