CLASS III. ORDER I. n 



lh« divisions : capsule G-celled, many-seeded, gap- 

 ing at the angles. 3. 1 — reniformis, leaves round- 

 cordate ; spathe. 2/ . w. 



Xyris. Calyx, glume 2-valved, in a head ; co- 

 rol 3-petalled, equal, cvenate : capsule 3-vaIved, 

 many-seeded, 6. 13 — ance/iS) (yellow-eyed grass) 

 culm 2-edged. 2/ . y. 



C. Flowers grassy : valves of the calyx glume*- 

 like : corol none. 



ScHOENXjs. Spikelets sub-convolute, acute y. 

 scales heaped in fascicles, outer ones dry, shining : 

 corol : seed 1, roundish, naked or surrounded 

 with bristles. 3. 9 — albus, (bog-rush) leaves bristle-- 

 form. 'U^glomeratusj \edL\es fi^t. 1^. 



Cyperus. Glumes chaffy, scales imbricated 2- 

 ways : seed single, beardless : spikelets compress- 

 ed. 3.9 — s^iathaceusy (galingale) axillary racemes. 

 ^~~^otunduSi umbel doubly-compound. IJ., 



SciRPUs. Glumes chaffy, scales imbricated eve*- 

 ry way: seed single, naked, surrounded with hairs 

 or bristles. 3. 9 — macrostachius^ (club-rush) panicle 

 clustered, leafy, terminal. Ij. — triqueter, spikelets 

 lateral, sessile, bunched. % — retrofractus, umbels 

 simple. 2/ — acutusy culm round, very tall. 2/. 



Eriophorum. Glume chaffy, imbricated every- 

 way : seed beset round with very long dense wool- 

 ly hairs. 3.9 — cy/ierinum J (cotton grass) panicles 

 thrice-compound, one growing from the top of 

 another, ll^—^ngustiffjlium^ leaves channelled, tri- 

 angular at top — polystachiunij leaves flat, spikes 

 pedun^d. X* 



Trichophorum. Calyx, scales imbricated eve- 

 ry way : seed beset with capillary bristles, which 

 at length project out, always 6 in number : spike- 

 lets ovatish. 3. 9 — eriophorum^ (light-hair) culjn 

 leafy ; spike crowded. 



B 2 



