104 CLXXIII. GRAMINE^;. (J. D. Hooker.) \_Dimeria. 



Psilostachys Hohenackeri, Steud. Syn. Gram. 413; Hochst. in Flora 

 (1856), 90. 



N. CANARA and MANGALORE, in rice fields, Hohenaclcer, Talbot. 



Stem 6-8 in. Leaves short, upper sheathing. Spikes !-! in- > rachis with 

 scabrid angles. Spikelets -^ in., awns twice as long ; gl. I. very narrow, acuminate, 

 nearly glabrous, at length divaricate. 



ft Rachis trigonous or linear, sometimes as broad or broader thangl. II, 

 joints much shorter than the spikelets. 



4. D. ornithopoda, Trin. Fund. Agrost. 167, t. 14 ; spikes very 

 slender, rachis flexuous, spikelets T T T in. sessile or subsessile, glume II linear 

 acute dorsally ciliate. Hack. Monogr. Androp. 81. D. filiformis, Hochst. 

 in Hohenack. PI. Ind. Or. n. 231. D. stipset'ormis, Miq. Prolus. Fl. Jap. 

 176 ; Franch. # Sav. Enum. PL Jap. i. 187. ?D. diandra, Griff. Notul. iii. 

 71, Ic. PL Asiat. t. 157, f. 2. D. psilobasis, F. Muell. Fragm. vii. 104. 

 D. tenera, Trin. in Mem. Acad. Petersb. Ser. vi. ii. (1833), 335 ; Benth. Fl. 

 Austral, vii. 523. Didactylon simplex & ramosum, ZolL fy Mor. Syst. 

 J'erz. 100. Andropogon filiformis, Eoxb. FL Ind. i. 256; Steud. I.e. 372. 

 A. Roxburghianus, Schult. Mant. ii. 451. A. stipaeformis, Steud. I. c. 377. 

 Psilostachys filiformis, Dalz. fy Gibs. Bomb. FL 305. Dimeria, Wall. Cat. 

 n. 8839, 8840. 



Throughout INDIA ; from Nepal and tbe Khasia Hills to the Deccan, Burma and 

 the Nicobar Islds. (not in Ceylon). DISTKIB. Malay Islds., Japan, Trop. Austral. 



Annual, much branched, leafy. Leaves 1-3 in., erect; sheaths glabrous or 

 pilose. Spikes 2, rarely 3; rachis about as broad as the spikelets, margins 

 scaberulous, costa strong. Spikelets linear, acuminate, callus villous ; gl. I slender, 

 nearly glabrous ; III short, acute j palea 0. Hackel has 6 varieties of this species, 

 of which more might be made. 



5. D. Woodrowii, Stapf in Hook. Ic. PL t. 2312 ; spikes 2 circin- 

 ately involute, rachis rigid glabrous, spikelets very shortly pedicelled, 

 callus shortly bearded, gl. I and II subequal acute, III linear hyaline, IY 

 shortly awned. 



The CONCAN; Ratnagherry district, and near Goa, Woodrow. 



Annual. Stem 3-6 in. slender, leafy to the top, simple or sparingly branched ; 

 upper internode (or peduncle) with its leaf abruptly deflexed after flowering. 

 Leaves 2-3 in., linear, acuminate, erect, strict, glabrous or sparsely hairy ; ligule 

 very short, hyaline. Spikes f-1 in., at first erect, rachis dorsally convex, concave 

 ventrally. Spikelets few, rather distant, suberect, divergent as the rachis incurves ; 

 gl. I glabrous or sparsely hairy ; awn of IV about twice as long as its glume ; palea 

 0. A very peculiar species, at once recognized by the two spikelets forming together 

 a hoop. 



6. D. connivens, Hack. Monogr. Androp. 689 ; annual, rachis of spike 

 nearly as broad as the spikelets ciliate, spikelets in. subsessile, callus 

 minutely villous, gl. I very slender ciliate, 11 oblong-lanceolate acuminate 

 dorsally ciliate. 



CHOTA NAGPORE, alt. 2000 ft., Clarice. 



Stems ascending, 6-10 in. Leaves short, erect. Spikes 1-lf in. j rachis nearly 

 straight, costate. Spikelets erect, closely imbricating ; gl. I slender, sparsely ciliate ; 

 awn twice as long as the spikelet. 



7r D. Xiehmanni, Hack. Monogr. Androp. 82 ; spikes slender spread- 

 ing, rachis undulate scabrid or ciliate, spikelets sessile in. long, callus 

 very shortly bearded, gl. I and II subacute, I narrowly linear, keel ciliate, 



