(JO MISSOURI BOTANICAL GARDEN. 



677. /. 384. Bush, Kept. Mo. Bot. Gard. 6: 122, 



133. _ Britton & Brown, 111. Fl. 1 : 427. /. 1026. - 



Bray (in part*), Bot. Gaz. 32 : 271. /. 18. 



Y. angustifoliaPursh, Flora. 1 : 227. (1814). Nuttall, Gen. 1 S 218. 



Sims, Bot. Mag. 48. pi- 2236. Bommer, Journ. d'Hort. Prat. 



3. 41. _ Lemaire, 111. Hort. 13 : 99. Baker, Gard. Chron. 1870: 



923. Journ. Linn. Soc. Bot. 18 : 226. Engelmann, Bot. King. 496. 



Trans. Acad. St. Louis. 3 : 50. Palmer, Amer. Journ. Pharm. 50 : 



587. Watson, Proc. Amer. Acad. 14 : 253. Gard. & Forest. 2 : 



244, 247. /. Garden. 58 : 446. Kept. Mo. Bot. Gard. 3 : 163. 



pi. 8) 51. Wiener 111. Gart.-Zeit. 12 : 35. Bray (in part*), Bot. 



Gaz. 32 : 280. 



? Y. Hanburii Baker, Kew. Bull. 1892 : 8, 217. Gard. Chron. iii. 11 : 

 749. _ Wiener 111. Gart.-Zeit. 17 : 433. 



Subacaulescent or with branching prostrate stem. Leaves rather 

 rigidly divergent, 6 to 12 mm. wide, pallid, white-margined, soon finely 

 but usually sparingly flliferous. Inflorescence 1 to 2 m. high, simple or 

 with an occasional short included branch, floriferous from near the base, 

 glabrous. Flowers greenish-white, globose or oblong, campanulate 3 the 

 segments varying from broad and acute to longer and more attenuate ; 

 style green, tumid. Capsule large, oblong, usually not constricted, 

 somewhat roughened, brown: seeds very glossy, 7 to 9 X H to 13 mm. 

 Plates 23, f. 2. 24, f. 2. 25. 83, f. 9. 



Central South Dakota and southern Wyoming, to north- 

 west Missouri, Central Kansas and the vicinity of Santa Fe, 

 New Mexico. Plate 93, f. 1. 



The usual form from Trinidad southward is prevailingly 

 narrower-leaved than that of the north and east. 



This low capsular bear-grass or soap-weed of the central 

 Rocky Mountain region and northern plains, is almost in- 

 variably marked by a simple inflorescence, not carried on 

 a scape above the cluster of leaves. Only exceptionally 

 are any branches formed on the panicle, and then these, 

 which are toward its base, are very small and few in num- 

 ber, though when the developing inflorescence has been 

 injured a greater development of these potential rudiment- 

 ary basal branches is observed. 



* See note under Y. constricta above. 



