GEOLOGICAL SURVEY OF THE TERRITORIES. 473 



Trollius. laxus, Salisb — Wyoming Territory ; August to September. 

 In fruit. 



Delphinium azureum, Michx. — Denver ; Camp Carlin, Wyoming Ter- 

 ritory. 



Delphinium elatum, L. — Mountains near Denver. 



PAPAVERACEJE. 



Argemone Mexicana, L. — Denver ; Camp Carlin, Wyoming Territory. 



FTJMARIACEJE. 



Corydalis aurea, Willd. — Near Denver. 



CRUCIFER^E. 



Nasturtium sinuatum, Nutt. — Near Denver. 

 Nasturtium obtusum, Nutt. — Henry's Fork of Green Eiver. 

 Arabis lyrata, L. — Near Denver. 

 Arabis hirsuta, Scop. — Near Denver. 



Streptanthus linear if olius, Gray. — Camp Carlin, Wyoming Territory. 

 Cardamine paucisecta, Benth. — Henry's Fork of Green Eiver. 

 Erysimum asperum, DC. — Denver. 

 Draba aurea, Vahl. — Near Denver. 



Draba nivalis, Willd. — (D. rupestris, E. Br., var. " silieulis glabris," 

 Hook. Fl. Bor. Am., 1, p. 53.) — Uinta Mountains. 

 Vesicaria Ludoviciana, DC. — Near Denver. 

 Physaria didymocarpa, Gray. — Near Denver. 

 Lepidium ruderale, L. — Gray, PI. Wright, 2, p. 15. — Denver. 

 Lepidium sativum, L. — Near Denver. Probably introduced. 

 Thlaspi Fendleri, Gray. — Uinta Mountains, Wyoming Territory. 



CAPPARIDACE.33. 



Cleome integrifolia, Torr. and Gray. — Denver; Camp Carlin, Wyo- 

 ming Territory. 



Polanisia trachysperma, Gray. — Wyoming Territory ; August to Sep- 

 tember. 



CARYOPHYLLACEJE. 



Silene acaulis, L. — Mountains near Denver. 



Lychnis apetala, L., var. pauciflora, DC. — Uinta Mountains. 



Arenaria congesta, Torr. and Gray. — North Park, Colorado Territory; 

 Uinta Mountains, Wyoming Territory. 



Arenaria Fendleri, Gray, (PI. Fendler., p. 13). — Denver. 



Arenaria arctica, Stevenson. — Mountains near Denver ; Uinta Moun- 

 tains. 



Arenaria Bossii, E. Br. — Henry's Fork of Green Eiver. 



Arenaria verna, L. ? — Uinta Mountains, Wyoming Territory. In fruit 

 only, with old capsules which have shed their seed. 



Stellaria borealis, Bigelow. — Henry's Fork of Green Eiver. 



Cerastium arvense, L. — Near Denver. 



Paronychia sessiliflora, Nutt.— Camp Carlin, Wyoming Territory. 



Paronychia Jamesii, Torr. and Gray. — Near Denver. 



MALVACEAE. 



Malvastrum coccineum, Gray. — Denver; Camp Carlin, Wyoming Ter- 

 ritory. 



Sidalcea malvwfiora, Gray. — North Park, Colorado Territory; Uinta 

 Mountains. 



