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third or less of their length, vanishing at or just below the 
margin, the midnerve glabrous, or pilose toward the base, the 
remainder, as well as the awn which is 0.2 mm. long or less, 
hispidulous ; palet about as long as the body of the scale, the 
internerve about 0.75 mm. broad and elliptic when spread 
= the infolded margins glabrous: stamens elliptic, 0.6 mm. 
long: grain (not ee mature) brown, about 1.5 mm. long, 
elliptic, compresse 
Marshes, eee to Texas. Very distinct from the 
other members of this genus and readily recognized. The 
following specimens are referred here: 
Louistana: Hale, several sheets, the type in my own her- 
barium from the Gray Herbarium, labeled ‘‘ Leptochloa_fascz- 
cularts var.” 
Texas: Drummond, no. 322. 
Tricuspis LANGLOISII. 
Smooth and glabrous throughout, with the exceptions 
noted below. Culms tufted, 5-15 dm. tall, erect, round; 
nodes 2 or 3: basal leaves rather ee their sheaths 
crowded, equitant, and shining; culm leaves 2 or 3; sheaths 
coarsely striate, much shorter than the internodes, often pilose 
at the apex; ligule a ring of copious silvery hairs about 1 mm. 
long; blades erect or ascending, flat, sometimes folded when 
dry, glaucous and minutely pubescent on the upper surface, 
long-acuminate, the basal 2-4 dm. long and 2.5~5 mm. wide, 
the lower culm blade 7-15 cm. long and 2-3.5 mm. broad, 
the upper blade much smaller, 2 cm. or less long: panicle 
narrow, I~2 dm. long, about 2 cm. broad, its triangular 
branches arranged singly, rarely in pairs, erect or nearly so, 
the larger 6-10 cm. long and usually subdivided: spikelets 
6-7 mm. long, oval when mature, appressed to the branches, 
on stout pedicels about 1 mm. long: scales 6-8, the outer 
empty 2 acute, 1-nerved, or the second rarely 3- -nerved, the 
first narrower than and about three-quarters as long as the 
second which is 3.5-4 mm. long; flowering scales elliptic, 
3-nerved, the nerves excurrent as short points, pilose for the 
lower half with ascending hairs about 0.5 mm. long, the callus 
pilose, the lower scales about 4 mm. long and 2.25 mm. wide 
when spread out; palet as long as or a little shorter than the 
scale, 2-nerved, the nerves ciliate and about equally curved 
at the base and the apex, hence the internerve elliptic or 
