86 ANNALS OF THE KOYAL BOTANIC GAKDEN, CALCUTTA.
small, terminal; ovule solitary. Leaves minutely pellucid-punctate. Flowers in long
terminal peduncles, solitary or in pairs. Distrib.—Tliree species; all Malayan.
The genus Disepalum was founded by Sii- Joseph Hooker on a Bornean shrub collected
by Lobb, and the only species known to its founder was that described and figured under
the name of D. anomalim in the Linna^aii Transactions (vol. xxiii. 156, t. 20A). The
characters wliich separate the genus from any other iu the family are the dimerous
symmetry of the sepals and petals, and the small size of the latter, which originate at
some distance from each other from the edge of the broad, sub-concave tonis. The
specics here described difiiers from D. anomalum in its arboreous liabit, larger leaves, and
much more numerous ovaries, which are, moi-eover, nearly glabrous and have long
stalks. Quite ripe fruit is as yet unknown.
1. DISEPALUM LONGIPES. King in Journ. .¿Is. Soc. Bengal 61, ft. 2, 69. A glabrous
tree 30 to 40 feet high; young branches slender, pale brown. Leaves minutely pellucidpunctate,
membranous, oblong, sometimes slightly oblanccolate, rarely oblong-elliptic,
abru])tly and shortly acuminate, the base cuneate; main nerves 7 to 10 pairs, spreading
(sab-horizontal), very faint; length 4 to 7 in., breadth 1-5 to 3-25 in.; petiole '25 in.
Flowers on long pedicels, dark red, solitary or in pairs, terminal, -5 in. in diam.; pedicels
slender, ebracteolatc, 1-35 to 2 in. long. Sepals reflexed, concave, broadly ovate, blunt.
Petals remote from each other, linear-spat huíate, sub-incurved, '2 in long. Stamens
numerous; apical process of the connective orbicular, sub-convex. Ovaries numerous,
stalked, slightly obovoid, glabrescent or sparsely pubescent, 1-ovuled; style short, straight;
stigma small, terminal. Immature carpels ovoid, sub-glabrous, slightly corrugated; pericarp
fleshy, fragrant. Seed solitary, ovoid.
Johore; on Gunong Panti at 1,500 ÍQGÍ,—King's ColUetor No. 231. Distrib.—
Borneo,—iJeccan (P. B. 1645).
PLATE 118B. Disepalum longipes, King. 1, Flowering branch; 2, immature cai-pfils;
3, carpels nearly matm-c; 4, fiovter—of natural sise; 5 & 6, anthers; 7 & 8, pistils—
much enlarged.
1 5 . G o n i o t h a l a m u s,
Small trees or shrubs. Leaves with faint nerves, foi-ming intra-roarginal loops.
Floxoers solitary or fascicled, axillary or extra-axillaiy ; peduncles with basal, scaly,
distichous bracts. Sepals 3, valvate. Petals 6, valvatc in 2 series ; outer tluck, flat, or
nearly so; inner smaller, shortly clawed, cohering to form a vaulted cap over the stamens
and ovaiy. Sia^yiens many, linear-oblong; anther-cells remote, dorsal; connective produced
into an oblong or tmncate process. O ™ ^ many; style simple or 2-fid; ovules solitary
or 2 superposed, sub-basal (4 in G. uvarioides). Ripe carpels 1-seeded. Distrib.—
About 47 spccies, natives of Eastern tropical Asia and its islands.
The plants referred to this genus are, by Bâillon, treated as part of Melodorum.
Ovules 1 or 2.
Style cylindrio, slender ; stigma subulate, entire.
Sepals persistent.
PloTvers 2 to 2-25 in. lone- ; leaves narrowly oblocg-lanceolate with
1, O. Gardneri.
acute bases
ANONACE^ OF BRITISH INDIA. 87
Flowers 1'25 to 1-5 in. long; leaves elliptic to oblong or ellipticoblong
2. O. Thcaitmi.
Sepals not persistent; flowers under 1 in. long 3. (?. mhevenitm.
Style very short; stigma funnel-shaped, slit on one side, its edges toothed . 4. Q. tenuijolhoi.
Style oylindric; stigma truncate, entire.
Flowers in foscicles from the stem only; ripe carpels 1-25 in. long . . 5. G. Prainianus.
Flowers soUJary from the axils of the leaves .or of fallen leoyos j ripo
carpels "4 in. long 6. (?. Rmsihri.
Style subulate or oylindric j stigma deeply 2-cleft.
Petals less than 2 in. long.
Nerves 14 to 16 pairs; leaves not reticulate 7. G. Walkcri.
Nerves 12 to 20 pairs; leaves much reticulate 8. G. reticuMua.
Nerves of leaves 8 to 11 pairs.
Leaves 2-6 to 4 in. long 9. (?. Wiyhtii.
Leaves 8 to 11 in. long.
Apices of anthers truncate 10. (5. Thomaoni.
Apices of anthers conical, acuminate.
Outer petals flat, broadly ovate, nerved, not clawed . 11. G. WynaadmHus.
Outer petals ooncave, cucullate, clawed 12. G. cardiopetalus.
Petals 3 to 5 in. long 13. gUjanteus.
Style cyhndrie; stigma unequally 2-toothed 14. G. Malayanm.
Style cylindric; stigma minutely and equaUy 2-toothed.
Flowers axillary or from the axils of fallen leaves.
Outer petals leas than 1 in. long 15. G. salioinus.
Outer petals more than 1 in. long.
Anthers with shghtly convex orbicular apical appendages.
Inner petals -75 in. long 16. G. JJookerL
. Inner petals '3 in. long 17. G. /ulvus.
Anthers with very pointed conical apical appendages.
Nerves of leaves 2 8 to 34 pairs 18. (?. CuriM.
Nerves of leaves l e a than 2 0 pairs.
Leaves pubescent beneath 19. G. Simonsii.
Leaves quite glabrous.
Leaves shining, reticulate; ripe carpels oblong,
•5 to -6 m. long 20. G. GriffithU.
Leaves opaque, dull, not reticulate; ripe carpels
globular, obovoid, -4 in. long 21. G. macrophylhis.
Flowers in fascicles from tubercles near the base of the stem , , . . 22. ff. Ridkyi.
Stylo cyhndrio; stigma 3-ioothed.
f anthers orbicular, shghtly convex 23. (?. sesqtiipedaliB.