ANNALS OP THE KOYAL BOTANIC GABDEN, CALCUTTA.
Slieatbed stem 3'5—3 em. iu diameter. Leaf-sheaths furnished
with 5—6 galleries or pairs of complete collars.
68. D. mirabiHs.
Stem more slendur than iu the
one pair of complete collars.
type and leaf-slieatha with only
D. mirabilis var. o/igocyc/is.
* • Leaf-eheaths fm-nished with unequal pairs of collars.
t Leaf-sheaths furnislied with pairs of collars of which one
points upwards and the other downwards, but the lower
one much smaller than the upper.
Sheathed stem about 2 cm. in diameter. Leaf-sheaths
furnished with several pairs of unequal collars. Leaflets
with 3 slightly spinulous nerves on the upper surface,
smooth beneath.
69. D. pseudo-mirabilis.
Sheathed stem about 12 mm, in diameter. Leaf-sheaths
with 1—2 pairs of collars. Leaflets sparingly spinulous
on 3 nerves on the upper surface and bristly spinulous
on 5 nerves beneath.
70. D. Forbesii.
t t Leaf-sheaths furnished with reversed collars only.
§ Leaflets approximate into a few groups, 3-costulate.
Leaflets approximate in 4 groups of about 8 each, with
3 nerves on the upper surface and the mid-costa
beneath bristly. Leaf-sheaths bristly spinulous at the
mouth.
77. D. Sabut.
Leaflets 1 0 — o n the whole, approximate into 2-3-
groups, bristly on the mid-costa on the upper surface,
smooth beneath. Leaf-sheaths smooth at the mouth.
72. D. oligophyllus.
Leaflets about 40 on the whole, approximate into 5-6
groups, quite smooth on both surfaces or with the
mid-costa alone slightly spinulous on the upper surface.
The base of the petiole armed with very long (aemuch
as 6—9 cm.) needle-like spines.
73. D. collariferus.
UKCUAKI. THE srECIHS OF DAEMONOBOPS- 39
§§ Leaflets very few (2 pairs only in one spccipien)
large, lanceolate, with 3—8 slender costae, smooth
on both surfaces.
74- D. macrophyllus.
(¿>) Leaf-sheaths furnished with simple oblique, membranous, epinulose crests.
a, Leaflets distinctly grouped.
Primary spathes with tufts of bristlfts on two dorsal carinae. Male
spikelets pectinate. The axis of the ? spikelets strongly sinuous.
75. £>. genicuiatus.
b. Leaflets equidistant.
* Leaf-sheaths furnished with a few short simple spiouliferous crests
on the ventral side.
Outer spathe papyraceous, unaimed. Jiale spikelets pectinate.
76. D. cristatus.
* * Leaf-sheaths furnished with several, simple, oblique, semi-circular,
annular spiouliferous crests.
Outer spathe furnished with long seriate hairs on the back.
Female spadiz elongate, panicled, much branched. Petiole armed
with extraordinarily Jong spines at the sides.
77. D. acanthoboius.
Outer sputhe smooth. Female spadix composed of a very short
few-branched panicle on a long slender peduncular part.
78. D. scapigerus.
•C. Leaf-sheaths armed with isolated or confluent spines, not with annular crests,
bpadix ( ^ and ? ) loosely paniculate when in flower. Spathes elonc^atelanceoate
when open, thinly coriaceous; the outer one with two dorsal
smooth or spinulose keels.
L Spathels of the female spikelets bracteiform, with a very short tubular
part, or very shortly and broadly infundibuliform. Involucrophorum
obconic, more or less pedicelliform.
ii. Leaflets very distinctly grouped into several remote groups.
Peduncular part of the spadix prickly at the sides.
Fruit spherical, with finely fringed scales.
79. D. permanthus.