72 MISC. PUBLICATION 243, U.S. DEPT. OF AGRICULTURE 
usually below the middle, the awn delicate and straight, or stouter 
and exserted, bent and sometimes twisted; palea shorter than the 
lemma. Slender perennials with small spikelets in open or narrow 
panicles. 
1. Calamagrostis leonardii Chase, Jour. Wash. 
Acad. Scie Miceid2 1, ho O27 lene 
Leonard 4325. 
Culms ascending from a geniculate base, 60 
to 100 cm tall, producing slender rhizomes; 
heule 3 to 4 mm long; blades lax, flat, 6 to 20 
cm long, 2 to 5 mm wide, scabrous; panicle 
pale, nodding, narrow but rather loose, 12 to 
20 cm long, the slender branches ascending, 
2 to 5 cm long; glumes 4.5 mm long, scabrous 
on the back and keel; lemma about 4 mm long, 
scabrous, the callus hairs copious, about half 
as long as the Jemma; awn from a little above 
the middle of the lemma, slender, divergent; 
somewhat flexuous at base, 4 to 5 mm long; 
palea about 3.5 mm long; rachilla joint about 
one-third the length of the lemma, long-pilose 
(fig. 40). 
Grassy places, 1,300 to 2,100 m, Hispaniola. 
Haiti: Pétionville, Ekman H 1113. Furcy, 
Leonard 4325, 4370. 
Dominican RepuBsuic: San José de Ocoa, 
Ekman H 11949. Sierra de los Comisarios, 
Ekman H 6812. Valle Nuevo, Ekman H 13809. 
35. AGROSTMS ES Spe Ek Gloire 
BENTGRASS 
Spikelets, 1-flowered, disarticulating above 
the glumes, the rachilla usually not prolonged; 
glumes equal or nearly so, acute, acuminate, 
or sometimes awn-pointed, carinate, usually 
scabrous on the keel, and sometimes on 
the back; lemma obtuse, usually shorter 
and thinner in texture than the 
glumes, awnless or dorsally 
awned, often hairy on the 
callus; palea usually shorter 
than the lemma, 2-nerved in only a few 
species, usually small and nerveless or 
obsolete. Mostly perennials, the small 
spikelets in open or narrow panicles. 
Palea present. 
Panicle contracted, somewhat lobed, the 
branches floriferous nearly to base; glumes 
scabrous on back and keels. 
. A, VERTICILLATA. 
Panicle open, the branches naked at base; 
FIGURE 40.—Calamagrostis leonardii. glumes scabrous only on keels. 
Panicle, X 1; spikelet, X 5 (type). 2. A. ALBA. 
