CLXXIII. GRAMINE^:. (J. D. Hooker.) 9 



Tribe X. HORDED. Spikelets 1- or more-fld., sessile, 1-2 or more seriate 

 on the rachis of a simple gpike, or partially sunk in cavities of the same ; 

 rachilla usually articulate and produced beyond the flg. gls. into a naked 

 or glumiferous bristle ; gls. awned or not, I and II opposite or subcollateral, 

 persistent or separately deciduous, I sometimes absent or very minute. 



Subtribe I. LOLIE^E. SpiJcelets solitary at the nodes of the spike ; plane 

 of the spikelets radial to the rachis. 



Spikelets 3- many-fld. ; gls. coriaceous, I absent, except in 



the terminal spikelet 125. LOLIUM. 



Spikelets 1-2-fld. ; gl. 1, minute or 0, II much longer 

 than the hyaline III ; spike cylindric, rachilla gla 

 brous 126. LEPTURUS. 



Spikelets 1-3-fld. ; gl. I, minute or 0, II about as long 



as the hyaline III; spike compressed, rachilla hairy . 127. OROPETIUM. 



Subtribe II. TRITICE.E. Spikelets solitary at the nodes of the spike ; 

 p)ane of spikelets tangential to the rachis. 



Fl. gls. 5-9-nerved, lateral nerves not conniving, short or 



ending in teeth or awns 128. TKITICUM. 



Fl. gls. 5-7 -nerved, lateral nerves conniving or confluent 



with the single terminal awn . . . . . 129. AGEOPYEUM. 



Subtribe III. ELYME^E. SpiJcelets 2 or more, collateral or fascicled at 

 the nodes of the spike ; plane of spikelets tangential to the rachis. 



Spikelets 1-fld. ; empty gl. subulate, rigid . . . 130. HORDEUM. 

 Spikelets 2- many-ttd. ; empty gl. subulate, linear or 



oblong 131. ELYMUS. 



Tribe XI. BAMBUSE^E. Shrubby or arboreous grasses. Leaves flat, 

 jointed on the sheath. SpiJcelets 1-oo-fld. ; lower 2- or more gls. empty, 

 gradually increasing in size up to the flowering, with sometimes small 

 terminal imperfect ones. Palea usually large, 2-keeled (in Melanocanna). 

 Lodicules usually 3. Stamens 3, 6, or oo. Styles 2-3. 



Subtribe I. ARUNDINARIE.E, Palea 2-keeled ; stamens usually 3 ; peri- 

 carp thin, adnate to the seed. 



Spikelets 1- many-fld., racemed or panicled ; empty gls. 



1-2 . 132. AEUNDINAEIA. 



Spikelets 1-4-fld., spicate ; spathes bracteate ; empty gls. 



2-3 133. PHYLLOSTACHYS. 



Subtribe II. EUBAMBUSE^E. Palea usually 2-keeled ; stamens 6 ; pericarp 

 thin, adnate to the seed. 



Filaments free ; paleas entire or slightly cleft, all 2-tfeeled 134. BAMBUSA. 

 Filaments free ; paleas ^deeply cleft, uppermost not keeled 135. THYESACANTHUS. 

 Filaments connate. Spikelets oo-fld.; paleas all 2-keeled 136. GIGANTOCHLOA. 

 Filametits connate. Spikelets few-fld. j palea of upper fl. 



or glume-like, not keeled . . . . . 137. OXYTENANTHEEA. 



Subtribe III. DENDROCALAME^E. Palea 2-keeled ; stamens 6 ; pericarp 

 fleshy or crustaceous ; seed free. 



Spikelets 2- oo-fld., 1 only usually fertile, usually capitate 

 in the branches of the panicle ; ovary hirsute at the 

 top, pericarp crustaceous 138. DENDKOCALAMUS. 



