156 
& Rupr. Stipac. p. §7; Scribner Bot. Gat. xi. p. 171; Stipa 
Richardsonti, var. major, Macoun Cat. Can. PI. iv. p. 191. 
Western North America (Richardson, Borgeau), Yellowstone 
National Park (Tweedy), Rocky Mountains, at Morley and west- 
ward to Donald in the Columbian Valley (Macoun), Montana 
(Scribner No. 341). : 
In this species the more widely spreading panicle is 15-20 
cm. long, spikelets 7-9 mm., and awn 12-20 mm. The empty 
glumes are acute, as is also the callus. The differential charac- 
ters given by Trinius and Ruprecht, who had evidently seen 
Link’s specimens, are as follows: Panicule pauciflore radiis in- 
ferioribus dinis, divaricato-patentibus, inferne nudis, versus — 
cem spiculas 2-6 gerentibus; giumis acutis subzequalibus (superiore 
tantum ¥ linea breviore), valvulam 2-3 lineam hirsutam egal 
tibus; arista subpersistente, torta, geniculata, 8-10 lineali; an- 
theris barbulatis. 
The italics are as in original. The empty glumes are de- 
scribed as acute, and the measurements given for the parts of the 
spikelet apply only to the western plant. 
DESCRIPTION OF PLATE CXXVII. 
wf: Entire plant. 
a, Spikelet from same. 
¢. The same with the empty glumes removed. 
d, Empty glumes from a spikelet of Stipa Macounii. 
e. Floret of same. 
Reviews of Foreign Literature. 
Monographie der Gattung Caltha. FE. Huth. (Helios, Monat. 
Mittheil. Gesammptg. Naturwissenschaften, ix. 55-773 t i.) 
The author recognizes nine species, the following American: 
C. sagittata, Cav. with var. latifolia, C. appendiculata, Pers., with 
var. Chilensis, and C. dioneifolia from South America; C. “f 
tosepala, DC., with vars. rotundifolia and Howellit, and C. palus- 
tris, L. with vars. flabellifolia, arctica, parnassiifolia, asarifolta 
and typfica from North America. 
As to the treatment of the North American plants, C. lepto- 
sepala, var. rotundifolia is based on a specimen from Dr. Gray; 
collected in the Rocky Mountains and preserved in the Vienm@ 
