go l6. GRAMINEAE 



86. Spikelets 2-flowercd. Styles long. Outer glumes 2. Flowering glumes 



produced into 3 points. — Species i. North-west Africa (Algeria). 



(Including Kralikiella Coss. et Durieu). . Kralikia Coss. et Durieu 



Spikelets many-flowered. Styles very short Sj 



87. Outer glumes 2, awnless. Flowering glumes with 2 points and a dorsal 



awn. Lodicules 2-cleft. Fruit hairy at the top. — Species 2. North 

 Africa. (Including Meringurus Murbeck) . . . Gaudinia Beauv. 

 Outer glumes in the terminal spikelets 2, in the lateral single. Fruit 

 glabrous. — Species 6. North, South, and East Africa. Two species 

 (ray-grass) are cultivated on lawns ; one (the darnel, L. temulentum L.) 

 is poisonous. (Including Arthrochortus Lowe) .... Lolium L. 



88. Spikelets i-, very rarely 2-flowered, in a slender spike ; joints of the spike 



separating at maturity together with the lower spikelet. Outer glumes 



approximate in front. [Subtribe lepturinae.] 89 



Spikelets 2- to many-flowered, in usually stout spikes ; joints of the spike 

 separating at maturity together with the upper spikelet or not separating 

 at all. Outer glumes opposite one another. [Subtribe triticinae.] 90 



89. Outer glume I, very small. Flowering glumes awTied. Stamen i. Rachis 



of the spike with but slightly hollowed joints. — Species i. North-west 



Africa (Algeria) Psilurus Trin. 



Outer glumes 2, large. Flowering glumes awnless. — Species 4. North 

 Africa, Abyssinia, Socotra Lepturus R. Br. 



90. Flowering glumes decurrent into a callus limited by a furrow, falling with 



the fruit when ripe. Fruit adhering to the palea. ■ — -Species 7 North 

 Africa, Abyssinia, South Africa. The quitch grass {A. repens Beauv.) 

 is used for binding the sand, as fodder, for making syrup, and medi- 

 cinally. (Including Eremopyrum Jaub. et Spach) Agropyrum Gaertn. 

 Flowering glumes without a callus at the base, persisting at maturity. 

 Fruit free 91 



91. Outer glumes ovate, 3- to many-nerved. Fertile spikelets ventricose, 



2 — 5-flowered. Spike usually with a terminal spikelet. — Species 13 

 Ten species spontaneous in North Africa and Abyssinia, the others 

 (especially the wheat, T. sativum Lam. and poloniciim L.) cultivated 

 in various regions. The latter are used as cereals and for plaiting-work, 

 other species as ornamental plants, (Including Acgilops L.) 



Triticum L. 



Outer glumes oblong lanceolate or subulate, i — 2-nerved. Spikelets not 



ventricose, 2-, rarely 3-flowered. Spike without a terminal spikelet. 92 



92. Outer glumes truncate, two-keeled, with a long awn. Flowering glumes 



awned from below the tip. Spike very dense. — Species 2. North-west 



Africa. Haynaldia Schur 



Outer glumes acuminate, one-nerved. Flowering glumes awned from the 

 tip. Spike rather loose. — Species 3. North Africa, Abyssinia, and 



