GEOLOGICAL SURVEY OF THE TEREITORIES. 493 



Polygonum coarctatum^ Dougl., var. onimis, Meisn. — ^Yellowstone Lake. 

 Folygonum Convolvulus, L. — Fort Ellis to the Yellowstone. 



El^eagnace^. 



Shepherdia Canadensis, Nutt. — Fort Ellis to the Yellowstone j Yellow- 

 stone Lake. 



Santalace^. 



Comandra pallida, D. 0. — Utah Territory j Pleasant Yalley. 



LORANTHACE^. 



AreeutJwhium Americanum, Nutt., in Herb. Durand. — Yellowstone 

 Lake. — A specimen was sent to Dr. Engelmann, who kindly famished the 

 name and the following note : '' You follow Hooker in naming it A. Oxy- 

 cedri, which, however, has never been found in America. Your plant 

 is the same as the male figured by Hooker (Fl. Bor. Am., 2, t. 99) and 

 no doubt from the same tree, Finns contorta, and is a female. Hooker's 

 female is a distinct species. Mr. Meehan obtained the same plant in 

 Colorado from the same tree last summer. Nuttall also found only the 

 male, as well as Drummond and several other collectors.'' 



Oallitrichace^. 



Callitriclie verna, L. — Lower Falls of the Yellowstone. 



EUPHORBIACE^. 



JEuphorMa glyptosperma, Engelm. — Stinking Water Creek j Yellow- 

 stone Lake. 

 JEupliorbia dictyosperma, F. and M. — Madison Valley. 

 Euphorbia montana, Engelm. — Crow agency. 



IJrticace^. 

 JJrtiea gracilis, Ait. — Stinking Water Creek j Medicine Lodge. 



CUPULIFER^. 



Quercus alba, L., var. Gunnisoni, Torr. — Mountains near Ogden, Utah 

 Territor^^ 



Betulace^. 



Betula occidentalis, Hook. — Yellowstone Eiver ; Spring Creek, Northern 

 Idaho. 

 Betula glandulosa, Michx. — Pleasant Yalley j Yellowstone Lake. 

 Alnus viridis, D. C. — Yellowstone Lake. 

 Alnus incana, Willd. — Madison Yalley. 



Saltcace^. 



Salix longifolia, Muhl. — Utah Territory ; Crow agency. — Li some speci- 

 mens, the serratures of the leaves are very sparse or almost obsolete. 

 Salix longifolia, Muhl., var. argyrophylla, Nutt. — Utah Territory. 

 Salix nigra, Marsh., var. amygdaloides, Anders. — Utah Territory. 

 Salix cordata, Muhl., var. — Weber Eiver Valley, Utah Territory. 



