Aug. 1, 1927.] Revision of the Flora of the Bombay Presidency 18 



Tribe II. Androftogonece. — Spikelets usually in pairs, one sessile, the other 

 pedicelled, very rarely both pedicelled, those of each pair usually alike as to 

 sex (homogamous) or different (heterogamous) on the axes of variously 

 arranged, often spike-like racemes. Glumes more or less rigid and firmer 

 than the valves, and the lower always longer than the florets. Valves mem- 

 branous, often hyaline, that of the upper floret awned or reduced to an awn 

 •or muticous. 



The key to the genera of this tribe will be given below. 



5. Dimeria, R.. Br. 



Woodrowia diandra, Stapf. must be referred to this genus. The genus 

 Woodrowia, therefore, disappears from the Bombay Flora, 

 I. Spikelets in 2-3-nate racemes. Annuals 



(a) Rhachis nearly straight. Awn long 1. D. ornithopoda. 



(b) Rhachis circinately curved. Awn short 2. D. Woodrowii. 



II. .Spikelets in many-nate racemes. Perennial 3. D. gracilis. 



III. Spikelets in panicles. Annual 4. D. diandra- 



The species of this genus usually inhabit open, flat, dry, gravelly plains 

 which are well drained during the monsoon,, and several species may be found 

 associated with each other in the same locality to the exclusion of every other 

 plant. Where D. ornithopoda, gracilis and diandra grow together, the two 

 former are more numerous. 



1. Dimeria ornithopoda, Trin. Fund. Agrost. (1820), 167, t 14 ; Hack. Monogr. 

 Androp. 81 ; Hook, f . in F. B. I. vii, 104 ; Cke. ii, 945.—/?. filiformis, Hochst. 

 in Hohenack. PI. Ind. Or. no. 231. — Andvopogon filiformis, Roxb Fl. Ind. 

 i 2So. — Andropogon Roxburghianus, Schult. Mant. ii, 451.— Psilostachys 

 filiformis, Dalz. and Gibs. Bomb. Fl. 305. 



Description: Cke. I.e. 



Locality: Ronkan : Kankeshwar Hills, Alibag (Bhide!); Marmagoa 

 (Talbot!); Vetora (Sabnis 33715!).— Deccan : Mahableshwar (Dalzell and 

 Gibson, Lisboa) ; Lingmala to Mahableshwar, 4,000 ft., rain 200 inch. (Sedg- 

 wick and Bell 4653!); Lonavla (Bhide!, Lisboa); Khandala, Tata's Lake, 

 very common (McCann A309!, 9885!, Woodrow"* ; Sakhar-Pathar, Lonavla 

 (Gammie 15948!): Panchgani (Blatter and Hallberg B1214 !, B1219!, 

 B1279!, B1289!, Woodrow) -5. M. Country: Castle Rock (Bhide!), Londa 

 (Woodrow !)•— Ranara : Yellapore (Sedgwick 3124!); Birchy (Talbot 

 2251!) ; Karwar (Hallberg and McCann A307!) ; Siddhapur to Sirsi, open 

 grass land (Hallberg and McCann A313 !) ; Jagalbet, N. Kanara (Talbot 

 1565). 



Distribution : All over India, Malay Islands, Japan, Tropical Australia. 



2. Dimeria Woodrowii, Stapf in Hook. Ic. PI. 24 (1895), t. 2312; Hook. f. in 

 F. B. I. vii, 104; Cke. ii, 945. 



Description : Cke. I.e. 



Locality : Ronkan : Marmagoa (McCann !, Bhide !, Talbot 2557) ; Karanjee, 

 Ratnagiri Dist. (Herb. Econ. Bot. Poona !) ; Ratnagiri (Herb. Dhura!, 

 Woodrow). — Ranara: Mirjan (Hallberg and McCann!); Honavar, open 

 rocks (McCann 1). 



Distribution : W. Peninsula. 



3. Dimeria gracilis, Nees ex Steud. Syn. Gram. 413 ; Hack. Monogr. 

 Androp. 88 ; Hook, f . in F. B. I. vii, 105 : Cke. ii, 946. 



Description : Cke. I.e. 



Locality : Ronkan : Penn, hills (Bhide !) ; Vetora (Sabnis 3714 !) .—Deccan : 

 Lonavla (Bhide!, Woodrow); Khandala (McCann A318 !) ; on the Ghats 

 (Lisboa!).— S. M. Country : Castle Rock (Bhide!) ; Anmod to Castle Rock 

 (Sedgwick 3254!).— Ranara : Bell and Sedgwick 3165! ; Supa (Sedgwick 

 and Bell 4880 !) ; Arbail Ghat (Sedgwick and Bell 5018 !) ; Sirsi (Gammie !) ; 

 Kumwada (Talbot 2260!); Yellapore (Talbot 1527!); Kadra (Talbot!); 

 Sumpkhund (Hallberg and McCann A30S !) ; Sirsi to Siddhapur (Hallberg 

 *nd McCann A311 !) ; Devimani (Talbot !). 



Distribution : W. Peninsula, Ceylon. 



Where this species is growing together with other species of Dimeria it can 

 easily be recognized by its overtowering the others. 



[5] 



