25. Second outer glume bearing, like the third, a long, twisted awn.--Species 1. German East Africa. =Acritochaete= Pilger Second outer glume unawned.--Species 220. Some (especially _P. miliaceum_ L., millet, and _P. sanguinale_ L.) are cultivated as cereals, others furnish vegetables, syrup, or fodder, or are used for plaiting-work or as ornamental plants. (Including _Axonopus_ Beauv., _Digitaria_ Pers., _Echinolaena_ Desv., _Sacciolepis_ Nash, and _Syntherisma_ Walt.) =Panicum= L. 26. (7.) Outer glumes 3, the lowest smaller than the others, the uppermost sometimes including a male flower. Rachis and branches of the inflorescence not jointed. [Tribe TRISTEGINEAE.] 27 Outer glumes 1-3; if 3, then the lowest larger than the uppermost. 30 27. Spikelets arranged in spikes. First and second outer glume minute, the third awned.--Species 3. Abyssinia. =Beckera= Fresen. Spikelets arranged in panicles. Second outer glume not very small. Flowering glume awnless. 28 28. Lowest outer glume minute, like the second awnless, the third more or less distinctly awned. Spikelets arranged singly along the branches of the panicle.--Species 1. Tropical and South-east Africa. Used as a fodder-grass. =Melinis= Beauv. Lowest outer glume not very small; the third awnless, rarely both the second and third awned. 29 29. Outer glumes, at least the second, awned. Spikelets arranged singly along the branches of the panicle. (See 24.) =Tricholaena= Schrad. Outer glumes awnless, the first and second about half the length of the third and the flowering glume. Spikelets in clusters along the branches of the panicle.--Species 2. West Africa and Mascarene Islands. Used as ornamental plants. =Thysanolaena= Nees 30. (26.) Flowers unisexual. Male and female spikelets in different inflorescences, or male spikelets in the upper, female in the lower portion of the inflorescence. [Tribe MAYDEAE.] 31 Flowers hermaphrodite or polygamous, rarely (_Andropogon_) unisexual, but then male and female spikelets in the same inflorescence and arranged in pairs, the male spikelets sometimes rudimentary. 33 31. Male spikelets in a terminal spike, the female at its base, enclosed singly or 2-3 together by a hardened globose bract. Style not very long, 2-cleft.--Species 1 (_C. Lacryma Jobi_ L., Job’s tears). North-west Africa, Madagascar and neighbouring islands. Used medicinally and for making ornamental articles and rosaries. =Coix= L. Male spikelets in spikes arranged in a terminal panicle, female in spikes or spadices with membranous bracts or spathes. Style very long, undivided or shortly 2-cleft. 32 32. Female spikelets in fascicled spikes with a jointed rachis. Style 2-cleft. Fruit enclosed when ripe in a cartilagineous case.--Species 1 (_E. mexicana_ Schrad., Teosinte), cultivated as an ornamental or fodder-plant. =Euchlaena= Schrad.