17*2 MONOCOTYLEDONS. CYPERACEJE. 



3 flowers which are longer than the very unequal valves of the 

 glume, root creeping, p. 44. Pastures. 



26. CYNOSURUS. 



Glume bivalved, 2 5 -flowered, having a pectinated mvolucrum. 

 Perianthwith linear lanceolate valves; ext. awnless or awned 

 below the extremity. Caryopsls incorporated with the perianth. 



1. C. cristatus, raceme spiked linear, florets with a very short 

 awn. p. 39. Pastures. 



ORDER II. CYPERACEJE. Juss. Br. 



Flowers supported by a chaffy scale (glume). Perianth none, or 

 composed of bristles, rarely a membrane, 1 3-leaved. Stam. 

 hypogynous, generally 3. Anthers inserted by their base. 

 Ovary superior, with one erect Ovule. Style single, generally 

 trifid, rarely bifid. Stigmas entire. Achenium crustaceous 

 or bony. Embryo lenticular, inclosed in the base of a copious 

 albumen. Plumule included in the substance of the Embryo. 

 Stems slender or triangular; sometimes with an indefinite 

 number of angles, usually without joints, sometimes jointed 

 and branched. Leaves with an entire sheath 9 which is some- 

 times fissile when old : the floral ones generally destitute of 

 sheath. Scales disposed in spikes, those at the bottom with- 

 out flowers. Br. 



1. ERIOPHORUM. 



Scales imbricating the spike on all sides. Achenium with very 

 long silky hairs springing from the base. 

 * Spike solitary. 

 f Culm naked. 



1. E. alpinum, culm triangular, leaves much shorter than the 

 sheaths, spike oblongo-ovate. p. 20. Alps. 



ft Culm leaf-bearing. 



2. E. vagi?iatum, culm above triangular, spike ovate, p. 20. 

 Bogs. 



3. E. capitatum, culm rounded to the top, spike nearly sphse- 

 rical. p. 20. Alps, rare. 



** Spikes many on a culm, pedunculated. 



4. E. gracile, culms trigonous channelled, spikes longer than 

 the involucre, p. 20. Alps. 



5. E. ttnguslifolhim, culms subtrigonous, leaves linear grooved, 

 involucre longer than the flowering spikes. /;. 21. Bogs. 



6. E. poly stacfiy on, culms trigonous, leaves broadly linear plane, 

 involucrum longer than the flowering spikes, p. 21. Bogs. 



