58 33. Trasus. 9. CYPERACEAL Pl.end,ph» 
Root creeping; culm 12 in. high, angles acute; leaves 
upright, shorter than the culm ; bractece scarcely overtop- 
ping the culm, sheath very short or none ; male spike lan- 
ceolate, blunt ; glume lanceolate, brownish, rather pointed, 
rib green; fruit as long as the glume, closely napped ; nap 
first white, afterwards yellow. 
7. Trasus piluliferus . Pill sedge . 
Female spikes 2 or 3, close, elliptical, roundish ; fruit 
round, downy, beak short ; glumes oblong, acute, longer 
than the fruit ; culm lying down, serrulate. 
Gramen cyperoides spicis brevibus congestis, folio molli, Raii Syn. 421, 
polyst. 19. 
Gramen cyperoides tenuifolium, spicis ad summum caulem sessilibus 
globorum aemuiis. Rail Syn. 422, polyst. 20. 
Carex pilulifera, Lin. S. P. 1385. 
Carex montana, Lin . S. P. 1385. 
Carex filiformis, FI. Dan. 1048. 
Round-headed carex. 
Fields and pastures ; perennial ; May and June. 
Culm 9 in. long, acutely 3-sided, slender, weak ; leaves 
upright, bent back at top, light green ; bractece bristlelike, 
3-sided; male spikes lanceolate, slender, acute; female 
spikes 2 or 3, cylindrical, conglomerate, spreading ; glumes 
ovate, ferruginous, edge white, rib green ; fruit green, 
apex not notched. 
8. Trasus hirtus. Rough sedge . 
Male spikes 2; female 3, oblong, distant; lower one 
shortly footstalked ; fruit oblong, pointed, rough haired, 
apex 2-cusped ; glumes oblong, rough haired, awned ; awns 
very long ; leaves and sheaths roughhaired. 
Gramen cyperoides polystachium lanuginosum, Raii Syn. 418, polyst. 7. 
Carex hirta, Lin. S. P. 1389. 
Damp fields and marshes ; perennial; May and June. 
Root creeping widely; culm smooth, 2 feet high, upright, 
leafy; leaves upright, acute, downy on the upper face; 
sheath very roughly haired above ; bractece leaflike, as long 
as the spike; male spike lanceolate; glume ovate, brown, 
hairy, rib yellowish; glumes of the female spike bald, 
longawned, rib-green ; fruit ovate, ribbed. 
/3. glaber. Bald , sheath very slightly hairy ; fruit rough- 
haired. 
y. compositus. Male spikes 3 or 4 ; female branched ; 
spikelets 2 or 3, crowded, with a leaflike bractea at their 
bottom. 
