JV^o. 1.1 GRAY AND HOOKER ON THE ROCKY MOUNTAIN FLORA. 5^ 



Crantzia lineata. 



HydrocotyJe ranunculoides, &g. 



Osmorrliiza. 



Galium § Relbimium. 



Galium § Trichogalium. 



MilxCinla scandens ? 



Gutierrezia. 



Griudelia. 



Aplopappus. 



I^ardopbyllum (aff. Bigelovia). 



Micropus. 



Adenocaulou. 



Polyrauia. 



Thelesperma scabiosoides ! 



Madia sativa. 



Jaumea linearifolia. 



Lasthenia obtusifolia. 



Baliia. 



Sclikuhria. 



Blennosperma Obilense. 



Actinella sp. 



Gaillardia (Cercostylis) (Bonaria). 



SoliA^a (ISTortli American species im- 

 migrated?). 



Centaurea (Plectocephalus) Oliilen- 

 sis. 



Microseris pygmsea. 



Downiugia pusilla. 



IS])ecularia hiflora. 



Menodora sp. 



Primu la farinosa. 



Erytbraia Cbilensis. 



Gollomia gracilis, &c. 



Gilia pusilla. 



Gilia (NavaiTetia) involucrata. 



Gilia laciuiata. 



Pliacelia circinata. 



Pbacelia (Microgeuetes) Cumingii.. 



Coldeuia § Tiquilia. 



JEritrichium fulvum, &c. 



Amsinckia angustifolia. 



Solanmn elceagnifolium. 



Physalis viscosa. 



Mimulus luteus. 



Ortbocarpus australis. 



(Verbena § Glandularia, &c.) 



Plantago Patagonica. 



Plantago Mrtella. 



Plantago maritima (Eu. &c.). 



Oxybapbus sp. 



Allionia incarnata. 



Spirostacliys sp. 



Oxytheca dendroidea. 



Cborizautbe sp. 



Lastarreia Cbilensis (mentioned 



above). 

 Podostomon. 

 Lilcea suhulata. 

 Scirpus riparius. 

 Scirpus tatora. 

 Memicarplia suhsquarrosa. 

 Graminese, several. 



Microcala quadrangularis. 



Here are near upon 90 species or genera, and almost balf of tbem are 

 identical with a few proximately related species. Most of them affect 

 tbe Chilian side of the continent. One or two are known only on the 

 eastern side. The most remarkable of these are tbe Gaillardia and the 

 Thelesperma, of Buenos Ayres ; the former closely related to an equally 

 anomalous Texan sjiecies ; the latter almost identical with a Texano-Ne- 

 braskau species. One of the Stromhocarpa species of Prosopis, of the 

 southern end of Texas, is hardly and perhaps not specifically distinguish- 

 able from one of Buenos Ayres. Of the 40 or more identical species, 

 only 17 belong to the Atlantic flora; apparently only two of these are 

 peculiar to it as respects North America, namely, the little Lcpnropetalon 

 of tbe Atlantic coast, not again met with this side of Cbili, and tbe in- 

 significant Modiola multijida. Quite possibly tbe bitter was introduce{> 

 into North America as a ballast weed. 



