b • SCHOENUS. 



Habitat in spongiosis Pennsylvanige, floret Julio^ 

 Septembri. 



Rhynchosfiora alba, Vahl. 



3. SCHOENUS Fuscus. 



Culmo triquetro bipedali. 



Foliis linearibus glabris carinatis culmeis. 



Fasciculis alternis pedunculatis, spiculis ovatis 



bracteatis, bractea setacea spiculis longiore. 

 Squama ovata obtusa mucronata fusca. 

 Pistillum bifidum. 

 Semen ovatum fuscum rugosum, apicula acuta ni- 



grescente. 

 Setis fuscis semini gequalibus hispidis nec plumosis. 

 An 5. distans Michaux ? 



4. SCHOENUS SETACEus. 



Culmo triquetro palmari vel spithameo, subfoliato. 

 Foliis radicalibus et culmeis perpaucis setaceis. 

 Spiculis S — 5 lanceolatis fiiscis subterminalibus, 



bracteatis, bractea spicula longiore setacea. 

 Cal. glumsefuscse congestse l-valves lanceolatse mu- 



cronatse carinatse. 

 Stam. 3, alba. 



Pist. bifidum fuscupi persistens. 

 Semen stipitatum triquetrum, pistillo coronatum^ 



basi setosum, setis 6 hispidis, semine longiori- 



bus, subrugosum. 

 Habitat in uliginosis spongiosis, floret Julio. Penn- 



sylvania. 



