(156 ) 
wide, those on the innovations narrower and longer: panicle 
contracted, strict, 4-5 cm. long, 1-1.5 cm. thick, its axis and 
appressed branches pubescent with long hairs, the branches 
spikelet-bearing to the base, the larger ones 1-1.5 cm. long: 
spikelets 6-7 mm. long, crowded, 2—3-flowered ; empty scales 
brownish or yellowish brown, strongly hispidulous on the 
keel, sparingly so on the surface, the midnerve excurrent in 
a short point, the first scale 1-nerved, the second 3-nerved ; 
flowering scales strongly hispidulous, not exserted, the callus 
pubescent with hairs about 0.25 mm. long, acute, shortly 2- 
toothed at the apex, the teeth awn-pointed, the awn inserted 
about one-third way down, stout, hispidulous, finally strongly 
reflexed, about the length of the scale; palet about four-fifths 
as long as the scale, 2-toothed at the apex. 
On steep open hillsides, Skagway, August 28, 1899 
(Williams). Related to 7. swbspicatum (L.) Beauv., but the 
larger spikelets with their included flowering scales at once 
distinguish it from.any form of that species. 
Trisetum subspicatum (L.) Beauv. Dawson (Williams). 
Trisetum subspicatum molle (Michx.) A. Gray. Summit 
of White Pass (Williams) ; Ft. Selkirk (Tarleton). 
Trisetum sp. Five-finger Rapids, Aug. 21, 1899 (Wil- 
liams). This is probably undescribed, but the parts of the 
spikelets are so abnormally large, owing to its infestation by 
nematode worms, that its description as new is not war- 
ranted. 
Avena sativa L. Dawson. Introduced (Williams). 
Poa arctica R. Br. Klondike Bottom (Williams). 
Poa nemoralts L. Dawson (Williams). 
Poa nemoralis L.. ? Dawson (Williams). 
Poa nemoralis L.? Five-finger Rapids (Tarleton). 
Poa pratensis L. Rink Rapids (Williams). 
Poa Witutamsit Nash, sp. nov. 
A tufted smooth and glabrous perennial, the innovations 
apparently intravaginal and much shorter than the culm. 
Culms 1.5-2 dm. tall, erect or ascending: leaves I or 2; 
sheaths striate; ligule scarious, about 2.5 mm. long; blades 
erect, about 2 mm. wide, acuminate, those on the culm 2-4 
cm. long, those on the innovations sometimes longer: panicle 
