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pansa Aristida patula Aristida purpurascens var. purpurascens Aristida purpurascens var. tenuispica Aristida purpurascens var. virgata Aristida purpurea

oligantha, Aristida palustris, Aristida pansa, Aristida patula, Aristida purpurascens, Aristida purpurea, Aristida ramosissima, Aristida rhizomophora, Aristida

perplexa, Calamagrostis pickeringii, Calamagrostis porteri, Calamagrostis purpurascens, Calamagrostis rubescens, Calamagrostis scopulorum, Calamagrostis sesquiflora

Platanthera peramoena, Platanthera praeclara, Platanthera psycodes, Platanthera purpurascens, Platanthera sparsiflora, Platanthera stricta, Platanthera tipuloides

Sporobolus nealleyi, Sporobolus neglectus, Sporobolus pinetorum, Sporobolus purpurascens, Sporobolus pyramidatus, Sporobolus silveanus, Sporobolus tenuissimus

Boerhavia linearifolia, Boerhavia megaptera, Boerhavia pterocarpa, Boerhavia purpurascens, Boerhavia spicata, Boerhavia torreyana, Boerhavia triquetra, Boerhavia

oregonum, Erythronium pluriflorum, Erythronium propullans, Erythronium purpurascens, Erythronium pusaterii, Erythronium quinaultense, Erythronium revolutum

speciesAristida purpurascens Show Lower Taxa Aristida purpurascens var. purpurascens, Aristida purpurascens var. tenuispica, Aristida purpurascens var. virgata

Calamagrostis purpurascens var. laricina Calamagrostis poluninii Calamagrostis lepageana Calamagrostis laricina Calamagrostis arundinacea var. purpurascens Treatment

136, plate 36. 1801 Synonyms: Ceratodon purpurascens (Hedwig) Jennings Ceratodon purpureus var. purpurascens (Hedwig) Bridel Ceratodon purpureus var.

cusickii subsp. epilis, Poa cusickii subsp. pallida, Poa cusickii subsp. purpurascens Vasey Robert J. Soreng Common names: Cusick's bluegrass Endemic Treatment

thorild-wulffii (Ostenfeld) V. V. Petrovsky Braya purpurascens subsp. thorild-wulffii (Ostenfeld) Hultén Braya purpurascens var. thorild-wulffii (Ostenfeld) B. Boivin

speciesAristida purpurascens varietyAristida purpurascens var. purpurascens Kelly W. Allred Common names: Arrowfeather threeawn Synonyms: Aristida purpurascens var

tribePoaceae tribe Aristideae genusAristida speciesAristida purpurascens varietyAristida purpurascens var. tenuispica (Hitchc.) Allred Kelly W. Allred Treatment

tribePoaceae tribe Aristideae genusAristida speciesAristida purpurascens varietyAristida purpurascens var. virgata (Trin.) Allred Kelly W. Allred Endemic Synonyms:

subsp. glabella, Braya glabella subsp. prostrata, Braya glabella subsp. purpurascens Richardson in J. Franklin et al., Narr. Journey Polar Sea, 743. 1823

speciesLilium washingtonianum Show Lower Taxa Lilium washingtonianum subsp. purpurascens, Lilium washingtonianum subsp. washingtonianum Kellogg Hesperian (San

One-and-a-half-flowered reedgrass Synonyms: Calamagrostis purpurascens subsp. tasuensis Calamagrostis purpurascens subsp. arctica Calamagrostis arctica Treatment

Castilleja pruinosa, Castilleja puberula, Castilleja pulchella, Castilleja purpurascens, Castilleja purpurea, Castilleja raupii, Castilleja revealii, Castilleja

glabella subsp. purpurascens (R. Brown) W. J. Cody Canad. Field-Naturalist 108: 93. 1964. James G. Harris Basionym: Platypetalum purpurascens R. Brown Chlor

Potentilleae genusHorkeliella Show Lower Taxa Horkeliella congdonis, Horkeliella purpurascens (Rydberg) Rydberg in N. L. Britton et al., N. Amer. Fl. 22: 282. 1908

LAYOUT:treatment:TUOYAL familyLiliaceae genusErythronium speciesErythronium purpurascens S. Watson Proc. Amer. Acad. Arts 12: 277. 1877. Geraldine A. Allen, Kenneth

subsectionPoa subsect. Epiles speciesPoa cusickii subspeciesPoa cusickii subsp. purpurascens (Vasey) Soreng Robert J. Soreng Endemic Treatment appears in FNA Volume

LAYOUT:treatment:TUOYAL familyNyctaginaceae genusBoerhavia speciesBoerhavia purpurascens A. Gray Amer. J. Sci. Arts, ser. 2, 15: 321. 1853. Richard W. Spellenberg

Chloridoideae tribePoaceae tribe Cynodonteae genusSporobolus speciesSporobolus purpurascens (Sw.) Ham. Paul M. Peterson, Stephan L. Hatch, Alan S. Weakley Common

speciesLilium washingtonianum subspeciesLilium washingtonianum subsp. purpurascens (Stearn) M. W. Skinner Novon 12: 258. 2002. Mark W. Skinner Common names:

tribePoaceae tribe Meliceae genusSchizachne Show Lower Taxa Schizachne purpurascens Hack. Jacques Cayouette, Stephen J. Darbyshire Treatment appears in FNA

Al-Shehbaz Endemic Basionym: Arabis purpurascens Howell ex Greene Pittonia 1: 161. 1888, Synonyms: Arabis furcata var. purpurascens S. Watson Treatment appears

Greenef Common names: Serpentine reedgrass Endemic Synonyms: Calamagrostis purpurascens var. ophitidis Treatment appears in FNA Volume 24. Treatment on page

8: 181. 1870. James L. Reveal Endemic Basionym: Eriogonum cernuum var. purpurascens Torrey & A. Gray in War Department [U.S.], Pacif. Railr. Rep. 2(1): 124

var. arcticus Bromus inermis subsp. pumpellianus Bromus inermis var. purpurascens Bromopsis pumpelliana var. arctica Bromopsis pumpelliana Bromopsis inermis

Horkelia purpurascens S. Watson Proc. Amer. Acad. Arts 11: 148. 1876 Synonyms: Ivesia purpurascens (S. Watson) D. D. Keck Potentilla purpurascens (S. Watson)

Pooideae tribePoaceae tribe Meliceae genusSchizachne speciesSchizachne purpurascens (Torr.) Swallen Jacques Cayouette, Stephen J. Darbyshire Common names:

Basionym: Limnorchis purpurascens Rydberg Bull. Torrey Bot. Club 28: 269. 1901 Synonyms: Platanthera hyperborea var. purpurascens (Rydberg) Luer Treatment

longiligula var. australis Agrostis longiligula Agrostis exarata var. purpurascens Agrostis exarata var. pacifica Agrostis exarata var. monolepis Agrostis

subspeciesCeratodon purpureus subsp. purpureus Terry T. McIntosh Synonyms: Dicranum purpurascens Hedwig Treatment appears in FNA Volume 27. Treatment on page 447. Plants

LAYOUT:treatment:TUOYAL familyOrobanchaceae genusCastilleja speciesCastilleja purpurascens Greenman Bot. Gaz. 42: 146. 1906. J. Mark Egger, Peter F. Zika, Barbara

Nick Otting Synonyms: Orthocarpus purpurascens Bentham 1835 [not Castilleja purpurascens Greenman 1906] O. purpurascens var. pallidus D. D. Keck Treatment

claviformis var. purpurascens (S. Watson) Cronquist O. claviformis var. purpurascens (S. Watson) Munz O. scapoidea var. purpurascens S. Watson Treatment

202. 1926. James G. Harris EndemicConservation concern Synonyms: Braya purpurascens var. longii (Fernald) B. Boivin Treatment appears in FNA Volume 7. Treatment

17A. 1830. James G. Harris EndemicConservation concern Synonyms: Braya purpurascens subsp. pilosa (Hooker) Hultén Treatment appears in FNA Volume 7. Treatment

Illustrated Synonyms: Cyperus brizaeus Vahl Cyperus brunneus Swartz Cyperus purpurascens Vahl Treatment appears in FNA Volume 23. Treatment on page 172. Mentioned

Rahmona A. Thompson Common names: Paragrass Introduced Synonyms: Panicum purpurascens Brachiaria mutica Treatment appears in FNA Volume 25. Treatment on page

viscosum Sophia glandulifera Sophia incisa Sophia leptophylla Sophia purpurascens Sophia serrata Sophia sonnei Sophia viscosa Treatment appears in FNA

2. 1948. James G. Harris EndemicConservation concern Synonyms: Braya purpurascens var. fernaldii (Abbe) B. Boivin Treatment appears in FNA Volume 7. Treatment

Synonyms: H. purpurascens subsp. congdonis (Rydberg) Abrams Ivesia purpurascens subsp. congdonis (Rydberg) D. D. Keck Potentilla purpurascens var. congdonis (Rydberg)

exannulatus var. purpurascens (Schimper) Herzog D. exannulatus var. rotae (De Notaris) Loeske Warnstorfia exannulata W. exannulata var. purpurascens (Schimper)

bryoides (R. Brown) Ångstrom B. purpurascens (R. Brown) Bruch & Schimper Ptychostomum bryoides (R. Brown) J. R. Spence P. purpurascens (R. Brown) J. R. Spence

Guy L. Nesom Illustrated Synonyms: Pluchea petiolata Cassini Pluchea purpurascens (Swartz) de Candolle Treatment appears in FNA Volume 19. Treatment on

coloradensis (Rydberg) Holub Noccaea glauca (A. Nelson) Holub Thlaspi alpestre var. purpurascens (Rydberg) Ostenfeld Thlaspi australe Rydberg Thlaspi coloradense A. Gray

Calamagrostis purpurascens (p. 710) (C.L. Hitchcock et al. 1969) or C. sesquiflora (p. 714) (Kawano 1965). It differs from C. purpurascens in having glabrous

Guy L. Nesom Common names: Saltmarsh fleabane Endemic Basionym: Pluchea purpurascens var. succulenta Fernald Rhodora 44: 227. 1942 Treatment appears in FNA

Castilleja exserta subsp. venusta (A. Heller) T. I. Chuang & Heckard O. purpurascens var. ornatus Jepson Treatment appears in FNA Volume 17. Treatment on

latifolium Fenzl Cerastium arvense var. ophiticola Raymond Cerastium arvense var. purpurascens B. Boivin Cerastium arvense var. sonnei (Greene) Smiley Cerastium arvense

Common names: Stipoid ricegrass Synonyms: Piptochaetium stipoides var. purpurascens Treatment appears in FNA Volume 24. Treatment on page 166. Illustrator:

Wilson, Richard E. Brainerd, Nick Otting Endemic Basionym: Orthocarpus purpurascens var. latifolius S. Watson Botany (Fortieth Parallel), 458. 1871 Synonyms:

rivularis var. hyperborea (R. Brown) Hooker Saxifraga rivularis var. purpurascens Lange Treatment appears in FNA Volume 8. Treatment on page 144. Mentioned

has not been verified. Calamagrostis montanensis may be mistaken for C. purpurascens (p. 710), but the latter species has hairy adaxial leaf surfaces and

quite distinct from subspp. cusickii and pallida, and differs from subsp. purpurascens in having on average more and shorter spikelets, lemmas that are shorter

lemmas, and lacks a well-developed web. It approaches P. cusickii subsp. purpurascens (p. 562), but is rhizomatous and sexually reproducing. It differs from

Lilium bolanderi hybridizes with L. rubescens, L. washingtonianum subsp. purpurascens, and subspecies of L. pardalinum. Bolander’s lily is primarily pollinated

the western Northwest Territories. It differs from P. cusickii subsp. purpurascens (p. 562) in having panicles with laxer, smooth, and more slender branches

albiflora. Platanthera dilatata hybridizes with P. huronensis and P. purpurascens, and perhaps also does so with other related species; see the note under