«94 l6. GRAMINEAE 



123. (94.) Spikelets i-flowered 124 



Spikelets 2- or more-flowered 153 



124. Outer glumes 4, rarely 3- Palea usually i-nerved. [Tribe PHALARI- 



DEAE.] 125 



Outer glumes 2, rarely i or none. Palea usually 2-nerved. [Tribe 

 AGROSTIDEAE.] 129 



125. Leaves lanceolate or elliptical, transversely veined. Spikelets in pairs 



on the branches of a panicle. Outer glumes 3. — Species 2. Madagascar. 



Poecilostachys Hack. 

 Leaves linear. Flowering glume awnless 126 



1:26. Upper two outer glumes, or at least the uppermost, larger than the lower. 

 Stamens 6, rarely 3. - — Specie.s 25. South and East Africa, Mascarene 



Islands, St. Helena Ehrharta Thunb. 



Upper two outer glumes smaller than the lower, more rarely equalling 

 them. Stamens 2 — 3 127 



T27. Upper two outer glumes awnless, smaller than the lower. Flowering glume 

 and palea hardening. Lodicules present. Stamens 3. — Species 10. 

 North, East, and South Africa. Some species are used as ornamental 

 grasses. The seeds of Ph. canariensis L. (Canary-seeds) are used as food 



and in medicine. Phalaris L. 



Upper two outer glumes awned ; lower two unequal. Flowering glume 

 and palea membranous. Lodicules none. Stamens 2. , . . 128 



128. Upper two outer glumes smaller than the lower. — Species 5, North-west 



and Central Africa. The vernal grass (.4. odoraimn L.) imparts a sweet 



scent to new-made hay Anthoxanthum L. 



Upper two outer glumes about as large as the lower. — Species 5. South 

 Africa and Madagascar. " Holygrass." [Ataxia R. Br., under Anthox- 

 anthum L.) Hierochloe Gmel. 



129. (124.) Stigmas shortly branched all round, protruding between the tips 



of the shghtly gaping glumes. [Subtribe phleinae.] . , . . 130 



Stigmas feathery, protruding above the base of the spikelet or enclosed in 



it 133 



130. Flowering glume rather stiff, allied or mucronate. Axis of the spikelet 



produced beyond the flower into a bristle usiially bearing an empty 



glume. — Species 2. South Africa Fingerhuthia Nees 



Flowering glume thinly membranous, unarmed. Axis of the spikelet 

 rarely produced beyond the flower into a bristle without empty 

 glumes 131 



131. Spikelets in slender simple spikes. Outer glumes obscurely keeled, 



unarmed. Flowering glume somewhat shorter than the outer. Leaves 



awl-shaped. — Species I. North-west Africa (Algeria). Mibora Adans. 



Spikelets in spike-like panicles. Outer glumes distinctly keeled. Leaves 



flat 132 



