1 1 6 Graminecz. 



Tribe I. Paniceae. — Fruiting glume coriaceous, usually hardening and 



enclosing the ripe grain ; hilum punctiform. 

 * Annual or perennial bisexual herbs. 



t Spikelets articulate on their persistent pedicels (obscurely in Chamce- 

 raphis). 

 § Spikelets not awned, except glume I of Panicum Crus-galli, and 

 Chamcer aphis, glume IV minutely awned in Pan. ambiguum, 

 setigerum, and javanicum), and in Eriochloa. 

 Glumes 3, I and II not separately deciduous. 



Spikelets not thickened at the base . 1. Paspalum. 

 Spikelets thickened at the base . . 2. Eriochloa. 

 Glumes 4, I and II separately deciduous . 3. Isachne. 

 Glumes 4, 1 and II not separately deciduous. 

 Branchlets of panicle not produced 

 beyond the spikelets (rarely in 

 Panicum plicatum). 

 Spikelets not involucelled by scabrid 

 bristles. 

 Glume IV sessile or subsessile . 4. Panicum. 

 Glume IV with a flattened stipes . 5. Ichnanthus. 

 Spikelets involucelled by scabrid 



bristles 6. Setaria. 



Branchlets of panicle produced beyond 



the terminal spikelets . . .7. Cham^eraphis. 

 §§ Spikelets awned (see exceptions under §). 



Palea of glume III very short, bifid . 8. AxoNOPUS. 

 Palea of glume III o, or entire . . 9. Oplismenus. 

 tt Spikelets persistent on their pedicels or 

 deciduous with them. 



Spikelets in fascicles involucelled by 



bristles 10. Pennisetum. 



Spikelets solitary on a flattened rhachis. 



Spikelets biseriate . . . .11. Stenotaphrum. 

 Spikelets uniseriate . . . .12. Thuarea. 

 ** Dioecious shrub 13. Spinifex. 



Tribe II. Arundinelleae.* — Spikelets panicled, articulate on their 

 pedicels, disarticulating or persistent, bisexual, 1-2-fld. ; glumes 4, 

 I and II often separately deciduous, I shortest, IV membranous, 

 1-3-awned, or awnless, not hardening in fr. ; stam. 3 ; hilum 

 punctiform 14. Arundinella. 



Tribe III. Oryzeae.t — Spikelets panicled, bisexual, i-fld. ; glumes 1-3, 

 palea 1-3-veined ; fruiting glume chartaceous or membranous ; 

 stamens 6; hilum linear. 

 Glumes 1-3, chartaceous, I and II often rudi- 

 mentary 15. Oryza. 



Glume solitary, membranous, awnless . . .16. LEERSIA. 

 Glume solitary, awned 17. Hygroryza. 



* I have adopted Dr. Stapf's name (in Flor. Capens.) for this Tribe, 

 that of Tristeginece being inapplicable, from the genus Tristegia having 

 been preceded by Melinis, Nees. Further, Aru?uii?iella is the dominant 

 genus of the Tribe. 



t I follow Bentham, Hackel, and Fl. B. Ind. in retaining this Tribe in 

 PanicacecB. Dr. Stapf has (Fl. Capens.) removed it to Poacecs and placed it 

 near Phalaridece, probably rightly. See remarks under Oryza in this work. 



