66 ANNAL3 OF THE EOl'AL iBOTANIC GAEDEN, CALCtTTTA,
PLATE NO. 56.-—Gigantocliloa Kiirzii, Gamble. 1 and 2, flower- and leaf-bearing
branehlets—0/ natural size; 3, culm-sheath—reifMcecf; 4, spikelet; 5 and 6 empty
glumes; 7, palca; 8, sfcaminal tube, anthers and style; 9 and 10, ovaiy and style; 11,
do. (older) with stamens—enlarged. (Nos. 10 and 11 from Wray's; the rest from liurz
specimens.)
6. GIGANTOCHLOA UETEROSTACHYA, Munro in Trans. Lim. Soc. sxvi. 125.
A graceful, apparently somewhat scandent, bamboo. Culms 30 ft. long, thin-walled.
Culm-sheaths not known. Leaves linear-lanceolate, -i to 11 in. long, 'O to 1 in. broad,
rounded at the base into a short petiole about "1 in. long, produced above into a long,
scabrous, twisted, setaceous point; smooth above, except the scabrous points on the
marginal Teins, smooth below except for a few hairs on the midrib, scabrous on the
mai-gins; main vein narrow, shining, secondai-y veins 6 to 8, intermediate 5 to 7;
Uaf-shaaihs striate, ending at the mouth in a shining callus and a rounded glabrous
auricle, and produced beyond it to meet the ligule ; ligule long, dentate, glabrous, sometimes
long ciliate. Lifioresaence a large leafy panicle with spicate branches bearing
distant few- rarely many-flowered heads in the axils of chaffy glabrous bracts ; heads
with fertile flowers often with only one spikelet, those with sterile flowers bearing 4 to
5 ; rachis smooth, striate, uppermost joints slightly pubescent, distance between heads
from -5 up to 4 in. or more. Sj)ikelets of two kinds : sterile '5 to "7 in., consisting
of glumes sheathed one within the other ; fertile 1 to 1*3 in. long, -2 in. broad,
glabrous, oblong, compressed, with usually 1 to 3 empty glumes or with one incomplete
flower, 4 to 5 fertile flowers and 2 to 3 terminal incomplete flowers, all on the joints
of a persistent racbilla; empty ghmes ovate, acute or mucronate, many-nerved, glabrous ;
jlowering glumes similar, but those of upper flowers convolute, longer mucronate ; palea
shorter than flowering glume, that of lowest (usually imperfect) flower very short,
obtuse, 2-keeled, ciliate on the keels, 4- to 8-nerved. Lodicules 2 to 3, oblong or
ovate, blunt or somewhat acute, long-fimbiiate. Stamens esserted, tube short and thick
at first; anthers about '4 in. long, apiculate, the point penicillate. Ovary ellipsoid, very
hairy, with a hairy style somewhat flattened and often cuiTcd, and bearing one to three
plumose purple stigmas. Kurz in Indian Forester i. 345.
Malay Peninsula, collected by Griffith (No. 6731) near Ayer Punas, about houses.
The few fertile spikelets, which are glabrous and many-flowered, seem to distinguish
this species. Kurz thinks it must be a Teinostachyum, but the spikelets I have
examined are distinctly those of a Gigantochloa, with monadelphous stamens, keeled paleas
and lodicules. Mum-o says there are three lodicules, but I have only found two, so too
I have only found undivided stigmas. "With this also I identify Ridley's No. 1717,
Bulu tilan, with much larger and many-flowerod heads. The plate was done from
Griffith's specimen, and does not show the head quite so large or with so many apikelcts
as it should perhaps do. G. laiispiciilata with much-flattened large spikelets in beads
of 2 to 3 only comes very near tliia.
PLATE NO. bl.— Gigantochloa heterostaehya, Munro. 1, leaf- and flower-bearing brandi
—of natural size; 2, leaf-sheath; 3, spikelets ; 4 & 5, empty glume»; 6 & 7,
flowering glume and palea of lowest flower; 8 & 9, flowering glume, palea and
anthers of uppermost fertile flower; 10, palea; 11, lodicules; 12, staminal tube and
atnhers ; 13, anther tip ; 14, jointed rachilla -with teiTninal imperfect flowers—cjiiajyiJ
I N D I A N B A M B U S E ^ ; GAMBLE,
(all from Giiffith's specimen, No. 3 four times enlarged) ; 15, ovary with stigmas (from
llidley's specimen).
7 . GIGANTOCHLOA LIGULATA, n. . Gamlla.
Culms and culm-sheaths not known. Leaves 12 to 16 in. long, 2 to 3 in. broad, oblonglanceolate,
unequal at the base and unequally attenuate into and decurrent into a
•2 to '3 in. long, flat petiole, wrinkled at base ; acuminate above in a scabrous point
with reflexed edges ; smooth above, except the scabrous points on the marginal veins,
pale beneath and smooth, except the scabrous tip ; scabrous on one margin; main vein
broad, yellow beneath, secondary veins 12 to 14 pairs, intermediate 6 to 7, pellucid
glands many, giving the appeai'ance of transverse veinlets beneath, these being very
conspicuous when young; leaf-sheaths smooth, shining, brown, striate, ending in a cushionlike,
shining, rounded, often ciliate callus and produced at the mouth to meet the ligule;
ligtile up to 1 in. long, glabrous, bifid in two long, acuminate, membranous lobes.
Inflorescence a long terminal panicle of spicate branchlots bearing distant heads on leafy
branches; heads with 5 to 8 fertile spikelets, in the axils of long, yellow, stramineous
bracts; bracts glabrous, '5 to I'o in. long, ending in a truncate mouth ^vhich is furnished
with round, dark, naked auricles and long-fimbriate ligules; rachis flstular, glaucous,
smooth iu the lower half, minutely pubescent with white hairs in the upper, lower joint«
3 in. long, gradually decreasing to about 'o in. at the summit. Spilceleti -U to '8 in. long,
conical, acuminate, with 2 to 4 empty glumes, 3 to 4 fertile flowers and 1 terminal
imperfect flower ; empty glumes ovate, acute, mucronate, mauy-veined, long brown ciliato
on the margins ; flowering glume similar but longer and more mucronate ; palea shorter
than flowering glume, 2-keeled, long cihate on the keels, blunt or bi-mucronato,
S-noi-ved on the back. LodicuUs none. Stamens exsei-ted, tube thickened at first,
afterwards membranous ; anthers long, narrow, apiculate, haiiy at tip. Ovary depressed,
ovate, shining, hairy, long-stalked, ending in a slender style and short plumose stigma.
Caryopsis not known.
Malaya : collected at Kuala Wok in Perak by L. Wray, Jr., (No 845) and by
H. N. Ridley at Kwala Pahan in Pahang in 1891 (No. 5597). This must be a splendid
bamboo, judging from the specimens of the leaves and infloresccnce. It is called Biihi
tchr, and in many respects resembles G. Kiirzii, but differs notably in tiie much lai-gei«
leaves and longer spikelets, the long ligules, and the hairy rachis.
PLATE No. bS.—Gigantochloa ligulata, Gamble. 1, part of leaf branch; 2, part of
flower branch—fl?^ of natural size ; 3, spikelet ; 4, empty glume ; 5, flowering glume ;
6, palea; 7, staminal tube and anthers; 8 & 9, ovary with style and enlarged
(from L. Wray's specimens).
8. GIGANTOCHLOA LATISPICULATA, n. sp. Gamhle.
A largo bamboo. Culms about 50 ft. high. Culm-sheaths not known. Leaves pale,
12 to 14 in. long, 1 to 1-4 in. broad, lanceolate, attenuate at the base and decurrent into
a-2 to-3 in. long petiole; glabrous on both sides, smooth, except the scabrous points on
marginal veins; main vein shining, prominent, secondary veins 8 to 9 pairs very
inconspicuous, intermediate 6 to 7; leaf-sheaths smooth, glabrous, keeled
A s s . ROY. DOT. GAKD. CALCUTTA, YOL, YII,