46 TRIANDRIA. DIGYNIA. - 
than the calix, surrounded with a pubescence 
or long wool at the base, the dorsal valve with _ 
or without awn. : 
Flowers paniculate, panicles often contracted, some- 
times conglomerately lobed. Calix mostly acuminated, 
and exceeding the corolla. Glumes of the corolla of- 
ten lacerate, generally surrounded at the base with a 
woolly involucellum, sometimes merely pubescent near 
the base; the dorsal valve usually embracing the inner 
one, and awned very often below the summit. 
gia lh 
Spectres. 1. Mexicana. Panicle erect, capillary branch- 
ed, branches approximating, leaves glabrous, with a sca- 
‘brous margin; calix acuminate, nearly equal, much lon- 
ger than the corolla; valves of the corolla unequal, the 
- Inner valve embraced by the outer, very small, and lace- 
rate, the dorsal valve producing a strai ght awn from about 
the middle; woolly involucellum longer than the corolla. 
Oss. A grass abo:t 2 or 3-feet high, points of the calix 
bluish purple. This plant is described as destitute of an 
_ awn; the awn is indeed short and very slender, and rea- 
~ dily confounded with thelong wool arising from the base 
_ Of the corolla. Agrostis Mexicana? PEKsoon, Arunda 
ayrestoides. Pursu. 
2. Colorata, Sintuorp. Phalaris arundi 
—Arundee : Brit. Phalaris Americana? 
/ of Mr. ELzrort, who considering the 2 feathered ap- 
_-. - pendages at the base of the corolla (* basi penicillis duo- 
_ ~- bus lanz flosculo longé brevioribus.” Smiru.) as auxil- 
_ liary glames of the corolla, which probably they may be, 
_ Conceived it to be distinct from the European plant.— 
3. canadensis, (Arundo canadensiz. Mich.) As this is 
justly considered a dubious plant, I hope the reader will 
“nerve, the carina of both scabrous: valves of the corolla 
pos Diy a ey via a entire at the points, and 
= C ‘gin, the dorsal valve obscurely 5-nerv- 
_ ed; awned alittle belo, he summit; awn siraight, scarce- 
Wy hall the length of the valve; inner corolla glume nar- 
FO, sith a decp dorsal channel, near the base of which 
arises a supitate tuft of pappus, similar to that 
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