NEW OR NOTEWORTHY GRASSES 
and calls the species Sphenopholis palustris (Michx.) Scribn. He 
ignores Avena pennsylvanica L. because Linnaeus described the species 
as having a villous ovary (/'seminibus villosis"). The specimen in the 
Linnaean Herbarium collected by Kalm has been examined and it 
is identical with the species that has been called Sphenopholis palustris 
and Trisetum pennsylvanicum Beauv. The ovary is not pubescent but 
Linnaeus's description applies in other respects. As the name is 
based on a specimen collected in Pennsylvania by Kalm, we may 
assume that this specimen is the type and that the description is in 
error as to the statement "seminibus villosis." 
Danthonia Cusickii (Williams). Danthonia intermedia Cusickii Wil- 
liams, U. S. Dept. Agr. Div. Agrost. Circ. 30: 7. 1901. 
This differs from D. intermedia Vasey in being more robust, with 
larger spikelets, and with acute or acuminate rather than aristate 
lobes of the lemma. 
Danthonia Macounii n. sp. 
A cespitose perennial; culms erect, glabrous, 30 to 50 cm. high; 
sheaths villous, the hairs from small papillae; ligule a narrow ciliate- 
margined membrane; blades flat, becoming involute, villous above, 
glabrous beneath, erect, 10 to 20 cm. long, 3 to 4 mm. wide, the basal 
flexuous and usually narrower; panicle narrow, 4 to 6 cm. long, the 
branches scabrous-pubescent, appressed; spikelets 5- to 6-flowered; 
glumes equal, longer than the florets, faintly several-nerved, gradually 
acuminate, smooth except the sHghtly scabrous apex, about 15 mm. 
long; lemma villous on the rounded back, about 5 mm. long to the 
base of the awn, the lobes about 5 mm. long, abruptly narrowed into 
slender awns; awn of lemma about 10 mm. long, flat, loosely twisted 
in about 2 coils and brown at base, the upper portion slender, straight, 
divaricate. 
The type specimen in the U. S. National Herbarium, no. 733685, 
collected in the vicinity of Nanaimo, Vancouver Island, July 4, 1908, 
by John Macoun (no. 78825). 
Other vSpecimens in the U. S. National Herbarium are: Vancouver 
Island, Nanaimo, Macoun 39 in 1887, Summit of Mt. Benson, Macoun 
78823; Chilliwick Valley, B. C, Macoun 26080. 
This species resembles Danthonia intermedia Vasey in habit and 
inflorescence but differs in the villous lemma and the aristate teeth of 
the lobes. From D. thermale Scribn. it differs in its larger spikelets 
and villous sheaths. 
