324 



Britiab India to southern China, Malaya, easl Australia to Polynesia. Abun- 

 dant ami widely distributed in the Philippines. T.. Taldhib, 

 \'ar. luzonicum Hack, in DC. Monog. 1'han. 6 (1889) 116. 

 Luzon, (Chamisso) in herb, berol., fide Hack el. 

 Endemic. 



(3) Saccharum arundinaceum Retz. Obe. 6: 14: Hack, in DC. Monog. 1'han. 

 8 (1889) 117: Hook. f. PI, Brit Ind. 7 (1897) 119; Rendle in Forbes & Hemsl. 

 Journ. Linn. Soc. Bot. 36 (1904) :S4!>. Erianthua sp. Pilger in Perk. Frag. PI. 

 Philip. (1904) 137, 



MilTOOBO, Baco River (17!)4 Merrill) April, 1903. Mindanao. Province of 

 Burigao, Catel (5448 Merrill) October, 1906; Lake Lanao, Camp Keithley (!>7a 

 Clement) January, 1906, 



India and Ceylon to southern China. 



(!)) POLLINIA Tiiii. 



Racemes usually digitate, seldom arranged in panicles. First and 

 second empty glumes ehartaceous or membranous, the third hyaline. 

 Flowering glumes awned from the apex or from the cleft ; awns twisted 

 or oeniculate, rarely wanting. 



Species about 36, tropical and subtropical regions of the Old World; !) in the 

 Philippines. 



1. Spikelets clothed with silky hairs. (Subgenus Eim.ai.ia.) 

 2. Second glume awned. 



3. Awn 1 to 2 cm. long, short filiate or nearly glabrous 



on the twisted portion (1)/'. articulata 



3. Awn 8 to 5 cm. long, long i iliate-barbate on the 



twisted portion (2) P. irrilann 



2. Second glume muticous or mucronulate, not awned. 

 3. Hairs of the inflorescence white. 



4. First glume of the .sessile spikelet 4-nerved. (3) /'. quadrinervis 



4. First glume nerveless - (4) /'. argentea 



3. Hairs of the infloresi enee ferruginous. 



4. Culms pubescent below the inflorescence : 

 spikelets 4-5 mm. long ; awn of the fourth 

 glume 1 2—1 n nun. long: hairs of the inflo- 

 rescence ferruginous (5) /'. cwningii 



I. Culms glabrous below the inflorescence ; 

 spikelets 3.5 mm. long : awn of the fourth 

 glume 6 mm. long: hairs of the inflores- 

 cence cinereous-fulvous (<i) /'. muritimti 



1. Spikelets usually hairy only on the callus, rarely also on the 

 keels. (Subgenus Lkptathercm. ) 



2. Racemes exceeding 3 cm. in length : stamens 3. 



3. Third glume wanting, the fourth minute (10) P. sp. 



3. Third glume present. 



4. Articulations of the racemes pilose (7) /'. imberbit 



4. Articulations of the racemes glabrous or 



obscurely filiate (S) P. nuda 



2. Racemes less than 3 cm. long; stamens 1 (it) /'. tenuis 



(1) Pollinia articulata Trin. in Mem. Acad. St. Petefsb. IV. 4 (1836) !»(). 

 sul»s|). frag i I is var. setifolia Hack, in DC Monog. l'han. 6 (1889) 154; Pilger 

 in Perk. Frag, PI, Philip. (1904) 138. Pollinia aetifoHa Xees in Hook. Kew 

 Gard. Misc. 2 (1860) 88; Miq. Fl. Ind. Bat. 3 (1869) 531; F.-Vill. Nov. App, 



(1883) 315; Vidal Rev. PI. Vase. Filip. (1886) 290; l'han. Cuming. Philip. 



(1885) 158; Ceron, Cat, PI. Herb. (1892) 182. Pollinia articulata F.-Vill. 1. <•. 

 315, non Trjn. Andropogon koretrostaohys Trin. Mem, Acad. St. Pgtersb. VI. 2 



