338 PRAOTIOAL BOTANY. 



9. Fuirena, Rottbc&ll. Umbrella-Grass. Species : 



JPuireria squarrosa, Mx 



10. Psilocarya, Torr. Bald-Rush. Species : 



JPsilocarya scirpoides, Torr 



11. Dichromena, 'Ki.ch. Species: 



Dichromena leucocephala, Mx 



12. Ceratoschoenus, KTees. Horned Rush. Species 2. 



13. MhyncTiospora, Vahl. Beak-Rush. Species 10. 



14. Cladium, P. Browne. Twig-Rush. Species : 



Vladium mariscoides, Torr 



15. Scleria, L. Nut-Rush. Species 5. 



16. Carex, Sedge. Species 132. 



ORDER CXXXrV. 



GEAMINE^, OK GEASSES. 



Tribe I. Foacem, R. Br. 



1. Xeema, Solander. False Rice. White Grass. Species Z. 



2. Zizania, Gron. Water- or Indian-Rice. Species 2. 



3. Alopecurus, L. Fox-tail Grass. Species 3. 



4. Phleum, L. Cat's-tail Grass. Species 2. 



5. T^7/a, Adans, Beauv. Rush-Grass. Species 3, 



6. Sporolobus, R. Br. Drop-seed Grass. Species 5. 

 1. Affrostis, L. Bent-Grass, Species 6. 



8. Polypogon, Desf. Beard-Grass. Species : 



Polypogon Mbnspeliensis, Desf. 



9. Cinna, L. Wood Reed-Grass. Species : 



Cinna arundinacea, L. "Far. pendula. Gray. 



10. MuMenbergia, Schreb. Species 1. 



11. £rachyelytrum, ^eaxiv. Species: 



J3. aristatum, Beauv. {MuMenhergia aristata, Pers.) 



12. Calamagrostis, AAaxis, Reed Bent-Grass. 



(§ Galamagroatis, § CalamovUfa, and § J.OTmqpA«7a.) 



Species 1, 



13. Orysopsis, Mx. Mountain Rice. Species 3. 



14. Stipa, L. Feather-Grass. Species 3. 



15. Aristida, L. Triple-awned Grass. Species 7. 



