Gramme<^.-\ onxmrnjE. 407 



ieloT^UPAmcAC ^{"'''^^" terminal flower, mth or mthout a male or imperf eel flower 



y ^''*l"**®"- ^flowering glume and palea becoming hardened and endoaing the 

 gram after flowering. Two outer empty glumes nearly equal, compressed, keeled and longer 

 than the flowermg one. ffeKw*.— 1. Alopecurus. 



2. Panicese. Howering glume and palea becoming hardened and enclosing the grain 

 alter flowing. Outer empty glunies usuaUy unequal and smaller. Genera:— %. Paspa- 

 tUM; 3. ErioCHLOA; 4. PaNICUM; 5. GyMNOTHKIX: 6. ICHNANTHUS; 7. ISACHNE ; 



8. Spinifex; 9. Thouaejsa. 



3. Tristegineee. Spikdets nearly as in FanicecB, but usuaUy with a twisted awn as in 

 Andropogonea. Panicles loose. Ge»era.— 10. Aeundinella; 11. Garnotta; 12. Thy- 



SANOL-ENA. 



4. Andropogonese. Flowering glume small, exceedingly thin and transparent, with a 

 twisted awn rarely entirely wanting. Genera: — 13. Ophiurus; 14. Hemarthria; 15. 



PerOTIS; 16. ZOTSIA; 17. DiMBRIA; 18. ImPERATA; 19. SaCCHAROM; 20. EULALIA; 

 21. POLLINIA; 22. PoGONATHERUM ; 23. APOCOPIS ; 24. APLUDA; 25. AnDROPOGON; 



26. Heteropogon; 37. Chktsopogon; 28. Isoh^mum; 29. Spodiopogon. 



** SpiJcelets with one or more perfect flowers ; the male or rudimentary flowers, if any , 

 above the perfect ones, or the axis ending in a minute point (Po^ace^). 



5. Agrostideee. Spikelets l-flowered, usuaUy pedicellate and small. Howering glume 

 thin, awnless or with a simple awn. Grain free. — 30. Sporobolus; 81. Poltpogon. 



6. Stipacese. Spikelets l-flowered, usually pedicellate, and often rather large. Flower- 

 ing glume firm, with a simple or 3-cleft awn, articulate on the glume or with 3 or more awns, 

 and closely enveloping the grain. Gentis : — 32. Aristida. 



7. AmndineBe. Spikelets 1- or several-flowered, pedicellate, the rhachis with long hairs 

 between the glumes. Flowering glumes like the empty ones or thinner. Grain free. Genera : 

 — 33. Aeundo ; 34. Phragmites. 



8. Chlorideee. Spikelets 1- or several-flowered, sessile along one side of the simple 

 linear branches of a panicle (or of a simple spike). Genera : — 35. Miorochloa ; 36. Cr- 

 NOCON; 37. Daottlootenium ; 38. Eleusine, 89. Chloris; 40. Leptoohloa. 



9. Avenacese. Spikelets 2- or few-flowered, pedicellate. Flowering glumes usually 

 shorter than the outer ones, their awns often bent or twisted. Genus : — 41 . Avena. 



10. Festncacese. Spikelets several-flowered, pedicellate, glabrous between the glumes 

 or shortly hairy. Genera : — 42. Ccelachne ; 43. Eragrosiis ; 44. Lophatherum. 



11. Bambnsese. Spikelets 1- or several-flowered, usually sessile and clustered. Tall 

 shrubby or tree-like Grasses. Genera:— 4s^. Arundinaria ; 46. Bambusa; 47. Schizo- 



STACHYUM. 



1. ALOPECURTJS, Linn. 



Spikelets l-flowered, flat, and densely crowded into a cylindrical spike or 

 spike-like panicle. Outer glumes boat-shaped, with a prominent keel, but 

 not awned. Flowering glume shorter, with a very slender awn inserted on the 

 back (sometimes concealed under the outer glumes). Palea entirely wanting. 



A small genus, widely spread over the temperate and colder regions of both the northern 

 and southern hemispheres, only penetrating into the tropics among occasional weeds. 

 Outer glumes 3 lines long, united to the middle, glabrous or nearly so 1. A. agrestis. 

 Outer glumes not li lines long, free or scarcely united at the base, 



hairy on the keel 2. ^. geniculatas. 



1. A. agrestis, Unn. ; Kunth, Ennm. i. 23. An annual, 1 to 2 ft. 

 high, erect or slightly decumbent at the base. Leaves rather short, with long, 

 not very loose sheaths. Spike 2 to 3 in. long, the spikelets not so closely 



