370 Nash : Enumeration of the 



Flowering scale and palet membranous. 



Inflorescence spicate. Tribe III. Zoysieae. 



Inflorescence paniculate. Tribe IV. Tristegineae. 



Flowering scale and palet chartaceous, cartilaginous or coriaceous, very 

 different in appearance from the remaining scales. 



Tribe V. Paniceae. 

 Spikelets much compressed laterally : hiluni linear. Tribe VI. Oryzeae. 

 B. Spikelets with the empty scales persistent, the rachilla hence articulated above them, 

 l-many-flowered : internodes of the rachilla of spikelets of 2 or more flowers long 

 and readily measurable. 

 Stems herbaceous (except in one species of /'a«^Vw;«) : leaf-blade sessile, not articu- 

 lated with the sheath. 

 Spikelets borne in open or spike-like panicles or racemes, usually upon distinct 

 and often long pedicels. 

 Spikelets i-flowered. Tribe VII, Agrostideae. 



Spikelets 2-many -flowered. Tribe IX. Festuceae. 



Spikelets borne in two rows, on short equal pedicels or sessile. 



Tribe VIII. Chlokideae. 

 Stems woody : leaf-blade with a petiole-like base which is articulated with the 

 sheath. Tribe X. Bamisuseae. 



Tribe I. Maydeae 



A tall stout grass with the pibtillnte spikelets enclosed in a globose white bead-like 

 organ. I- Coix. 



Tribe II. Andropogoneae 



First scale of the spikelet globose, rugose: racemes not hairy. 2. Hackelochloa. 



Scales of the spikelet long, flat or convex : racemes hairy. 

 Racemes singly disposed. 



Second scale of the sessile spikelet awnless : pedicellate spikelet smaller than 



the sessile one. 3- Schiziuhyiium. 



Second scale of the sessile spikelet awned : pedicellate spikelet larger than the 

 sessile one. 4- Diedoniis. 



Racemes in pairs, or sometimes 3's-5's. 5. Andropogon. 



Tribe III. Zoysieae 

 A low grass with a narrow spike-like inflorescence. 6. Anthephora, 



Tribe IV. Tristegineae 

 A tall grass with a large panicle of awned spikelets. 7. Arundinclla. 



Tribe V. Paniceae 



I. Spikelets all perfect : leaf- blades sessile. 

 a. Spikelets not sunken in the rachis. 

 * Spikelets naked, not involucrate. 

 Scales 3. 



Lowest scale with a thickened ring-like callus. S. Monachne. 

 ' Lowest scale unappendaged. 



Flowering scale with its opening turned from the rachis. 



9. Paspalum. 



