Var. vulpina (Anilerss.) Hack, in DC. Monog. Plian. 6 (1889) 073; Pilger in 
Perk. Frag. FI. Pliilip. (1904) 140. AntltisHria vulpina Anilerss. Nov. Act. 
Upsal. 111. 2 (1850) 423. Anthistiria arnndinacea Rolfe in Journ. Bot. 23 
(1885) 210; Vidal Phan. Cuming. Philip. (1885) 159; Rev. PI. Vase. Filip. 
(1880) 292; Ceron Cat. PL Herb. (1892) 184. 
Philippines (1272 Cuming). Luzon, Province of Pangasinan, Rosales (202 
Merrill) May, 1902. 
Philippines and British India. 
Subsp. intermedia Hack. var. dubia Hack, in DC. IMonog. Phan. 6 (1889) 075. 
Philippines (1009 Cuming) fide Hackel 1. e. 
Endemic. 
Tribe III. ZOISIEiE. 
Spikelets solitary or in groups, usually l-flowerod, the llowering glume 
always awnless, membranous, the empty glumes firmer, freipieutly awned. 
Ehachis continuous. Otherwise as in Andropogoneie. Low grasses. 
(21) PEROTIS Ait. 
Spikelets narrow, delicate, the empty glumes very long-awned, usually 
standing at right angles to the axis of the long usually slender spikes. 
Species three, Trojiies of tlie Old World, two in the Pliilippines. 
1. Leaves flat, 4 to 5 mm. wide : empty glumes including the awns less than 
1 cm. long , (1) P. indica 
1. Leaves narrow, 1 to 2 mm. wide ; short, stiff ; empty glumes including the 
awns about 2 cm. long (2) P. rara 
(1) Perotis indica (Linn.) (.». Kuntze Rev. Gen. Pi. (1891) 787. Antlioxan- 
tliuin indicum Linn. >Sp. PI. ( 1753) 28. Perotis latifulia Ait. Hort. Kew. 1 
(1789) 85; Hook. f. FI. Brit. Ind. 7 (1897) 98; Rendle in Forbes & Heinsl. 
Journ. Linn. Soc. Bot. 36 (1904) 343; Vidal Phan. Cuming. Philip. (1885) 158; 
F.-Vill. Nov. App. (1883) 313. P. glahrala Steud. Syu. 1 (1855) 180; Mi(j. 
FI. Ind. Bat. 3 (1859) 313; F.-Vili. Nov. App. (1883) 313. Presl Rel. Haenk. 1 
(1830) 228. 
Philippines (1399 Cuming). 
Tropical Asia, Africa, and Malaya. 
(2) Perotis rara R. Br. Prodr. (1810) 172; Benth. FI. Austral. 7 (1878) 
509; F.-Vill. Nov. App. (1883) 314; Miq. FI. Ind. Bat. 3 (1859) 479; Xystidium 
maritimum Tfin. Fund. Agrost. (1820) 102. t. 2. ? A', barljutiim Presl Rel. 
Haenk. 1 (1830) 228; Scribn. Rept. Mo. Bot. Gard. 10 (1899) 55. 
Luzon, District of Lepanto, Suyoc to Cervantes (4447 Merrill) November, 
1905. 
Australia. 
This -species is reduced by some authors to the preceding, but judging from 
the material available it is sufficiently distinct. I am not sure of the. correctness 
of the reference of Xystidium maritimum Trin., to the present species, as I have 
not been able to consult Triniu’s Fundamenta Agrostographiae, where the species 
is described. Bentham' states that the Philippine form (Xystidium maritimum) 
appears to be intennediate between P. lati-folia.=P. indica, and P. rara. 
■FI. Austral. 7 (1878) 509. 
