Ord. 3.] TRIANDRIA MONOGYNIA. 15 



ranked, many-flowered. Leaves flat ; their edges and keel 

 rough. Seed with six bristles at the base. 

 Boggy mead. 2/ . 7. About \f. simple. Style perman. Stigm. decid. 



9. S. ritfus, Schcenus rnfus, 15. 1010. (Brown C.) Stem round, 



leafy at the base. Spikes aggregate, two-ranked, few-flowered. 



Leaves channelled, smooth, without a keel. Seed without bristles. 



Marshes in the W. 2f . 6, 7. Stems 4—6 in. Leaves 2. Style decid. 



*** Stem triangular. Panicle naked. 



10. S.triqueter, 24. 1694. (Triangular C.) Stem acutely triangular, 

 straight, naked, sharp-pointed. Spikes lateral ; sessile or stalked. 

 Stigmas two. Seed smooth. 



Banks of riv. near the sea. If . 8. Stem 3/., smooth, with 1 leaf. 



11. S.carindtus, 28. 1983. (Blunt-edged C.) Stem bluntly triangular 



upward, naked ; round at the base. Panicle cymose, terminal. 

 Bractea pungent, channelled, erect. Stigmas two. 

 Banks of riv. If. . 8. Root creeping. Stem roundish below. 

 Leaves 0. 



**** Stem triangular. Panicle leafy. 



12. S. maritimus, 8. 542. (Sea C.) Stem triangular. Panicle 

 terminal, leafy. Spikes conglomerate. Glumes torn, with an 

 intermediate point. Stigmas three. 



Salt marshes. If. 7, 8. Stem 1—3 /., roughish. Spikes few, 

 brown. Seed with 1 — 5 bristles. 



13. S. sylvdticus, 13.919. (Wood C.) Stem triangular, leafy. 

 Panicle terminal, leafy, cymose, repeatedly compound. Flower- 

 stalks sheathed at the base. Spikes aggregate. 



Moist shady woods. If. 7. StemSf, smooth. Spikes very numer., 

 small, dark green. Seed bristly at the base. 



26. ELEoCHARIS. Spike-rush. 



1. E. palustris, Scirpus palust. 2. 131. (Creeping S.) Stem round. 



Root creeping. Stigmas two. Seed lenticular, most convex at 

 one side. 

 Boggy ground. If. 6, 7. Stems erect. LeafO. Spike brown. 



2. E. midticdulis, S. mult. 17. 1187. (Many-stalked S.) Stem 



round. Root fibrous. Stigmas three. Seed, as well as the 

 permanent base of the style, acutely triangular. 

 Turfy bogs. If. 7. Stems spread. Spikes of a dark purplish brown. 



3. E. aciculdris, S. acic. 11. 749. (Least's.) Stem quadrangular. 



Stigmas three. Seed numerously furrowed, without bristles at 

 the base. Filaments permanent. 

 Moist heaths. If. 8. 2 — 6 in., very slender. Spikes small. 



27. ERIoPHORUM. Cotton-grass. 



* Spike solitary. 



1 . E. vaginatum, 13. 873. (Hare's-tail C.) Stem triangular above ; 



