Great Basin Naturalist Volume 48 Number 3 Article 14 7-31-1988 Checklist of the mosses of the Intermountain West, USA John R. Spence University of Colorado, Nederland, Colorado Follow this and additional works at: https://scholarsarchive.byu.edu/gbn Recommended Citation Spence, John R. (1988) "Checklist of the mosses of the Intermountain West, USA," Great Basin Naturalist: Vol. 48 : No. 3 , Article 14. Available at: https://scholarsarchive.byu.edu/gbn/vol48/iss3/14 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]. CHECKLIST OF THE MOSSES OF THE INTERMOUNTAIN WEST, USA John R. Spence' Abstract —A revised list of the mosses of the Intermountain West, including all of Utah and Nevada and parts of surrounding states, is presented. Recorded are 342 species in 122 genera and 39 families in this region. Nomenclatural and taxonomic changes as well as floristic additions since the publication of Seville Flowers s book are included. In a recent survey of the floristic literature Wasatch Plateau. Recent work on the vascular of North America, Schofield and Miller (1982) flora provides support for the integrity of this indicated the following regions as being the region (McLaughlin 1986). Two small, dis- least known bryologically: the Southwest, parate elements are included: Uinta Moun- Rocky Mountains, Great Plains, and Arctic tains and a small portion of the Mojave Desert and boreal North America. Although not in southwestern Utah and southern Nevada. specifically indicated, the Intermountain Re- The inclusion of the Mojave Desert portions gion of the western United States, consisting of Utah and Nevada provides essentially com- primarily of Utah and Nevada, is part of both plete floras for these states, and adds only a the Southwest and the Rocky Mountain re- few Mojavean taxa, e.g., Entostodon holan- gions. deri, Jaffueliobryiim wrightii, Pleurochaete This paper begins a series on the bryophyte sqiiarrosa, and Splachnobnjum ohtusum. flora of the Intermountain West (sensu Cron- The bryophyte flora of the region has been quist et al. 1972), which includes the states of summarized by Lawton (1958, 1971), Clark Utah and Nevada as well as portions of Ore- (1957), Haring (1961), and Flowers (1961, gon, Idaho, Wyoming, and Arizona. The 1973). A wide variety of shorter reports (see boundaries are similar to those used in the below) also exists, while Behle (1984) lists Intermountain Flora Project (Cronquist et al. Flowers s many papers. As yet no attempt has 1972 and subsequent volumes) and largely for been made to compile a bryophyte flora for the same reasons. The main difference is that I the Intermountain West, as is being done for have included all of Nevada and the Colorado the vascular plants (Cronquist et al. 1972 and Plateau portion of northern Arizona (Fig. 1). subse(juent volumes). This region is almost identical to the Great Although state checklists that include por- Basin Province of Gleason and Cronquist tions of the Intermountain West (e.g., Mc- (1964). Western Colorado is floristically simi- Cleary and Green 1971) exist, this paper is the lar to eastern Utah (Weber 1973), with the first to bring together information on the floristic change to the southern Rocky Moun- mosses of the entire area as a checklist. Future tains almost impossible to delimit. Hence an work will include the hepatics. The main aims indefinite fringe of eastern Colorado and adja- of this paper are to provide a list and to update cent New Mexico is included. classification and nomenclatiue of species. The Intermountain West is highly diverse Major sources for the list include: Utah (Flow- in landforms, geology, climate, and vegeta- ers 1973), Nevada (Lawton 1958, 1971, Lavin tion. In the south is found the hot and arid 1981, 1982), and Arizona (Haring 1961, John- Mojave Desert, while northward stretch son and Vitt 1971, Vitt et al. 1971). Included semiarid shrub steppe, pygmy conifer wood- in these papers are many additional refer- lands, montane forests, and alpine tundra. ences. Many additional species probably Four natural physiographic provinces com- remain to be discovered, especially in the prise the Intermountain West: Snake River Pottiaceae (cf Spence 1987). Some areas, es- Plain, Great Basin, Colorado Plateau, and pecially southeastern Oregon, the Colorado Mountain Research .Station, University of Colorado. Nedcrland, Colorado S()4fi(i Present address: Dei)artnient of Plant aiid Microbial Sciences. Universit>' of Canterbury, Christchurch 1, New Zealand. 394 July 1988 Spence: Checklistof Mosses 395 Ambystegiaceae in part (Kanda 1975, 1976), Grimmiaceae (Churchill 1981), Mniaceae (Koponen 1968, 1973), Polytrichaceae (Smith 1971), Plagiotheciaceae (Buck and Ireland 1985), and Scouleriaceae (Churchill 1985). Genera are arranged alphabetically, with family position given in parentheses. Taxo- nomic categories below the rank of species are not listed. The bibliographic sources are des- ignated by numbers after each name. For some species ofBryum, specimens from UBC are used for documentation. More details on Bryum can be found in Spence (1988). Abietinella C. Muell. (Thuidiaceae) A. abietina (Hedw.) Fleisch., 15, 17. Aloina Kindb. (Pottiaceae) A. bifronsiDe Not.) Delg., 13, 15. Amblijstegium B.S.G. (Amblystegiaceae) A.^urtaft/f (Hedw.)B,S.G., 15, 17. A. rtparium (Hedw.) B.S.G., 15, 17. A. sfrpens (Hedw.) B.S.G. , 15, 17,29. A. f^na.r(Hedw.)C. Jens., 15, 17, 29. A. trichopodium (Schultz) Hartm. (Corley et al. 1981 suggest that the correct name is A. humile), 15, 17, 29. A. tiflrium (Hedw.) Lindb., 15, 17. Amphidium Schimp. (Rhabdoweisiaceae) Fig. 1. The approximate boundaries of the study area A. lapponicum (Hedw.) Schimp., 15, 29. are outUned in black. Included are all of Utah and Ne- AnacoUa Schimp. (Bartramiaceae) vada, northern Arizona to the Mogollon Rim, and parts of A. menziesii (Turn.) Par., 15, 27. Oregon, Idaho, and Wyoming. Andreaea Hedw. (Andreaeaceae) A. rupestris Hedw., 17. Anomodon Hook. &Tayl. (Anomodontaceae) Plateau, and the Uinta Mountains, are still A. attemtatiis (Hedw.) Hueb., 17. poorly known. A. rosfrafws (Hedw.) Schimp., 17. Recent monographs have drastically Antitrichia Brid. (Leucodontaceae) A. californica SuU. ex Lesq., 29. changed the taxonomy and nomenclature of Atrichum P. Beauv. (Polytrichaceae) many groups. I have followed the opinions A. sehvijnii Aust., 15. of workers who have specialized in particular A. undulatinn (Hedw.) P. Beauv., 17. groups: Aloina (Delgadillo 1975), Amblyste- Aidacomnium Schwaegr. (Aulacomniaceae) A. androgynum (Hedw.) Schwaegr., 29. gium (Crum and Anderson 1981), Barbida 15, A. pahistre (Hedw.) Schwaegr., 15, 17, 29. (Zander 1979), Bryiim (Spence 1988), Cros- Barbida Hedw. (Pottiaceae) sidium (Delgadillo 1975), Dicranum (Peter- B. convohita Hedw., 15. son 1979), Didymodon (Zander 1978), Enca- B. ehrenbergii (Lor.) F\eisch., 15, 17. lypta (Horton 1983), Hygrohypnum (Jamie- B. eiistegia Cdrd. & Ther. , 15. B. indica (Hook.) Spreng. , 15, 49. son 1976), LeskeeUa and Pseudoleskeella B. unguiculata Hedw., 15, 17. (Lewinsky 1974), Orthodicranum (Peterson Bartramia Hedw. (Bartramiaceae) 1979), Orthotrichum (Vitt 1973), Pohlia (Shaw B. ithyphyUa Brid., 15,27. 1982), Pseudocrossidium (Zander 1979), Brachythecium B.S.G. (Brachytheciaceae) B. flCKminflfum (Hedw.) Aust., 17. Schistiditim (Bremer 1980a, 1980b, 1981), B. fl/fcicans (Hedw.) B.S.G., 15. and Weissia (Stoneburner 1985). B. asperrimum (Mitt.) Sull., 15, 17. At the family level I have used the classifica- B. campe.streiC. Muell.) B.S.G., 15. tion of Vitt (1984) and Buck and Vitt (1986), B. co//tm«n (Schleich. exC. Muell.) B.S.G., 15, 17, 29. except for the Leskeaceae and Thuidiaceae, B. delicatidtim Flow., 15. B. digastrum C. Muell. & Kindb. ex Macoun & where I have used the traditional generic Kindb., 15. concepts (Spence unpublished manuscript). B. erythrorrhizon B.S.G., 15, 17. For other families the following are used: B.fendleri (Sull.) Jaeg. & Sauerb., 15, 29. 396 Great Basin Naturalist Vol. 48, No. 3 B.frigidumiC. Muell.) Besch., 15, 17, 29. C. decipiens (De Not.) Loeske, 15. B. leibergii Grout, 29. C.fUicinum (Hedw.) Spruce, 15, 17, 29. B. nelsonii Grout, 1.5, 17, 29. Crossidiiim ]ur. (Pottiaceae) B. oxycladon (Brid.) ]aeg. &Sauerb., 15. C. aberrans Holz. & Bartr., 13, 15, 17, 27. 17. B. plumosum (Hedw .) B.S.G., 17. C. cra.s.sJncrie(DeNot.)Jur., 13, 15, B. rivulare B.S.G., 15, 17,29. C. squamiferum (Vir.) ]\iT. , 13, 15. B. rutahulum {Hedw.)B.S.G., 29. Crumia Schof. (Pottiaceae) B. salebrosum (Web. & Mohr) B.S.G., 15, 17. C. latifolia (Kindb.) Schof., 15, 29. B. sfar)cd(Brid.)B.S.G., 15. Desmatodon Brid. (Pottiaceae) B. velutimim {Hedw.)B.S.G., 17. D. cernw«.s (Hueb. ) B. & S., 15, 17, 29. Bryoerythrophylhnn Chen (Pottiaceae) D. conDo/ufu.s (Brid.) Grout, 15, 17. B. recurvirostrum (Hedw.) Chen, 15, 17, 29. D. glacialis Funck ex Brid., 15, 29. Bryohaplocladiuin Wats. & Iwat. (Thuidiaceae) D. /aft/o/n«(Hedw.) Brid., 15, 29. B. microphylhim (Hedw.) Wats. & Iwat., 17. D. laureriiK.F. Schultz) B. &S., 15. Bryoxiphium Mitt. (Brvoxiphiaceae) D. oi>/n.si/o/iu.s' (Schwaegr.) Schimp., 15, 17. B. norvegicum (Erid.) Mitt., .3.5. D. plinthobius Sull. & Lesq. ex Sull., 15. Brtjum Hedw. (Bryaceae) Dichelyrna Myr. (Fontinalaceae) B. algovicum Sendin. exC. Muell., 15, 29. D. falcatum (Hedw.) Myr., 15. B. ambhjodonC. Muell., 15, 29. Dichodontitnn Schimp. (Dicranaceae) B. arcticuvi (R. Brown) B.S.G., 15. D. pellucidum (Hedw.) Schimp., 15. B. argenteum Hedw., 15, 17, 29. Dicranella (C. Muell.) Schimp. (Dicranaceae) B. caespiticium Hedw., 15, 17, 29. D. schreberiana (Hedw.) Dix., 15. B. capillare Hedw., 15, 17, 29. Dicranodontitim B.S.G. (Dicranaceae) B. cyclophyUum (Schwaegr.) B. & S., 15, 17. D. denudatum (Britt.) Britt., 17. B. dichotomtim Dicks., 15. Dicranoweisia Lindb. ex Milde (Dicranaceae) B.flaccidum Brid, 41, UBC! D. cirrhata (Hedw.) Lindb.