26 TRIANDRIA.— MONOGYNIA. 



Caps. 3-celled, many-seeded, opening at the angles ' 

 dissep. contrary. 



32. SISYRINCHIUM. Spath. 2-leaved. Cor. 6-petalled, 



flat, equal. Stam. cohering below. Stig. 3-cleft. Caps. 

 3-celled. 



* * * Flowers glumaceous. 



33. KYLLINGIA. Fl. distinct, disposed in a roundish, 



sessile, subimbricated spike. Cal. 2-valved, 1 -flower- 

 ed. Cor. 2-valved, longer than the calyx. 



34. SCIRPUS. Glum. 1-valved, 1 -flowered, imbricated 

 on all sides. Cor. 0. 



35. SCHCENUS. Glum, fascicled into a spike, paleace- 



ous ; the inferior ones empty. Cor. 0. Style decidu- 

 ous. Seed 1, (mostly naked at the base.) 



36. RHYNCHOSPORA. Glum, fascicled into a spike; 



the inferior ones empty. Cor. 0. Seed 1, crowned 

 with the persistent style ; base surrounded with 

 bristles. 



37. MARISCUS. Fl. distinct, in a somewhat imbricated 



spike. Cal. 2-valved, unequal, 3-flowered. Cor. 

 1-valved. Style 3-cleft. Seed triquetrous. 



38. DULICHIUM. Spikes somewhat racemose, axillary j 



spikelets linear-lanceolate^ rather compressed. Glum. 

 distichous, sheathing. Cor. 0. Style very long, bifid ; 

 base persistent. Seed with bristles at the base. 



39. CYPERUS. Spikelets compressed, distinct. Glum. 



imbricated in two rows. Cor. 0. Style deciduous. 

 Seed 1. naked. 



40. ERIOPHORUM. Glum. 1-valved, imbricated on all 



sides into a spike. Cor. 0. Seed surrounded with long 

 dense wool. 



11. FUIRENA. Glum, awned, imbricated on all sides into 



a spike. Cor. 3-valved, petaloid ; valves cordate, 

 awned, unguiculate. 



12. CENCHRUS. Involuc. laciniate, echinate, including 



about 2 spikelets. Cal. 2-valved, 2-flowered ; the 

 inferior fl. sterile, the other perfect. Cor. awnless. 

 Style 2-cleft. 



13. SPARTINA. Fl. in unilateral spikes, imbricated in 



2 rows. Cal. 2-valved, compressed, unequal. Cor. 

 2-valved, awnless, unequal. Nect. collateral. 



