Caricog raphy: 281 
curved at the apex, entire at the orifice; pistillate scale 
ovate, acute, often slightly awned, tawny, green on the keel, 
and a little shorter than the fruit, though'variable in its length. 
Colour of the plant rather light glaucous green. : 
Flowers in May—grows in woods upon hills ; common, but 
not abundant. 
By Willd. the fruit of this species is called obovate, andit is 
so figured by Schk. I have not seen it obovate, although it 
approaches that form occasionally ; generally it is clearly, as 
described by Muh., ovate, triquetrous. In our woods it often 
attains a greater height than is mentioned by Muh., and the 
spikes are rather more remote. Pursh considered this plant 
the same asC. paupercula, Mx., which is probably not the. 
case. 
8. Van Vleckiit. Am. Journ. Vol. X. tab. F fig. 20. C. Van 
Vleckui, Schw. 
Spikes longer, fruit more remote, peduncles shorter, fruit 
smaller, and its scale about half its length. 
The specimens of this variety, received from Mr. Schwei- 
nitz, are exactly like those found here, which seem to be only 
a shorter and smaller variety of C. oligecarpa. 
31. C. Muskingumensis. Schw. An. Tab. 
arida, Schw. and Torrey no. 31. 
Spica composita; spiculis androgynis inferne staminiferis 
distigmaticis ovali-oblongis utrinque acutiusculis suboctonis 
approximatis; fructibus lanceolatis compressis nervosis ala- 
tis glabris acuminatis bidentatis, squama ovato-lanceolata 
plusquam duplo longioribus. 
Culm 20—-36 inches high, large, triquetrous, hollow, stri- 
ate, scabrous above; leaves linear-lanceolate, striate, sca- 
brous on the edge, about the length of the culm, shorter be- 
low, with striate sheaths ending in a membranous tawny 
border pointed downwards ; spike compound, composed of 
seven to ten spikelets, which are large, oval-oblong, some- 
what acute at both ends, staminate below, approximate, 
about half an inch long, dry and chaff-like, whitish tawny ; 
the lowest with a setaceous bract ovate at the base; stigmas 
two ; fruit lanceolate, three eighths of an inch long, compress- 
ed, narrow, very thin, distinctly winged, bidentate, scarcely 
scabrous on the edge even under the lens, nerved, acuminate $ 
Vou. X—No. 2, 38 
