1000 CXLA'II. GRAMINE.i:. 



An erect grass ; leaves hispid witii bulbous-based hairs, 



rounded at the base ; lateral awns acicnlar 2. A. tuhercidata. 



Leaves 6-12 in. long ; a perennial grass 3. A. svtosa. 



Awn of upper floral glume solitary. 



Spikelets tV"tV i"^- lo"& (smallest of the genus) 4. A. tenella. 



Spikelets /g^e in. long. 



Plant scarcelj' 6 in. high ; leaves 1-1^ in. long 5. A. pygm^a. 



Plants exceeding 6 in. high. 

 Annuals. 



Stems reaching \\ ft. high ; leaves 1-4 in. long and 



as well as the sheaths clothed with long soft hairs. 6. A. agrostoides. 

 Stems reaching 3 ft. high ; leaves 4-6 in. long and 



as well as the sheaths glabrous or nearly so 7. A. Metzii. 



Perennial ; stern reaching 4 ft. high ; leaves 8-12 in. 

 long, sparsely hairy ; sheaths glabrous or nearly so, 



auricled at the mouth 8. A. Lawii. 



Spikelets ^-^ in. long. 



Pajiicle branched ; leaves 0-12 in. long. 



Rootstock hard, creeping, not tuberous ; panicle pyra- 

 midal or thyrsi form ; rhachis angular, glabrous ... 9. A. hrasiliensis. 

 Rootstock tuberous ; panicle oblong ; rhachis filiform, 



scaberulous 10. A. capillaris. 



Panicle spicate ; leaves 1-H in. long 11. A. spkata. 



Upper floral glume awnless ; a tall grass 6 ft. high ; leaves 



12-24 in. long 12. A. gigantea. 



1 . Arundinella arenacea, Mnnro, ex TTiw. Enum. PI. Zeyl. (1864) 

 p. 362. An annual weak straggling slender grass ; stems ascending, 

 leafv, 6-12 in. long, rooting at the lower nodes ; nodes glabrous. Leaves 

 |-2 by ^-| in., ovate-lanceolate, acute, flat, glabrous or sparsely hairy,^ 

 strongly nerved, from an amplexicaul peclinately ciliate 2-auricled base; 

 sheaths glabrous, the margins naked or ciliolate iu the upper part ; ligule 

 linear, small, membranous. Panicle h-1 in. long, ovoid-oblong, compact ; 

 branches very short. Spikelets ^ in. long (excluding the aw^ns). 

 (xlumes 4 •, invol. -glumes distant at the base, 3-5-uerved, membranous ; 

 lower invol.-glume ^ in. long (including awn), lanceolate, acute, narrowed 

 into a scaberulous awn ; upper invol.-glume rather longer, notched at 

 the tip, with a long scaberulous awn in the sinus; lo\Aer floral glume 

 shorter than the upper invol.-glume, oblong, obtuse, dorsally mucronate, 

 paleate, neuter or male, the palea oblong-obovate, 2-fld at the apex; 

 upper floral glume 2-sexual or female, shorter than the upper invol.- 

 glume, oblong, membranous, with 2 lateral tufts of white hairs, 

 divided at the apex into 2 triangular lobes fi'om each of which slender 

 capillary awns issue ; median a« n about | in. long, the lower half 

 brown, twisted, the upper half geniculate, pale, scabrid, subulate; palea 

 linear-oblong, 2-fid at the apex. Y\. B. I. v. 7, p. 69 ; Trim. I'l. Ceyl. v. 5, 

 p. 176 ; Woodr. in Journ. Bomb. Nat. v. 13 (1901) p. 434. Arundinella 

 Camphdliana, Lisboa, in Journ. Boiub. Nat. v. 5 (1891) p. 346. — Flowers: 

 Oct. 



Dalzell without locality in Herb. Kew. Konkan : Ratnagiri, Woodrow. Deccan : 

 Mahableshwar, Lishoa; Tiger Leap near Lanoli, Woodrow \ S. M. Country: Ram 

 Ghat, Ritchie, 890 ! ; Oastlerock, Woodroto. — Uisthib. India (Khasia, Binna, W. 

 Peninsula) ; Ceylon. 



2. Arundinella tuberculata, Mnnroy e.v Lisboa, in Journ. Bomb. 

 Ifat. v. 5 (lb91) p. 344. Annual ; stem erect or slightly decumbent at 

 the base, 12-18 in. high, glabrous. Leaves 1-3^ by ^-| in., linear- 



