319 



L. Splkeleta in open compound panicles, the branches not 

 spiciform. 



2. Coarse erect grasses ; flowering glume or rhachilla 

 long-pen icellate. 



3. Rhachilla short-hairy ; flowering glumes pen- 



icellate (59) Neyraudia 



3. Rhachilla penieellate ; flowering glumes 



glabrous (58) Phnti/mitc.s 



2. Usually slender grasses: rhachilla and flowering 

 glumes glabrous or hairy : if hairy, the hairs much 

 shorter than the glumes. 



8. Flowering glumes glabrous, 3-nerved (61) Kragrostia 



3. Flowering glumes glabrous or pubescent on 

 the nerves, 5 to many nerved. 



4. Flowering glumes 5-nerved. pilose on 



the nerves, not awned (64) I'ou 



4. Flowering glumes mucronate or 

 awned, rounded dorsally, 5-nerved ; 

 top of the ovary villous ; inflores- 

 cence paniculate (65) ISromus 



4. Flowering glumes many, awned or 

 mucronate, 7 to 9 nerved ; inflores- 

 cence spicate (66) Brachyfodium 



Tribe XII. HORDED. 



1. Glumes with their backs turned to the hollow surface of the 



rhachis ; maratime grasses (67) Mourrma 



1. Glumes with their sides turned to the hollowed surface of 



the rhachis; cultivated grasses (68) Tril iciim 



Tribe XIII. BAMBUSE^:. 



1. Fruit a true caryopsis with a delicate pericarp. 



2. Filaments free; palea of the upper flower 2-keeled.. (69) lidinbusa 



2. Filaments united into a tube: all the paleas 2- 



keeled ( 70) Oiffontochloa 



1. Fruit a nut with a thick free pericarp. 



2. Spikelets very small, ovate ( 72 ) Dinochloa 



2. Spikelets elongated, linear or linear- lanceolate (71) BchiMtttachyum 



Tribe I. MAYDE^. 



The staminate spikelets occupying the upper portion of the inflores- 

 cence or of its divisions, the pistillate below. Grain ellipsoid or roundish, 

 iinl'urrowed. Culms tall, with pith. 



(1) EUCHLAENA Schrad. 



Staminate spikelets in a terminal panicle, two at each joint of the 

 rhachis, one sessile, one pedicellate: glumes membranous. Pistillate 

 spikelets in 2-ranked spikes, the spikes fasciculate in the leaf-axils, the 

 axis jointed. Tall annuals with very broad leaves. 



Species 1 or 2, Mexican, 1 introduced into the Philippines. Teoeinte, 



(1) Euchlaena luxurians Schrad. hid. Sem. Bort. Gott. (18:52) ex Linnaea 

 8, Litterbl. 25; Fournier in Bull. Soc. Bot. Bel^f. 15: 4(i7 ; (ham. Mex. 6!); Curtis*' 

 Bot. Mag. t. (I'iI'i. 



Luzon, Province of Bataan, Lamao ( Whit ford ) , April. 1 !)04. 



Cultivated only; introduced from America in the year 1903; a native of Mexico. 



