to the Rochj Mountains. 251 



ASPHODELE^. 



438. Zigadenus elegans, Pursh Jl. i. p. 241. Barren and 

 waste places along the Arkansa, 



439. Z. chloranthus, Richards, app. ed. 2. p. 12. 

 Melanthium glaucum, JYutt gen. i. p. 232. On the Platte. 



440. Scilla esculenta, Bot. mag. 1574. Phalangium 

 esculentum, Nutt. gen. i. p. 219. P. Quamash, Pursh Jl. i. 

 p. 226. On the Arkansa, Sic. 



441. Allium striatum, D. Donmonog. all. p. 100. Willd. 

 sp.pl. ii. p. 77. Pursh Jl. i. p. 223. About the lead mines 

 of Missouri. 



442. Melanthium hybridum, Walt. Pursh Jl. i. p. 241. 

 On the Missouri. 



443. Ornithogalum bracteatum, scapo bracteato, uni- 

 floro, tereti; petalis oblongo-lanceolatis, obtusiusculis ; fila- 

 mentis linearibus ; foliis fHiformibus, canaliculatis. 



Desc. Root perennial. Scape about four inches high, clothed at the 

 base with numerous lanceolate marcescent sheaths, erect, terete, smooth? 

 slender, furnished at regular intervals with linear-lanceolate bracts, one of 

 which is immediately below the flower. Flower pale purple, erect ; exterior- 

 petals oblong-lanceolate, rather obtuse, obscurely three nerved ; interior, 

 somewhat narrower, without nerves. Stamens 6, shorter than the corolla ; 

 filaments narrow-linear, smooth ; anthers oblong-, yellow. Germcn oblong, 

 obtusely triangular, 3-celled ; style subtriangular, dilated upwards, smooth, 

 stigma capitate, somewhat 3-Iobed. 



Hab. On the Rocky Mountains. 



Obs. Resembles O. spathaceum of Europe, but differs in 

 its 1-flowered scape, &tc. 



ALISMACE^. 



444. Alisma Plantago, L. Willd. sp. pi. ii. p. 276. 

 Sources of the Platte. 



445. Sagittaria sagittifolia, L. Willd. sp.pl. iv. p. 408. 

 Sources of the Platte. 



