CLXIII. GRAMINE^. 
213 
Heteropogon,'\ 
lowest pairs male or neuter. Sessile spikelets sub-cylindric. 
Glume I oblong; glume II blunt keeled; glume 111 hyaline; 
glume IV long-awned; pedicelled spikelets male or neuter, unlike 
the sessile ones and covering them. Species 4, tropical Africa and 
Asia to Mediterranean. 
(i) H. contortus Beaiiv. in Roem. and Schtdt. Syst. ii. 836. 
Andropogon contortus Linn. Sp. PI. 1045; Ridl. Mat. iii. 167. 
Perennial grass; stems tufted, erect or decumbent, i to 5 ft. 
tall, leafy chiefly at base, glabrous or scaberulous. Leaves linear, 
3 to 5 in. long, obtuse glabrous except the ciliated mouth of the 
sheath. Racemes solitary, terminal, i to 3 in. long, Spikelets 
closely imbricating, lower 2 to 6 sessile male or barren. Glume I 
oblong lanceolate, hairy; glume II lanceolate acuminate, edge 
ciliate; glume III oblanceolate. Upper sessile spikelets female, 
■15 in. long, cylindric, brown. Callus red-bearded. Glume I linear 
oblong truncate hispid; glume II linear obtuse, dark broum; 
glume III oblong truncate; glume IV an awn 3 in. long, base 
white, above brown, hispid, spirally twisted. Pedicelled spikelets 
pale, longer than the sessile ones. Hah. Sandy open places. 
Rather rare, Pahang, Pekan. Malacca, Pulau Besar. Penang near 
Batu Feringhi. Disirib, All warm countries. 
26 . DIGITARIA, Rich. 
Slender grasses, often creeping ascending. Leaves linear, acumi¬ 
nate to lanceolate. Racemes digitate at the top of a slender culm. 
Rachis flattened, more or less or winged. Spikelets lanceolate or 
ellipsoid, usually slightly flattened; pedicels short. Glume 1 usually 
quite absent; glume II membranous, lanceolate or elliptic; glume III 
usually larger than glume II, prominently nerved. Species over 
100, all warm countries. 
Spikelets lanceolate, pale green or purplish, glabrous. 
Robust plant; racemes numerous, 6 in. long . . (i) D. marginata 
Slender weak plant; racemes 2 or 3, lax, 4 in, long (2) D. pertenuis 
Spikelets ellipsoid, white-silky hairy; racemes 3 or 4. 
Glabrous, low creeping ascending plant; leaves lan¬ 
ceolate, grain pale . . . . . (3) D. longiflora 
Glabrous tall tufted plant; grain black . . • (-4) D. chinensis 
Hairy dwarf plants. 
Prostrate ascending plant; leaves lanceolate , (5) D. DSBSpitosa 
Stems erect, very slender; leaves narrow linear . (6) D. pusilla 
Spikelets lanceolate, strongly fringed with white hairs; 
pedicels long; robust plant . . . • (7) D. barbata 
(i) D. marginata Link, Hort. Berol. i. 229; Stapf. FI. Prop. 
Africa ix. 439. Paspalum sanguinale Lam. III. i. 176; Hook. fil. 
F.B.I, vii. 13; Ridl. Mat. iii. 125. 
Annual or perennial grass, usually creeping at base, with slender 
ascending culms 8 to 24 in. tall. Leaves linear-lanceolate acumi¬ 
nate, flaccid, usually glabrous; sheaths hairy or not. Racemes 
slender, pale, 3 to 13 crowded at the end of the culm, 4 to 6 in. 
w'b 
