MONOECIA TRIANDRIA. 
525 
valved, the valves compressed, hairy along the midrib, conspicuous when 
young almost concealing the fertile florets; corolla two-valved, valves very 
minute, slender; of the stamen, styles, or nectary, scarcely a vestige. Fer- 
tile florets sessile, two-valved, exterior valve orbicular, cartilaginous, entire, 
(not emarginate at the sides,) corrugated by irregular transverse ridges, the 
interior oblong, firmly attached to the rachis; corolla two-valved, valves 
equal, membranaceous; nectary one? leaved, very small; stamens three, ex- 
serted; styles two; stigmas feathered. Seed one, round, enveloped by the 
persistent calyx. 
It appears to me somewhat doubtful whether this plant and the M. Myu- 
rus of India are really congeners. 
I am not certain whether this plant is really indigenous, or has been intro- 
duced from the West Indies. I have only seen it around Charleston, where* 
however, it is very common in dry pastures. 
Flowers August — October. 
CAREX. 
Amentum imbrica- 
tura. Masculi: Calyx 
squama. Corolla 0. 
Foeminei: Calyx 
squama. Corolla mo- 
nopetala, ventricosa, 
bidentata, persistens. 
Stigmata 2 — 3. Se- 
men triquetrum, inclu- 
sum. 
^ 1. Stigmatibus 2. | 
* Spicis dioicis. | 
1. Sterilis. 
C. spicis subsenis; 
fructibus ovatis, com- 
presso triquetris, acu- 
minatis, apice recurvis, 
bicuspidatis, margine 
ciliato serratis. 
Gen. Pe. 1407. 
Ament imbricated. 
Male jlorets: Calyx a 
scale. Corolla 0. 
Female: Calyx a 
scale. Corolla 1-pe- 
talled, ventricose, 2- 
toothed, persistent. 
Stigmas 2 or 3. Seed 
triquetrous, inclosed. 
§ 1. Stigmas 2. 
* Spikes dioecious . 
Spikes generally 6; 
fruit ovate, compress- 
ed, triquetrous, acumi- 
nate, recurved at the 
point, two-pointed, cili- 
ate serrate along the 
margin. 
