SYNOPSIS OF THE GENEKA. 



7. ScH^i'Nus^ [Page 46.] S/jiAre/e/s one to three-flowered. Glumes 



two, raukctl, tlie outer ones smaller, barren. Bristles very 

 small, or none. Style jointed, or deciduous. 



8. Khynchos'iora, [Page 46.] Spi^We/sfew-flowered. Glumes ot 



one valve, imbricated on all sides, the outer ones smaller, 

 barren. Bristles various in number, spiny, and shorter 

 than the glumes. Style bifid, dilated at the base, more or 

 less articulated, persistent, and crowning ihe/ruit. 



9. SciR'PUS, [Page 48.] Glumes of one valve, imbricated on all 



sides, the enter ones sometimes barren. Bristles some- 

 times wanting. Style simple, deciduous. Fruit termi- 

 nating in a point. 



10. Eleo'charis, [Page 52.] SpiA:* terminal, solitary. Glufnes 



of one valve, imbricated on all sides, mostly all fertile. 

 Bristles four to twelve, finely toothed, rarely absent. Style 

 dilated at the base, and jointed upon the germen. Stiymas 

 two or three. Fruit lenticular or triangular, crowned by 

 the indurated base of the style. Stem erect, simple, 

 sheathed at the base. 



11. Elio'geton, [Page 54.] [Spike terminal. Glumes liearly 



equal, of one valve, imbricated on all sides, all fertile. 

 Bristles absent. Style deciduous. Fruit tipped with a 

 short point. 



12. Blts'mus, [Page 55.] S/JiAre terminal, compressed. Spikelcts 



bracteated, arranged in a distichous manner on a slightly 

 zig-zag rachis. Glumes of one valve, imbricated on all 

 sides, outer ones the largest, barren. Bristles often absent. 

 Friiit compressed, terminated by the tapering persistent 

 style. 



13. Eriopho'rum, [Page 56.'] Spikes terminal, solitary or nu- 



merous. Glumes of one valve, imbricated on all sides, 

 nearly equal. Style deciduous. Stigmas three. Fruit 

 witli very long silky hairs sjiringing from the base. 



14. Nau'dus, [Page 61.] Glumes wanting. Glumelles two an- 



equal lanceolate valves, the outer one the largest. 



Order II. Digynia. — 2 Pistils. 



* Flowers paniclcd ; {compact, appearing like a spike, or spreading.) 



•j- Spikelcts singlc-Jlowercd. 

 15. Alopecu'rIjs, [Page 74.] Panicle spiked. Glumes of two 



