trex.} CYPERACE.E, 325 



Schcenus, as is the fruit. Plant three to five feet high, leafy. Leaves 

 rough, almost prickly at the margin and keel. Glumes ovate, brown, 

 six to seven in an ovate spikelet ; inner ones the longest, generally the 

 two or sometimes three innermost ones floriferous. Stigmas generally 

 two. 



8. CAREX. Linn. Carex or Sedge. 



flowers collected into an imbricated spike. Calyx (as it is 

 usually called), a scale. Barren fl. Corolla none. Fertile fl. 

 Corolla of one piece, urceolate, swollen. Stigmas 2 3. Nut 

 triquetrous, included within the persistent corolla, (which is 

 thus considered to form part of the fruit.) Name ; supposed 

 to be derived from Keipw, to shear or cut, in allusion to its 

 sharp leaves and steins. Moncecia. Triandria. 



# Spikes simple, solitary. 



1. C. dioica y Linn. Creeping separate-headed Carex. Spike 

 simple, dioecious ; fruit mostly ascending, ovate, shortly acumi- 

 nated, rough at the margin upwards ; leaves and stem smoothish; 

 root creeping. Br. FL ed. 3. p. 392. E. Fl. v. iv. p. 77. E. 

 Bot. t. 543. 



Spongy bogs, not unfrequent. Fl. May, June. %. A span high. 

 Stigmas two. 



2. C. Davalliana, Sm. Prickly separate-headed Carex. 

 Spike simple, dioecious ; fruit ovate, much acuminated, recur- 

 vato-deflexed, rough at the margins upwards ; leaves and stem 

 rough; root tufted. Br. Fl. ed. 3. p. 392. E. FL v. iv.;?. 78. 

 E. Bot. t. 2123. 



Subalpine bogs ? rare. County of Down ; Mr. Templeton. Fl. 

 June. 1. A span to a foot high, much resembling the last, which, as 

 Doctor Hooker states, is probably sometimes mistaken for it. 



3. C. pulicaris, Linn. Flea Carex. Spike simple, upper 

 half with barren flowers ; fruit lax, oblongo-lanceolate, acumi- 

 nate, reflexed ; stigmas two. Br. Fl. ed. 3. p. 392. E. Fl. v. iv. 

 p. 78. E. Bot. t. 1051. 



Bogs, frequent. Fl. May, June. !. A span high. Stems smooth. 

 Leaves, as in all this division, setaceous or filiform. Fruit dark brown, 

 shining, smooth. 



* * Spikelets aggregated, their uppermost flowers mostly 

 sterile. Stigmas two. 



4. C. arenaria, Linn. Sea Carex. Lower spikelets fertile, 

 upper ones sterile, all crowded into an oblong interrupted head ; 

 fruit with a membranous margin, shorter than the calyx ; brae- 

 teas membranaceous, lower ones somewhat leafy ; stem trian- 



