821 



January, 1!)03: Pioviiu'c of Rizal, Bosoboso (185:5 Mcnill) April, 1!)08: Prov- 

 ince of Batangas, Lij)a (112 Marave) December, 1895: Province of Tayabas, 

 (Infanta) Binangonan (832 Whilford) September. ]!)04. Mindoro, Baco River 

 (2()3 Mcdrcf/or) April, 1905. Palawan. Tanabag- (323 Bcrmcjos) January, 190G. 

 Balabac (437 Manyuhal) March, 1!)()(>. Mindanao. Davao ((553 (JopcloHd) 

 March, 1!)04: Lake Lanao, Camp Keithley (52 CIcvicun) January, lOOfi. 



Widely distributed in the Philippines; warmer ])arts of the world. T., TUjbi. 

 Cudlasan; V., Adlay ; B., Gueklasan; Ig., Agda. 



Var. ma-yuen (Roman.) Stapf. in Hook. f. Fl. Brit. liid. 7 (18!»7) 100. 

 Coix ma-yuen Roman, in Bull. Soc. Acclim. Paris 111. 8 (1881) 442. 



Luzon, Province of Rizal, Montalban (3394 Ahern's collector) November, 1905. 

 JoLO, ]Momit Dajo (5326 Merrill) October, 1906. 



British India to Cochin China and Borneo. T.. Yhis. 



Tribe II. ANDROPOGONEiE. 



SjHkelets in spike-like racemes, two, rarely only one, at each joint of 

 the usually articulate rhachis, one sessile and one pedicellate. Spikelets 

 generally 1-flowered, with three empty glumes, the first empty glume 

 always more indurated than the flowering glume, the latter usually 

 hyaline and bearing a bent or twisted awn. 



(5) DIMERIA R. Br. 



Spikelets 1-llowered, linear, laterally compressed ; first empty glume 

 keeled. Flowering glumes awned. Spikes digitate. Very slender 

 grasses. 



Species 12, British India to South Cliina. Malaya and north Australia; one in 

 the Philippines. 



(1) Dimeria orinthopoda Trin. Fund. Agrost. (1820) 167. t. I'l, var. tenera 

 (Trin.) Hack, in DC. :\l()nog. Plian. 6 (1889) 81. Dimeria iencra Trin. in Mem. 

 Acad. St-Petersb. VI. 2 (1833) 335. F.-Vill. Nov. App. (1883) 315. D. orin- 

 thopoda Merr. Philip. Journ. 8ci. 1 (1906) Suppl. 25. 



Luzon, Province of Bataan, Lamao River (3283, 3773 Merrill) October, 1903, 

 January, 1904: Province of Rizal, Caloocan (3676 Merrill) November, 1903; 

 Antipolo {15 Foxicorthy) January, 1906. 



British India to Japan, Malaya, other varieties extending to tropical Australia. 



(F.-Villar enumerates UapUichne inlosissima Presl, and Andropogon cltloridi- 

 formis Gaudich., as distinct species, but without really crediting them to the 

 Philippines. Both are synonyms of Dimeria pilosissima Trin., a Marianne Island 

 species. ) 



(6) IMPERATA Cyr. 



Spikelets 1-flowered, densely clothed with long silky hairs. Empty 

 glumes meml^ranous, narrow, the two outer with long hairs. Flowering 

 glume small. Stamens 1 to 2. Panicles narrow, usually s[)ike-like. 



Species 5, tropical and subtropical regions of the World; two in the Philippines. 



1. Panicle narrow, spiciform, the branches short, appressed ; first glume 



5 to 9 nerved; stamens 2 (I)/- ciiJindrica 



1. Panicle thyrsiform, branches usually elongated, sometimes spreading ; 



first glume 3 to 5 nerved; stamens 1 (2) /. cxaltala 



