40 TRIANDRIA.— MONOGYNIA, 



voluc. leafy, very long; panic, much divided ; spike* 

 small, ovate, woolly when ripe. 

 19. S. lineatus: culm triquetrous, leafy ; panicle termi- 

 nal and lateral, decompound, at length nodding ; 

 involucrum 1 — 2-leaved ; spikes ovate ; glumes 

 lanceolate, somewhat carinate ; bristles longer 

 than the seed. 

 HAB. Swamps. Aug. If.. Culm 2— 3 ft. high; leaves 

 subdistichous ; pan. at first erect; bristles inter* 

 woven. 



* * Seed naked at the base. 



f Style simple at the base, not articulated to the seed, 

 deciduous. 

 •0. S. subsquarrosus : culm triquetrous, nearly naked, 

 incurved ; spikes 3, nearly terminal, ovate ; glumes 

 somewhat squarrose at the tip ; involucrum 2- 

 leaved, very long, unequal. 

 HAB. Banks of rivers. Aug.©? Cespitose, about 

 2 in. high, almost setaceous; spikes turgid, crowded ,- 

 glum, ovate, carinate. 



21 . S. capillaris : culm nearly naked, triquetrous, ca- 



pillary ; spikes ovate ; 2-3 of them pedunculate, 

 with an intermediate sessile one. 

 HAB. Sandy fields. Aug. © ? A span high, cespi- 

 tose ; leaves setaceous, short, serrulate ; spikes 

 brownish, subumbellate. 



22. S. autumnalis: culm compressed, ancipitous ; umbel 



compound ; involucrum 2-leaved ; spikes lanceo- 

 late, acute, somewhat 4-sided. 

 HAB. Boggy grounds. July — Oct. If. Culm 8-12 

 in. high ; leaves long ; umbel loose ; glumes ovate f 

 mucronate, carinate. 



\ j Style bulbous and compressed at the base, ciliate on the 

 margin. 



23. S. ferrugineus: culm compressed, scabrous above ; 



involucrum unequally ciliate ; spikes lanceolate, 

 acute, nearly terete ; glumes pubescent. 

 HAB. In wet or dry situations. Aug. Culm 2 in. 

 — 2 ft. high ; leaves channelled, long ; umbel mostly 

 simple, with elongated rays; spikes brown. 



