Holm, The genus Carex in North -West America. 



CO 



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S « 



O O 



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o 

 Cd 



Spirostachi/ae Drej. 



/■^ay« L 



„ var. lexy'ulocarxm Tausch. 



Oederi Ehrh 



Echinostachyae Drej. 



microglochin Wahl. . . . 



pauciflora Lightf 



comosa Boott 



lujstricina IVIuehl 



retrorsa Schw 



„ var. Hartii Gr. . . 

 Physocarpae Drej. 



ambusta Boott 



ampullacea Good 



rotiiudata Wahl , 



utriculata Boott , 



physocarpa Presl . . . , , 



phiisochlaena nob 



^jmW« Good 



mirata Dew 



compada R. Br 



Physocephalae Bail. ex p. 



Breweri Boott 



Bhynchophorae nob. 



monile Tuckm 



pacifica Bail. . . 

 colorata Bail. . . 



var. 



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Of these 195 species and varieties of Carex 67 are Vigneae 

 and 128 Carices genuinae.^) The grex [richest in species is 

 Microrhynchae with 27, after which follow [Melananthae with 15, 

 Aeorastachyae with 14, Äthrostachyae with 15, Physocarpae with 9, 

 Brachystachyae, NeuroMaenae, Acanthophorae and Sphaeridiopjhorae 

 each with 7. 



1) In Mr. Howell's Flora of Northwest America the following species are 

 enumerated: C. anguntafa Boott (Wash.), BarLarae Dew. (Oregon), brunnes- 

 cens Poir. (Oreg.), deftexa Hornem. (Oreg. Alaska), frigida All (Wash.), hetero- 

 neura W. Boott (Idaho), nudata Boott (Oreg.) riparia Curt. (Idaho), Tolmiei 

 Boott (Oreg.) and vallicola Dew. (Idaho). We have seen no specimens of 

 these, and have not ventured to add them to our list since the identification 

 seems doubtful. — We have, furthermore, omitted C. Idahoa Bail., since the 

 systematic position of this interesting species is uncertain; it may belong 

 to the Melauanthoe. 



