,548 MONOECIA.— TRIANDRIA. 



cylindrical, short pedunculate, erect; fruit sub' 

 globose, inflated, rostrate, bifurcate, longer than 

 the lanceolate glume ; culm obtusely triangular. 

 HAB. Wet meadows. In N. America ? 



«j3. C. retrorsa : sterile spikes about 3, lower one of- 

 ten fertile at the base ; fertile spikes about 5, ap- 

 proximate, (and clustered in a subcorymbose man- 

 ner,) oblong-cylindrical, inclusely pedunculate, 

 lowest one often remote ; fruit ovate, inflated, re- 

 flexed, rostrate, half as long as the lanceolate 

 glume. 

 HAB. Borders of ponds. Culm 2 ft. high; fert. 

 spik. thick, dense. 



84. C. Schweinitzii : sterile spikes 2, upper one elon- 

 gate, pedunculate ; fertile 3, oblong-cylindrical, 

 subpendulous, rather remote, inclusely peduncu- 

 late ; fruit oblong-ovate, acuminate-rostrate, in- 

 flated, bifurcate, longer than the lanceolate attenu- 

 ate glume. 

 HAB. Wet sandy soil. June. Culm 12 in. high ; 

 spik. light straw-colour. 



U5. Cbullata: sterile spikes 3 ; fertile 2, oblong- 

 cylindrical, rather loose, exsertly pedunculate and 

 somewhat nodding, distant ; fruit ovate-globose, 

 inflated, erect, smooth, costate, rostrate-acumi- 

 nate, orifice bifid, twice as long as the lanceolate 

 glume. 

 HAB. Bogs. Culm \8— 24 in. high, slend. ; fert. 

 spik. remote, few-Jim 



l;6. C. pellita : sterile spikes 2, oblong ; fertile 2, cy- 

 lindrical, remote, erect, upper one sessile ; fruit 

 ovate, subtriquetrous, short-rostrate, hairy, bicus- 

 pidate, equal to the oblong awned glume. 

 HAB. Wet meadows. May. Culm 2i Jt. high: 

 leav. subrigid, flat. 



87. C. lacustris : sterile spikes about 4 ; fertile 2 — 3, 

 erect, oblong-cylindrical, short pedunculate ; fruit 

 oblong, many-nerved, subrostrate, smooth, bifur^ 

 cate, somewhat longer than the oblong mucronate 

 glume. 

 HAB. Deep swamps. June. Culm 3 — 5ft. high, 

 leav. broad: fr. brown* 

 38. C. longirostris : sterile spikes *% short : fertile S 1 ^ 



