189 
In rocky places, Sweet Grass Cafion, Crazy Mountains. (Alt. 
7000 ft., no. 349.) It has also been collected at Deer Lodge, 
July 9, 1895, by myself (no. 2601). 
~CALOCHORTUS ACUMINATUS N. sp. PL. Sol. 
Stem about 2 dm. high, with a secondary bulb in the axis of 
the first leaf; leaves 3-5 cm. long, very narrow and involute from 
a broader sheathing base ; sepals narrowly lanceolate, scarious-mar- 
gined, acuminate, equalling, or more often, exceeding the petals; 
petals white, rhombic, obovate or oval, acuminate, hairy at the 
base around the oval-oblong gland ; filaments a little dilated, espec- 
ially below ; anthers linear, with slightly sagittate base, tapering a 
little upward, but not acute; stigma rather large and thick. 
(Plate 301.) 
Dry Mountains, near Lima, P. A. Rydberg, no. 2600, Aug. 5, 
1895. 
It is apparently nearest related to C. Muttallii, from which 
it differs by the longer sepals, longer and tapering anthers and the 
acuminate petals. 
HABENARIA DILATATIFORMIS. (Platenthera gracilis Lindl. Gen. & Sp. 
Orch. 288. 1835-9. Habenaria gracilis S. Wats. Proc. Am. 
Acad. 12: 277. 1877. Not Hook. Exot. Fl. p/. 735. 1825.) 
In general habit this most resembles H. hyperborea, from 
which it differs in the larger white flowers, in the lip, which is 
broadened at the base as in H. dilatata, although less so, and in 
the spur which is thickened at the end, From #. dilatata it 
differs in the less dilated lip and the shorter more saccate spur, 
which is slightly shorter than the lip. ; 
Common in marshy places at an altitude of 5000-6000 feet 
Spanish Basin by J. H. Flodman (nos. 360 and 361); also collected 
by P. A, Rydberg, in 1895, at Bozeman (no. 2607), and at Deer 
Lodge (no. 2608). : 
HABENARIA STRICTA (Lindl.). Platentera stricta Lindl. Gen. & Sp. 
Orch. 288. 1835-9. : 
This differs from the preceding in the greenish or purplish ies 
flowers, the narrower lip and the very short and much more sac- 
cate spur, which is scarcely more than one-half as long as the lip. 
flabenaria saccata Greene, Erythea, 3: 49, 1895, seems, from” the 
description, to be the same. It is fairly common 1 ey 
