3 U 

 SYNOPSIS OF GENEBA. XV 



bracts ; the spikelets densely packed in many rows on a 

 thick spongy rachis. (Indian corn). 



Zea, p. 19. 

 TRIBE III. Oryzese.— Spikelets in panicles, not articulated 

 with the rachis. Pales 0. 



Glumes 2, lower one awned. Stamens 6. An aquatic 

 species, often floating on the surface of the water. 



Hygboehiza, p. 20. 

 Glumes 4, the two outer minute or setiform, the upper 

 inner ones (the pales of some authors) rigid, the outer 

 of which is sometimes awned. Stamens 6. (Bice). 

 (Vide Plate B., Fig. 7). 



Obyza, p. 20. 

 Glumes 2, membranous, not awned. Stamens 6 or fewer. 



Leeesia, p. 21. 



TRIBE IV. Tristegineae. — Spikelets jointed with the pedicel, 



hermaphrodite, solitary, in pairs, or fasciculate. [Flowering 



glumes hyaline or membranous, awnless or with a bent awn. 



Spikelets crowded or in fascicles along the branchlets of 



the panicle, 1-flowered. Glumes 4, the two lowest 



empty, pointed; the third one empty or enclosing a 



male floret. Glume of fertile floret with a twisted awn 



bent near the middle. 



Abundinella, p. 21. 

 Panicle loose, branches and pedicels slender. Glumes 

 4, the outer one with a ring of hairs at its base, second 

 silky hairy on the back and with a long slender awn 

 between the teeth, terminal one much shorter and 

 awnless. 



Ehynchelyteum, p. 21. 

 Spikelets very small, arranged in fascicles on the nu- 

 merous long branchlets of the large panicle. Glumes 

 4, not awned. A tall handsome grass with broad leaves. 



THYSAN0L2ENA, p. 21. 



TRIBE Y. Zoysiese. — Spikelets hermaphrodite, or a few of 

 them imperfect. Pedicels singly scattered or alternate along 

 thejnarticulate rachis of the spike. 



Spikelets in clusters of 3 — 5, arranged all round the 

 axis of the simple compact spike, the terminal one 

 sterile. Glumes 2 — 3, lowest one very small or want- 

 ing ; upper larger, stiff, and covered on the back with 



