136 POLYGONEiE. ' lEriogonum. 



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longe angustatis subtus vel utrinque albo-Ianatis, pedunculis strictis gracilibus subdicho- 

 tomisj involucris parvis sessilibus terminalibusque paucifloris glabriusculis, dentibus 

 brevissimis subsequalibus. BentK L c, p, 414. 



Hab. Columbia River and Blue Mountains. Douglas. — " SufFrutex basi csespitosus, dense foliosus. Pe- 

 dunculi scapiformes, juncei, pedalea et ultra, basi simplices nudi, a medio 2-3-chotomi, ramis omnibus 

 strictis rigidis erectis tenuibus. BractecB parvse, lineares. Involucra pauca, secus ramos sessiles, pleraque 

 ad apices ramorum terminalia, vix lineam longa, Perianthia exserta, laciniis exterioribus demum valde 



auctis." 



14. E. niveum (Doiigl. mst.) ; suffruticosum, foliis oblongis basi angustatis peduncu- 

 loque albo-lanatis, bracteis patentibus, Involucris tenuibus niveis paucifloris, dentibus 

 alternis minutis, Benth, L c, p, 414. 



Hae. Rocky and sandy soils near the *' Great Falls" of the Columbia and valleys of the Blue Mountains, 

 Douglas. — " Suffrutex basi caespitosus, foliosus. Folia fere E, flavu Pedunculi scapiformes, pedales et 

 ultra." 



15. E. dichotomum (Dougl. mst.); suffruticosum, foliis oblongis basi angustatis pedun- 

 culoque albo-lanatis, bracteis brevibus appressis, involucris crassiusculis dense lanatis 

 plurifloris sessilibus, dentibus brevibus subtequalibus. Benlh, L c, p, 415. 



Hab. Common on the banks of the " Great Falls" of the Columbia, and of the river Utalla, N. W. Ame- 

 rica. Douglas. — " Affine E* niveo, sed rigidum strictum. Bractecs involucro dimidio breviores, appressae. 

 Involucra tubulosa, duplo majora quam in E, niveo. Elores exserti, raagnitudine fere E, compositi, Fila^ 

 menta basi pilis paucis donata. Ovarium glaberrimum." 



16. jE. c?ecMm&ews (Benth.); suffruticosum, foliis ovatis petiolatis utrinque cano-tomen- 

 tosis, pedunculi ramis flexuosis floccoso-lanatis, bracteis involucrum aequantibus patenti- 

 bus, involucris crassiusculis dense lanatis plurifloris sessilibus, dentibus recurvo-patentibus 

 alternis minutis. Benth, I. c, p, 415. 



Hab. Columbia River. Douglas. Walla-wallah. Tolmie. — ** J?(7?n2 foliiferi elongati, duri, dense tomen- 

 tosi. Folia pollicaria, petiolo 1-2-pollicari. BractecR inferiores oblongse, foliaceaB, ultra pollicares, superiores 

 lineares, Involucra forma fere E, niveij magnitudine E, dichotomi. Species habitu distinctissima." 



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17. E, viminetim (Dougl. mst.); annuum, foliis subradicalibus petiolatis ovatis subtus 



tomentosis, pedunculis scapiformibus divaricato-ramosissimis apice involucrisque glaber- 

 rimis. Benth, L c, p. 416. 



Hab. Barren grounds of the Columbia, near the base of the Blue Mountains. Douglas, — ** Pedunculi 

 scapiformes, complures, basi sublanati, 6-8-pollicares. Rami tenues, virgati. Involucra tenuia, cylindrica, 

 sessilia, dentibus brevibus obtusis subaequalibus. Perianthia breviter exserta, laciniae exteriores per anthesin 

 patulte obovatse, interioi'es erectse dimidio angustiores." 



