GElifEEAL EEPORT. 



XXXV 



species, thirteen are not know on tlie Pacific side — of these five are arctic 

 and three subarctic, and of the remainder forty-one are arctic and twelve sub- 

 arctic. Six species are Mexican. 



In determining the alpine or subalpine character of a species, exposure, 

 altitude, and season have all been taken into account. In the absence in 

 many cases of any forest growth to indicate the limit of arborescent vegeta- 

 tion and, independently of altitude or the protection of trees, the flora of any 

 mountain locality being greatly influenced by a warm and sunny exposure or 

 the opposite, the question has often been very much one of judgment, to be 

 decided by no single arbitrary consideration. Species of doubtful rank as 

 alpine, or evidently only approaching it, have been considered subalpine, and 

 those that were also found at lower elevations than either term would imply 

 are indicated by an asterisk. The number of alpine and subalpine species 

 (114) equals that of the arctic and subarctic, but they are quite differently 

 distributed, the large majority belonging to the second rather than the third 

 division. 



Mountain Species of the Basin. 



(a.) 

 Ranunculus digitatus. Subalp. 

 Sisymbrium junceum. 

 Viola Beckwithii. 

 Lychnis nuda. 

 Stellaria Kingii . 

 Arenaria aculeata. 

 Claytonia umbellata. 

 Spraguea paniculata. 

 Lupiuus meionanthus . 

 Dalea Kingii. — 

 Astragalus diphysus. S. 



calycosus. Alp.* 



atratus. 



obscurus. 



Robbinsii, var. Subalp. Vt. 



cyrtoides . 



filipes. 



porrectus. 



tegetarius. Alp. 

 Cowania Mexicana. Mex. 

 Ivesia Baileyi . 

 Tellima tenella. S. 

 Sedumdebile. 'Subalp. 

 CEnothera heterantha. 

 Opuntia sphserocarpa, var. 

 Cymopterus nivalis . 

 glaucus . 

 Selinum capitellatum. 

 Peucedanum Nuttallii. 



millefolium, 

 graveolens . Subalp . 

 Galium bifolium. 

 Bloomeri. 



Brickellia microphylla . 

 Aster Bloomeri . 



asperugineus . Subalp . 



pulchellus . Subalp . 

 Townsendia scapigera. 

 Diplopappus alpinus . 

 Erigeron Bloomeri. 

 Aplopappus acaulis. 

 Laphamia Stansburii . 

 Balsamorrhiza hirsuta. 

 Heliantbella multicaulis. 

 Tanacetum canum. 

 Calais macrochaeta . S . 

 Stephanomeria myrioclada. 

 Pentstemon Kingii. 

 CoUomia tenella. 

 Gilia Watsoni . 

 Eriogonum Kingii. Alp.* 

 Fritillaria atropurpurea. 

 Calochortus eurycarpus. 

 Carexfrigida. Subalp. Eu. 

 Poa (?) Kingii. 



Delphinium depauperatum. 

 Cheiranthus Menziesii. 

 Arabis platysperma. 

 DrabaDouglasii. 



nemorosa. Alp.* Val. Arc. 

 Sisymbrium Callfornicum . Subalp . * 

 Silene Douglasii. 

 Claytonia perfoliata , Subarc . 

 Spraguea umbellata. 

 Lewisia rediviva . S . 

 Ceanothus sorediatus. 



Lupinus laxifiorus. 



polyphyllus. 

 argenteus . 

 sulphureus . 

 Trifolium raicrocephalum. 

 Astragalus platytropis . Alp . 

 Gercocarpus ledifolius. 

 Potentilla glandulosa. 

 Crataegus rivularis. Val. 

 Saxlfraga punctata. Arc. 

 Heuchera cylindrica, var. Alp. 

 Ribes bracteosura. Subarc. 

 Epilobium obcordatum. Subalp. 

 Clarkia rhomboldea. 

 Gayophytum diffusum. 

 Pimpinella apiodora. 

 Myrrhis occidentalis. 

 Cymopterus fceniculaceus. 

 Angelica Breweri. 

 Cornus pubescens. 

 Galium multiflorum. 

 Eupatorium occidentale. 

 Brickellia oblongifolia. 

 Aster Douglasii. Val. 



elegans. 

 Erigeron Breweri. Subalp. 

 Solidago Guiradonis. 

 Aplopappus Bloomeri. 



nanus . 



sufFruticosus. 



apargioides. 



paniculatus. 

 Wyethia mollis. 

 Bahia leucophylla. 



