1886, | BOTANICAL GAZETTE. 177 
Montana. It is distinguished from A. striata by its rigidly up- 
right stems, strict, rather densely flowered, erect panicle, and 
larger spikelets. It is the Avena versicola of Hooker (Flor. 
Bor.-Am.), but certainly not of Villars. It equals no. 372 Serib- 
ner, Montana collection, distributed in 1884, under the name of 
Avena pratensis L. var. Americana. 
pecimens of this grass were communicated to Prof. E. Hackel, 
of Austria, who states in a letter dated June 27, 1884, that it is 
a species he had long known, having first received it from Eu- 
ropean Russia and later from the Ural Mts. and also from the 
mountains of Altau and Dauria, in Northern Asia. He adds 
that he did not publish the species because he was uncertain of 
its specific distinction from A. pratensis L. and A. compressa 
Heuff., but at that time he considered it “quite as distinct as 
most of the species of the group of pratensis, which is a very per- 
plexing one and can only be treated monographically.” 
27. (269, 597.) DANTHONIA INTERMEDIA Vasey in Torr. 
Bull., May, 1883.—Dry and moist meadows, from 7500 to 8500 
ft. alt., rather common. 
panicle, more appressed, and consequently the spikelets are more 
crowded ; the outer glumes are about the same length as those in 
D. sericea (13-16 mm.) but they are fully twice as broad and have 
a different venation, while the flowering glumes are fully twice as 
large and perfectly smooth excepting along the margins below, as 
In D. Californica, but there are abundant differences separating 
It from that species. 
_ Incentral Montana this grass occurs most frequently asso- 
ciated with Festuca scabrella at from 6000-8000 ft. alt. 
28. (596.) DanrHonta Catirornica Boland. var. UNISPI- 
cata Thurb. in S. Wats. Bot. Calif. II, p. 294; Coulter, Man. 415. 
D, unispicata Munro in Herb. D. monostachya Nutt. in Herb. 
Phila. Acad.—Dry rocky open places, Slough creek, rare. 
29. (260.) KaLERIA CRISTATA Pers.; Coulter, Man. 418. 
—Common everywhere in dry situations up to alt. 8000 ft. For 
notes upon this species see Scribner in Proc. Kansas Acad. Sci- 
ence, p. 117, plate III. 
io. 577 ? Catasprosa aquatica P. B.; Coulter, Man. 419. 
—In water, Gardener’s river, alt. 5400 ft. Not seen elsewhere. 
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