428 MONOCOTYLEDONOUS PLANTS. 



8. SCH(ENUS. Linn. 



Glumes fascicled into a spike, the lower ones empty. Style 

 deciduous. Seed naked. Triandria. Monogynia. 



S. mariscoides Muhl. : culm terete or a little sulcate, leafy ; leaves 

 channelled, semiterete ; umbel terminal ; fascicles on spikes, 3 on. each 

 peduncle ; seed naked, rounded at the base. 



HAB. Bogs. Mass. Big. N..Y. Gray. Penn. Muhl. July. 

 1(. Culm 2 feet high, smooth or with rough dots. Spikes lan- 

 ceolate, brown. Style 2 3.-cleft. Bog Rush. 



9. RHYNCHOSPORA. VahL. 



Glumes fascicled into a spike, the lower ones empty. Seed 

 1, crowned with the persistent style; its base surrounded 

 with bristles. Triandria. Monogynia. 



* 



1. R. alba VahL : spikes in corymbose fascicles ; culm triangular 

 above ; leaves setaceous ; seed- somewhat lenticular ; bristles about 10. 

 Schanus atous Linn. 



HAB. Swamps and bogs. N. Y. to Car. July Sept. 21. 

 Culm 1218 inches high. -Fascicles axillary and terminal, pe- 

 ..,.," . duncled. Glumes nearly white, at length brownish. 



2. R.fusca VahL : culm triquetrous ; leaves linear, carinate ; fasci- 

 cles of spikes alternate, pedunculate ; spikes ovate ; glumes ovate, 

 brown ; seed ovate, with an acute black tubercle. Schanus fusctu>. 

 Linn. 



HAB. N. Y. Muhl. If. Culm 2 feet high. Leaves smooth. 

 Glumes mucronate. Seed brown, rugose, as long as the hispid 

 bristles. . ' 



3. R. glomerata Void. : spikes in corymbose fascicles, very distant, by 

 pairs ; culm obtusely triangular ; leaves flat ; seed obovate-cuneiform, 

 very smooth, as long as the tubercle. Schotnus glomeratus Linn. 



HAB. Swamps and bogs: N. J. to Car. July, Aug. Z. Culm, 

 12 18 inches high, smooth and leafy. Sptiits lanceolate. 

 Glumes brown. 



4. R. capillacca Torr. : spikes 3 5, nearly terminal ; culm trique- 

 trous, somewhat leafy ; leaves setaceous; seed stipitate, a little ru- 

 gose. Schanus setaceus Muhf. 



HAB. Sandy swamps. N. J. and- Penn. July. If. Culm 8 

 inches high, slender.. Spiltcs with a setaceous bract at base. 

 Glumes brown. Bristles 6, longer than the seed. 



5. R. sparsa VahL ; culm triquetrous, leafy ; corymbs axillary and 

 terminal, compound, loose ; peduncles capillary ; seed obovate, ru- 

 gose, much longer than the tubercle. Schanus sjmrsus Mich. Muhl. 



HAB. Wet grounds. Penn. to Car. July. U.Culm 2 feet 

 high. Flowers in spreading panicles. Glumes brown. Bristles 

 twice as long as the seed. 



