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pubescent panicles, 1.5 to 3 in. long; rachis angular, swollen at the nodes; bracts subulate, recurved, 1 in. long; bracteoles triangular, minute. Calyx-tube very short; lobes 4, triangular, acuminate. Corolla yellowish- or greenish- white, fleshy; tube urceolate, '05 to 1 in. long; lobes oblong, incurved, '05 in. long, induplicatevalvate in bud. Stamens 2, inserted on the tube of the corolla; filaments very short, broad; anthers ovate, rather large. Ovary ovoid; style 0; stigma 2-lobed; cells 2, ovules 2 in each cell, erect from a minute basal central placenta. Berry ovoid or globose, 5 to 7 in. in diam., rough, surmounted by the persistent stigma, blueish-black when ripe; cells 2. Seeds 2 to 4, erect on an enlarged placenta at the base of the central dissepiment; albumen fleshy, testa membranous. Mus. Bot. Lugd. Bat. I. 320, t. 51; A.DC. Prod. VIII. 290; Miq. Fl. Ind. Bat. II. 549; Clarke in Hook. f. Fl. Br. Ind. III. 618.

PENANG: Curtis 2849. PERAK: Wray 2139, 2834, 4179; Scortechini 532, 5986; King's Collector 3584, 4544, 7392, 8845. MALACCA: Maingay (K.D.) 996/3-DISTRIB. Sumatra (Forbes 1585, in the Lampongs); Java.

LONDON

PRINTED BY WEST, NEWMAN AND CO.

HATTON GARDEN

JOURNAL

OF THE

ASIATIC SOCIETY OF BENGAL.

I

VOL. LXXIV., PART X.-Extra Number, 1905.

Materials for a Flora of the Malayan Peninsula.-By SIR GEORGE KING, K.C.I.E., LL.D., F.R.S., late Superintendent of the Royal Botanic Garden, Calcutta, and J. SYKES GAMBLE, C.I.E., F.R.S., late of the Indian Forest Department.

No. 18.

This part contains nine Natural Orders, viz., Nos. 79 Hydrophyllacea to 85 Lentibulariacea inclusive, as well as Nos. 87 Bignoniacea and 88 Pedalinea. The whole part is the work of Lieut.-Col. D. Prain, I.M.S., F.R.S., Superintendent of the Royal Botanic Garden, Calcutta, with the exception of Boraginea, which has been done by Sir George King, and Hydrophyllacea and Bignoniacea, which have been done by Mr. Gamble.

The nine Orders dealt with contain 53 genera and 150 species of the species none are here described for the first time.

Natural Order No. 86 Gesneracea will follow later on with the three Orders, 75 Apocynaceæ, 76 Asclepiadaceæ, and 77 Loganiaceæ, the preparation of which is not yet quite complete.

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Annual or perennial herbaceous plants. Leaves radical or alternate, rarely opposite, entire or dentate, simple or pinnately or palmately lobed. Flowers usually unilaterally sub-sessile on the branches of a bifid or dichotomous scorpioid cyme, or else pedunculate in the axils or on the summits of the branches; regular, hermaphrodite. Calyx

inferior, with 5 or occasionally many equal imbricate lobes. Corolla gamopetalous, funnel-shaped cup-shaped campanulate or rotate; lobes 5, rarely many, imbricate or sometimes twisted. Stamens as many as the corolla-lobes, alternate with them, usually fixed to the base of the tube, exsert or included; filaments filiform, sometimes dilated or appendiculate at base; anthers ovate, oblong or linear, dorsifixed; cells 2, parallel, dehiscing introrsely with longitudinal clefts. Ovary superior, sometimes unilocular, with 2 free or parietal placentas, sometimes more or less completely 2-celled with fleshy placentas adnate to the septum; styles either 1 filiform bifid or undivided, or 2 distinct from the base; stigmas terminal, small or capitate; ovules 2 to many in each cell. Capsule loculicidally, sometimes septicidally, bi-valved, the placentas if parietal attached to the valves, if central remaining free. Seeds usually oblong, globose or angular, 2 to many on each placenta ; testa reticulate or wrinkled, rarely smooth; albumen fleshy, embryo small, erect; cotyledons plano-convex or semi-terete.-DISTRIB. About 150 species, chiefly American, very few in the Old World.

HYDROLEA, Linn.

Herbs or undershrubs. Leaves entire, alternate. Flowers blue, in short terminal cymes or racemes. Calyx divided nearly to the base, segments lanceolate. Corolla widely campanulate, sub-rotate, lobes imbricate. Stamens 5, attached to the corolla-tube; filaments filiform, sometimes dilated at base; anthers sagittate. Ovary completely 2-celled, with fleshy placentas adnate to the dissepiment; styles 2, rarely 3, distinct, filiform; stigmas capitellate; ovules many in each cell, multi-seriate. Capsule globose or ovoid, septicidal, usually 2-, rarely 3- or 4-valved. Seeds minute, irregularly wrinkled.-DISTRIB. About 14 species, chiefly American, with one Chinese, one of tropical Africa, and one of India and Malaya.

HYDROLEA ZEYLANICA, Vahl Symb. II. 46 (1791). An annual herb; stems nearly glabrous below, glandular pubescent above, soft, somewhat succulent, often rooting, always straggling. Leaves membranous; lanceolate or oblong-lanceolate, attenuate above and below; 5 to 2 in. long, 2 to 5 in. broad; glabrous or slightly pubescent; petiole none or very short and winged by the decurrent blade. Flowers in racemes on short lateral leafy branches. Calyx-lobes acute, glandular-pubescent, 3-nerved, about 3 in. long. Corolla-lobes ovate, ·2 in. long, many-nerved, blue. Stamens with sagittate, often twisted anthers, and filaments dilated at base. Capsule shorter than the calyx-lobes, ovoid, 2-lobed; placentas central, adherent at their backs to the dissepiment. Seeds very many,

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oblong, obtuse, testa very faintly wrinkled. Lamk Ill. t. 184; Wall.
Cat. 4398; W. & A. in Hook. Comp. Bot. Mag. II. 193, t. 26; Wight
Ill. t. 167, and Ic. t. 601; Choisy in DC. Prod. X. 180; Dalz. & Gibs.
Bomb. Fl. 170; Miq. Fl. Ind. Bat. II. 633; Clarke in Hook. f. Fl. Br.
Ind. IV. 133; Trimen Fl. Ceyl. III. 191. Cooke Bomb. Fl. II. 197;
Prain Beng. Plants 711. H. javanica, Blume Bijdr. 725. Nama
zeylanica, Linn. Sp. Pl. 226; Roxb. Fl. Ind. II. 73. "Tsjeru Vallel,"
Rheede Hort. Mal. X. t. 28.

PERAK: Wray 2571, 3336; Scortechini; Ridley 2906; King's Collector 391, 2577.-DISTRIB. Throughout India, Ceylon, Burma, Siam, Java, Malaya, China, the Philippines; also in Australia, tropical Africa and America, in wet places and rice-fields.

Order LXXX. BORAGINEÆ.

Herbs, shrubs, or trees, often conspicuously hispid or scabrous. Leaves alternate, very rarely opposite, ex-stipulate, usually entire, rarely in verticils. Flowers usually in scorpioid dichotomous cymes, sometimes trichotomously paniculate, rarely solitary and axillary, bracteate or not, hermaphrodite. Calyx inferior, 5-lobed (rarely 6- to 8-lobed), the lobes imbricate, rarely valvate, usually persistent in fruit. Corolla gamopetalous, of various forms, often with scales in the throat; the limb 5-lobed (rarely 4- to 6-lobed), the lobes imbricate, rarely twisted. Stamens as many as the lobes and alternate with them, inserted on the tube; anthers ovate to linear, introrse; filaments slender, often dilated at the base. Disk under the ovary or obsolete. Ovary superior, sessile, cells 2 with 2 ovules in each, or 4 with 1 ovule in each; style terminal or from the depression between the lobes of the ovary, long or short; stigma entire and capitate or 2-lobed, the style rarely twice bifid; ovules sub-erect from the basal angle of the cell. Fruit drupaceous with a hard 2- to 4-celled endocarp or dividing into 2 or 4 nutlets with thin or fleshy walls. Seeds erect or oblique, with membranous testa and fleshy albumen or ex-albuminous; embryo curved or straight, radicle superior.-DISTRIB. Universal. Species about 1,500.

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Styles twice partite; drupe 4-1-seeded; trees or shrubs; calyx
enlarging in fruit
Styles simple or only bi-partite; rarely (Coldenia) 2 or more and
distinct; drupe including two 2-seeded or four 1-seeded pyrenes;
calyx only slightly or not at all enlarged in fruit :-

Styles depressed-conical at the apex or with a horizontal ring
below or at the stigmas:-

1. CORDIA.

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