(437) 
A new Trisetum from [lichigan. 
By Geo. V. Nasu. 
TRIisETUM BRITTONII sp. nov. 
A densely tufted perennial, with the numerous innovations 
one-third to one-half as long asthe culm. Culms erect, 
rigid, 2-3 dm. tall, villous toward the summit, leafless above ; 
culm-leaf 1, near the base of the culm; sheaths softly pu- 
bescent; ligule scarious, about 0.5 mm. long; blades erect, 
that on the culm 1-2 cm. long, about 2 mm. wide, flat, those 
on the innovations longer, usually 6-10 cm. long, stiff, in- 
volute, at least when dry, 1.5 mm. or less wide when spread 
out, rough above, densely hirsute beneath with spreading 
hairs; panicle long-exserted, dense and contracted, spike- 
like, 2-4 cm. long, 5-7 mm. wide, its branches less than 1 
cm. long, closely appressed; spikelets 4-4.5 mm. long, 
2-flowered ; empty scales acute, hispidulous on the midnerve 
above the middle, the first scale 1-nerved, about three-fourths 
as long as the 3-nerved second which is broadest at the mid- 
dle; flowering scales scabrous, acute, the first one 3.5-4.5 
mm. long, in sideview lanceolate and about 0.6 mm. wide, 
the hispidulous awn inserted about one-third way down, 2-2.5 
mm. long, finally recurved, the palet usually about five-sixths 
as long as the scale; second flowering scale much smaller, 
about one-half as long, empty, bearing an awn longer or 
shorter than itself. 
Collected by Dr. N. L. Britton, in whose honor I take 
pleasure in naming it, on Picnic Island, Marquette, Mich., 
July 19, 1883. Related to 7. swbspicatum (L.) Beauv., but 
clearly distinct, the numerous innovations with their stiff in- 
volute hairy leaf-blades and the narrow dense panicle with 
its short awns readily separating it. 
The Genus Bumelia in North America. 
By Joun K. SMALL. 
My attention was especially called to the genus Bumelya 
during the summer of 1895, while in southern Georgia. I 
then realized that an attempt to segregate the North American 
species by means of one or another of the published syste- 
