(1) Arthraxon microphyllus (Tiin.) Iloclist. in Flora 39 (]85(i) 189; Hack, 
in DC. Monog. I’lian. 6 ( 1880) 3.51; Fliilij). Jonm. Sci. 1 (1906) Snppl. 2(15; 
Hook, f FI. Frit. hid. 7 (1897) 147. A iidropo(/on microphi/llus Trin. Mem. Acad. 
St. Petersb. VI. 2 (1833) 275. 
Luzon, District of Lepanto, Mount Data (4485 iitcrriU) November, 1905: 
Province of Bengnet, Baguio to Ambuklao (43(13 Merrill) October, 1905; Suvoc 
to Pauai (4719 Merrill) November, 1905. 
British India to Ceylon and Tonkin. 
(2) Arthraxon ciliaris Beanv. Agrost. (1812) 111. /. //. f. 6 . subsp. langs- 
dorffii (Trin.) Hack, in DC. IMonog. I’lian. 6 (1889) 354; Pbiliji. .Journ. Sci. 
1 (1906) Suppl. 265; Kendle in Forbes & Hemsl .Journ. Ijinn. Soc. Bot. 3 6 (1904) 
360; Pilger in I’erk. Frag. FI. Philip. (1904) 139. Arthraxon ciliare F.-Vill. 
Nov. App. (1883) 315. 
Luzon, Province of Nueva Viscaya, (),uiaugan (102 Merrill) .Tune, 1902: Dis- 
trict of Jjepanto, Balili (4628 Merrill) November, 1905. jMinoan.vo, Lake Jjaiiao, 
Camp Keitliley (100 Clemens) January, 1906. 
Cbina. and Japan. 
Subsji. nudus (Nees) Hack, in DC. Monog. l^lian. 6 (1889) 356; Philip. 
.Journ. Sci. 1 (1906) Suppl. 266. 
J^uzoN, I’rovince of Bengnet, Ivabayan (4427 Merrill) October, 1905. 
British India. 
Subsp. quartinianus (A. Bicli.) Hack, in DC. Monog. Julian. 6 (1889) 365: 
I’liilip. .Journ. Sci. 1 (1906) Su])pl. 26(i. 
JjUZON, l^roviuce of Bengnet (4272, 4677, 4704 Merrill) ( Ictober-November, 
1905. 
(19) ANDROPOGON Linn. 
licjcvines solitaiy or in pairs, digitate or ])anicled. Hliacliis and callus 
of the first eni])ty ghiine usually hairy. Spikelets usually narrow, the 
pedicellate ones staniinate, empty or reduced to the pedicel, its flowering 
glume awnless, hut the first glume occasionally awned. 
A polyiuorpbous genus of about 200 species in all tropical and teinperate 
regions; 18 in the I’hilippines. 
1. Sessile spikelets of the lowest pairs in each raceme like those 
above as regards sex, form, and awns. (Series A. Isozyni.) 
2. Racemes slender, solitary, usually smooth, terminal, 
the thickened joints of the rhachis with a cup or 
tooth-like appendage at the apex. Flowering glume 
often cleft nearly to the base, awned from the 
cleft : second empty glume awnless. Slender 
grasses. (Subgenus Schizachyrium. ) 
3. Leaves obtuse ; 1 to 3 cm. long ; articulations 
and pedicels glabrous ; awn of the sessile 
spikelet 8 to 12 mm. long 
3. Leaves acute, 4 to 6 cm. long: pedicels fre- 
quently cillate ; awn of the sessile spikelet 16 
to 18 cm. long 
2. Like subgenus Scliizachyrium, but the spikelets 
laterally compressed, the second empty glume 
awned, the flowering glume slightly notched at the 
apex. (Subgenus Diectomis.) 
3. A rather coarse erect grass, the awns of the 
sessile spikelets 3 to 4 cm. long 
(1) ,4. hrevifoUus 
(2) A. frayiUs 
(3) A. fasHgiatus 
