30 TRIANDRIA, MONOGYNIA. 



Stem afoot or eighteen inches high. Leaves linear Ian- 

 ceolate. On the margins of rivulets, meadow-drains, and 

 ditches, in Jersey, common ; rather more rare this side of the 

 Delaware. Perennial. July, August. 



30. Mariscus. Vahl. enum. pi. 2. p. 372. ( Cyperoidex . ) 



Spikelets few- flowered, almost imbricately Ag- 

 gregated in roundish or subcylindric heads. 

 — Common calix of the spikelets 2-valved, 

 (3 to 6, or 8 flowered). Flowers 1 valved, 

 sub-imbricate. Style trifid. Seed trique- 

 trous. JVutt. 



echinatus. J. M. culm obtusely 3-angled, glabrous ; umbels 

 simple j heads globose ; spikes linear-lanceolate, 

 8-flowered, expanding. Elliot. 

 Schoenus umbellatus, Jacquin. collect. 1. p. 113. 

 Kvllingia ovularis, Mich. fl. am. 1. p. 29. 

 Scirpus echinatus, L. and Muhl. Cat. and Decrip. 

 Uber. 



Icon. Pluk. aim. t. 91. f. 4. Jacq. ic. rar. 1. t. 

 10? (Pursh) 



Rough Spiked Mariscus. 



From one to two feet high. In wet sandy fields, and on 

 sandy road-sides, in Jersey, not rare. Perennial. July. 



-etrofractus. 2. M. culm obtusely 3-angled, pubescent ; umbels 

 simple ; heads obovate j spikes subulate, 1 -flow- 

 ered, refiexed. Elliot, 

 Scripus retrofractus, Willd. sp. pi. 1. p. 304. 

 Icon. Pluk. aim. t. 415. f. 4. (Pursh.) 

 About a foot high. In cultivated fields, common. Peren- 

 nial. July. 



jiomeratus, 3. M. spikes cylindrical, imbricated backward, in- 

 volucrum many-kaved. Vahl. 

 Mariscus glomeratus, Bart. Prod. fl. Ph. p. 18. and 

 Muhl. MS. 



Scirpus cyperoides, Lin. Mant. 181 



. ? 



