Emerald Chapter, NPSO, Rare and Endangered Vascular Plant List Lane Co., Oregon – April 2012 Scientific Name Federal State ORBIC EmChap Ecoregion Threat/Comment Common Name Status Status List List Abronia latifolia Eschsch. European beachgrass competition; 4 B CZ yellow sandverbena ORV activity Abronia umbellata Lam. ssp. breviflora Sensitive habitat; last reported in the SOC LE 1 A CZ (Standl.) Munz 1970s pink sandverbena Ageratina occidentalis (Hook.) R.M. King & H. Rare in Lane Co. C WC Rob. western eupatorium; western boneset Agrostis densiflora Vasey Known from one historic site in Lane C CZ coastal bluff bentgrass; California bentgrass C Co. Amelanchier alnifolia (Nutt.) Nutt. ex M. Var. alnifolia from east of Cascades; C WC Roem. var. alnifolia one historic collection in Lane Co. Saskatoon serviceberry from barely over the crest; need to relocate; taxonomic questions about varieties Apocynum cannabinum L. var. glaberrimum A. Infrequently seen in Lane Co.; in B WV DC. protected and unprotected sites near hemp dogbane argiculture Apocynum sibiricum Jacq. var. salignum Road and RR maintenance B WV (Greene) Fernald clasping leaved dogbane Aristida oligantha Michx. Sensitive habitat; park and wetland B WV prairie threeawn; few flowered aristida na management; exotic invasives encroachment Arnica nevadensis A. Gray Rare; no known threats C WC, HC Sierra arnica Artemisia tridentata Nutt. ssp. vaseyana (Rydb.) Last seen 40 years ago from one Lane C WC Beetle Co. location; need to relocate mountain big sagebrush Asarum marmoratum Piper Known from only one historic record C WC marbled wild ginger Asarum wagneri K.L. Lu & Mesler Four Lane Co. sites; forest C 4 A WC green flowered wild ginger management Asclepias cordifolia (Benth.) Jeps. Forest succession; shade B WC purple milkweed encroachment Asclepias fascicularis Duchesne Loss of habitat; land use B WV narrowleaf milkweed Asplenium trichomanes L. ssp. trichomanes Rare in Lane Co. C CR, WC maidenhair spleenwort Page 1 Scientific Name Federal State ORBIC EmChap Ecoregion Threat/Comment Common Name Status Status List List Astragalus purshii Douglas ex Hook. var. Known from only one historic record C WC lagopinus (Rydb.) Barneby in Lane Co.; an east of Cascades Pursh’s milkvetch species, barely coming over the crest Astragalus umbraticus E. Sheld. Populations have declined because of 4 C WC woodland milkvetch fire suppression; woody plant and shade encroachment Athyrium alpestre (Hoppe) Clairv. var. Rare high elevation species C HC americanum Butters American alpine lady fern Atriplex dioica Raf. Known from one historic collection C CZ thick leaf orach in Lane Co. Atriplex gmelinii C.A. Mey. ex Bong. var. Only two historic collections in 2 A CZ gmelinii Oregon; one in Lane Co.; need to obtuse leaf saltbush relocate Azolla mexicana C. Presl Expected to occur in Lane Co., but no C WV mosquito fern documentation. Need an electron microscope for positive ID; OFP Atlas shows several observations in Lane Co., but no verified voucher Balsamorhiza deltoidea Nutt. Woody encroachment in meadows C CR, WV, deltoid balsamroot and invasion by exotics WC Blepharipappus scaber Hook. Known from one historic record in C WV rough eyelash; blepharipappus Lane Co. Boechera howellii (S. Watson) Windham & Al- Rare high elevation species in C WC, HC Shehbaz (= Arabis platysperma A. Gray var. Lane Co.; no threats howellii (S. Watson) Jeps. in part) Howell's flatseed rockcress Botrychium minganense Vict. Expected to occur in Lane Co., but no 4 C WC gray moonwort county record; occurs nearby in Linn Co. Botrychium simplex E. Hitchc. Woody species encroachment C WC, HC little grapefern Boykinia intermedia (Piper) G.N. Jones (= Two sites in Lane Co.; need to find C CR Boykinia major A. Gray var. intermedia Piper)m more sites pyramidal boykinia Bromus pacificus Shear Several obseved sites in Lane Co.; C CZ, CR, Pacific brome need documentation WV, HC Cacaliopsis nardosmia (A. Gray) A. Gray ssp. Expected to occur in Lane Co. ; C WV glabrata (Piper) Piper known from counties north and silvercrown luina south Callitriche hermaphroditica L. Recently found in coastal lakes 3 C CZ northern water starwort Calochortus uniflorus Hook. & Arn. Loss of habitat; wetland management B WV large flowered startulip Calycadenia truncata DC. Disjunct populations; ORV B WV rosin weed; tackweed disturbance; invasives competition; agency management Calystegia soldanella (L.) R. Br. European beach grass invasion; B CZ seashore morning glory human use area Page 2 Scientific Name Federal State ORBIC EmChap Ecoregion Threat/Comment Common Name Status Status List List Campanula rotundifolia L. Two sites in Lane Co, helicopter B WC Scots harebell landing; trail maintenance; agency management Carex abrupta Mack. One historic site in Lane Co. 4 C WC abrupt beaked sedge Carex angustata Boott Few sites in Lane Co.; need more C WC Wide fruited sedge information Carex aperta Boott Few sites in Lane Co.; need more C WC, HC Columbia sedge information Carex athrostachya Olney More information needed to C WV,WC slenderbeak sedge determine status Carex brainerdii Mack. One site in Lane Co. C WC Brainerd’s sedge Carex brevicaulis Mack. Expected to occur in Lane Co., but no 2 C CZ short stemmed sedge county record Carex buxbaumii Wahlenb. Uncommon; sensitive habitat; woody C WC Buxbaum’s sedge plant invasion in wet meadows Carex californica L.H. Bailey Rare in Lane Co.; woody C CR California sedge encroachment Carex canescens L. ssp. canescens More information needed to C WC hoary sedge determine status Carex concinnoides Mack. Northern end of range C WC northwestern sedge Carex deflexa Hornem. var. boottii L.H. Bailey Known only from historic records; to C HC (= Carex brevipes W. Boott) be expected at higher elevatons as a mountain sedge look-alike of C. rossii Carex diandra Schrank Rare; only two populations in Lane 2 A WC lesser panicled sedge Co.; wilderness meadows Carex disperma Dewey Rare in Lane Co.; scattered in C WC soft leaved sedge Cascades and NE Oregon Mountains Carex echinata Murray ssp. phyllomanica (W. Habitat loss; wetland management B CZ Boott.) Reznicek prickly sedge Carex gynodynama Olney Roadside vegetation management and 4 B WC Olney’s hairy sedge; wonderwoman sedge forest management with high impacts to soil Carex hassei L.H. Bailey Industrial park redevelopment; forest B CR, WV false golden sedge succession Carex illota L.H. Bailey Uncommon in montane wet meadows C WC, HC small headed sedge Carex infirminervia Naczi (= Carex bolanderi Three sites in Lane Co.; need more 3 C WC Olney ssp. infirminervia Naczi) sites weak-veined sedge Carex integra Mack. Trampling disturbance; woody C WC, HC smooth beaked sedge species encroachment Carex interior L.H. Bailey Known from one historic site in Lane C WC inland sedge Co. Page 3 Scientific Name Federal State ORBIC EmChap Ecoregion Threat/Comment Common Name Status Status List List Carex lenticularis Michx. var. limnophila (T. Urban development; woody plant B CZ Holm) Cronquist encroachment of coastal wetlands lakeshore sedge Carex leporinella Mack. More information needed to C WC, HC Sierra hare sedge determine status Carex livida (Wahlenb.) Willd. One site in Lane Co.; woody 2 A WC pale sedge successon; changes in hydrology Carex macrocephala Willd. ex Spreng. Sensitive habitat; known only from 2 A CZ large headed sedge historic records Carex mendocinensis Olney Conifer encroachment; roadside B WC Mendocino sedge vegetation management Carex multicaulis L.H. Bailey Rare; two sites in Lane Co.; easily C WC many stemmed sedge overlooked; north end of range Carex multicostata Mack. More information needed to C WC many ribbed sedge determine status Carex nebrascensis Dewey Rare in Lane Co.; seen more C WC Nebraska sedge frequently east of Cascades; sucepitable to woody plant succession Carex pansa L.H. Bailey Park management; coastal erosion B CZ sand dune sedge Carex phaeocephala Piper More information needed to C WC, HC mountain hare sedge determine status Carex praticola Rydb. Woody species encroachment C WC meadow sedge Carex preslii Steud. Uncommon high elevation species; C WC, HC Presl's sedge no threats Carex raynoldsii Dewey Widely scattered and rare, but easy to C WC Raynold's sedge ID; monitor for woody succession Carex retrorsa Schwein. Road and wetland maintenance; UO 2 A WV retrorse sedge athletic facility expansion; reed canary grass invasion Carex scirpoidea Michx. ssp. stenochlaena (T. Roadside management; two sites in 2 A WC Holm) A. Löve & D. Löve Lane Co. Alaska single spiked sedge Carex simulata Mack. Rare in Lane Co.; more frequently C HC shortbeaked sedge seen east of Cascades Carex straminiformis L.H. Bailey Rare in Lane Co.; high elevation C HC Mt. Shasta sedge species; no threats Carex subfusca W. Boott More information needed to C WC rusty sedge determine status Carex vesicaria L. Rare in Lane Co.; high elevation C HC inflated sedge species; more frequently seen east of Cascades Carex viridula Michx. ssp. viridula Rare in Lane Co.; urban B CZ green sedge development; woody plant succession Page 4 Scientific Name Federal State ORBIC EmChap Ecoregion Threat/Comment Common Name Status Status List List Castilleja rupicola Piper Recent exploration has revealed more SOC 4 A WC, HC cliff paintbrush sites to the south than previously known Ceanothus prostratus Benth. var. prostratus Rare in Lane Co.; known from three C WC Mahala mat sites Ceratophyllum echinatum A. Gray Known from one historic site in 2-ex A-ex CZ hornwort Oregon; presumed extinct Cicendia quadrangularis (Lam.) Griseb. Sensitive habitat 2 A WV, WC timwort Cimicifuga elata Nutt. Logging practices; agency C 4 A CR, WV, tall bugbane management; nomenclature debate – WC waiting for OFP taxonomic decision Clarkia purpurea (Curtis) A. Nelson & J.F. Willamette Valley conservation target B WV Macbr. ssp. viminea (Douglas ex Hook.) F.H. plant; woody and invasive species Lewis & M.R. Lewis encroachment; grazing on private large godetia sites Claytonia washingtoniana (Suksd.) Suksd.