60 MISSOURI BOTANICAL GARDEN. 
677. f. 384.— Bush, Rept. Mo. Bot. Gard. 6: 122, 
133.— Britton & Brown, Ill. Fl. 1: 427. f. 1026. — 
Bray (in part*), Bot. Gaz. 82: 271. f. 18. 
Y. angustifolia Pursh, Flora. 1 : 227. (1814).— Nuttall, Gen. 1 : 218. — 
Sims, Bot. Mag. 48. pl. 2236.—Bommer, Journ. d’Hort. Prat. 
8: 41. — Lemaire, Ill. Hort. 18 ; 99. — Baker, Gard. Chron. 1870: 
923. Journ. Linn. Soc. Bot. 18; 226. — Engelmann, Bot. King. 496. 
Trans. Acad. St. Louis. 8 : 50.— Palmer, Amer. Journ. Pharm. 50: 
587. — Watson, Proc. Amer. Acad. 14 : 253. — Gard. & Forest. 2: 
244, 247. f. — Garden. 58 ; 446.— Rept. Mo. Bot. Gard. 8: 163. 
pl. 8, 51. — Wiener Ill. Gart.-Zeit. 12 : 35.— Bray (in part*), Bot. 
Gaz. $2: 280. 
? Y. Hanburii Baker, Kew. Bull. 1892 : 8, 217. Gard. Chron. iii. 11: 
749. — Wiener Ill. 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 filiferous. 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, 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 & 11 to 138 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 Fé, 
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. 
