-58 33. Trasus. 9. CYPERACE.E. Pl.e7id,pL 



Root creeping; ailm 12 in. high, angles acute; leaves 

 upright, shorter than the culm ; hractece 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 pilul'iferus. Pill sedge. 

 Female spikes 2 or 3, close, elliptical, roundish ; fridt 



round, downy, beak short ; glumes oblong, acute, longer 

 than the fruit ; culm lying down, serrulate. 



Gramen cypereides spicis brevibus congestis, folio molli, Raii Syn. 421 , 

 polyst. 19. 



Gramen cypereides tenuifolium, spicis ad summutn caulem sessilibus 

 globorum aerauiis, Raii Syn. 422, polyst, 20. 



Carex pilulifera, Lin. S. P. 1385. 



Carex montana, Lin. S. P. 1385. 



Carex filiformis, Fl. 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 ; hractece 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. TrasiLS hirtus. Rough sedge. 

 Male spikes 2 ; female 3, oblong, distant ; lower one 



shortly footstalked ; f-uit oblong, pointed, rough haired, 

 apex 2-cusped ; glumes oblong, rough haired, awned ; awns 

 very long ; leaves and sheaths roughhaired. 



Gramen cyperoides polystachium lanuginosura, Raii Syn. 418, polysf. 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 ; hracteoi leaflike, as long 

 as the spike; male spike lanceolate; glume ovate, brown, 

 hair3', rib yellowish ; glumes of the female spike bald, 

 longawned, rib-green ; fruit ovate, ribbed. 



/3. glaher. Bald^ sheath very s\\^i\y hairy ', fruit row^- 

 haired. 



y, co?npontus. Male spikes 3 or 4 ; female branched ; 

 spikelets 2 or 3, crowded, with a leaflike bractea at their 

 bottom. 



