to the Rocky Mountains. 237 



3G5. P. pusilla, Nutt. gen. i. p. 100. Tor.fl. i. p. 184. 

 On the Missouri. 



366. P. glabra, Nutt. 1. c. Moist soils on the upper 

 part of the Platte. 



367. P. eriopoda, acaulis, petiolis basi lana longissiraa 

 vestitis ; foliis lato-lanceolatis, utrinque attenuatis, longe 

 petiolatis, glaberrimis, integerrimis, quinquenerviis; scapo 

 tereti, glaberrimo ; spica cylindrica, folia superante ; flori- 

 bus remotis ; staminibus stylisque longissimis ; bracteis lato- 

 ovatis, obtusiusculis ; capsulis dispermis. 



P. attenuata ? James in Long's Exped. i. p. 445. 

 Desc. Root perennial. Base of the leaves and scape invested with 

 long dense wool, of a rusty brown colour. Leaves nearly a foot long and 

 an inch broad, attenuate at the base into a very long petiole, acute, very 

 smooth and entire, distinctly 5-nerved. Scape longer than the leaves, 

 smooth, a little compressed ? Spike (when in fruit) 3 inches long. Flow- 

 ers scattered and clustered ; segments of the calyx ovate acute. Stamens 

 much exserted. Style as long as the stamens, pubescent ; stigma simple. 

 Bracts broad-ovate, scarious on the margin, mostly obtuse. Capsule 2- 

 celled ; cells 5-seeded. 



Hab. Depressed and moist situations along the Platte. 



Obs. I have seen this plant in the herbarium of Mr. and 

 Mrs. Sheppard, of Woodfield, near Quebec, collected by 

 Pursh on the island of Anticosti. The woolly base is usually 

 concealed in the soil. 



NYCTAGINE2E. 



368. Oxybaphus angustifolius. Calymenia an gust i- 

 folia, Nutt. gen. i. p. 26. C. linearis, Pursh fl. supp. ii. p. 

 728. On the Platte. Fruit becoming coated with a viscid 

 mucilage when moistened. 



369. O. multiflorus, pulverulente minuteque pubes- 

 cens ; foliis lato-cordatis, acutis, integerrimis ; involucro 

 magno 5 — 7-floro, quinquefido ; floribus sub-pentandris ; 

 staminibus vix exsertis. 



