196 ANNALS OF THE ROYAL BOTANIC GARDEN, CALCUTTA. — [Q. schistoacanthus 
band. Male spadiz . . . . . Female spadiz very slender, filiform, 40 cm. long, with 
a large polished callus at its insertion and terminating in a filiform flagellum 
which is finely aculeolate all round; partial inflorescences very few, only two in one 
specimen and of these the lowest 12 cm. long, with 9 spikelets in all; primary spathes 
elongate, very narrowly tubular, closely sheathing, truncate at the mouth, fugaciously 
covered with blackish scales and densely armed all round with very small and very 
acute black-tipped claws; secondary spathes tubular-subclavate, attenuated a good deal at 
the base, where they are flat onthe inner side truncate at the mouth, obtusely apiculate 
at one side, smooth or armed with a few short claws; spikelets alternate, distichous, 
straight, filiform, horizontal or slightly deflexed, 2-4 cm. long, attached above the 
mouth of their own spathe, and with a distinct axillary callus; spathels tubular-infun- 
dibuliform, truncate at the mouth, indistinctly striately veined; involucrophorum 
shallow, sub-cupular, laterally attached to the base of the spathel above its own; 
involuere sub-cupular with unequal margin; areola of the neuter flower lunate with 
acute borders. Female fiowers small, 2°5 mm. long. Fruiting perianth distinctly pedicelli- 
form; the calyx glabrous, smooth, not striately veined, hardened and depressedly 
ventrieose at the base, divided down almost to the middle into 3 broad apiculate 
lobes; the corolla divided into 3 ovate, acute, smooth segments, which are longer 
by one-third than the calyx; stamens forming with the united bases of the 
filaments an urceolum which is as long as the calyx and is crowned by 6 triangular 
lanceolate, subulate teeth. Fruiting perianth pedicelliform. Fruit globular or a trifle 
longer than broad, 5 mm. long by 8-8:5 mm. in width and further topped by 
a cylindric beak 1°5 mm. long; scales subshining, but very finely scabridulous under 
a strong lens, almost flat, faintly channelled along the middle, broader than long, 
with an intramarginal light line and further bordered by another line of a chestnut- 
brown colour, their tips slightly prolonged and appressed, their margins almost entire- 
Seed irregularly globular, slightly compressed, 6 mm. long, coarsely alveolate; chalazal 
fovea roundish, shallow; albumen equable; embryo basal, 
 Hasrrar.—Cochin-China, Loureiro, Rediscovered by Pierre in February 1879 
on the Chiao-Xhoin mountains.—Native name in Moi language “Rani,” in Annamite 
* May Sap,” (Pierre No. 4834). 
O TIons.—Notwithstanding the very defective description of Calamus dioicus lefi 
by Loureiro, many considerations have induced me to identify with this species the 
specimens of Pierre described above. C. dioicus is related to C. javensis, which 
it resembles in the slenderness, length and toughness of the stem. It is, however, 
distinguished by the leaflets having 3-5 slender coste which are bristly-spinulous 
above and by the fruiting perianth being distinctly pedicelliform. | 
Prare 51.—Calamus dioicus Zour. Portion of the plant with a fruit spadix 
from Pierre's No. 4834. 
40. CALAMUS SCHISTOACANTHUS Bl. Rumphia iii, 49; Mart. Hist, Nat. Palm. iii, 
936; Walp. Ann. iii, 406 and $830; Miq. Fl. Ind. Bat, iii, 122, and 
in Journ. Bot. Neerl i p. 21, and De Palm, Arc. Ind. 27; Wendl, in 
Kerch. Les Palm, 237; Becc. in Rec. Bot. Surv. Ind, ii, 201. 
