imbricate; the tube adnate to the ovary, sometimes with resinous lines. Corolla shortly campanulate, 4-5-lobed; the lobes usually as long as the tube or rather shorter, rounded with inflexed tips, sometimes resinous-lineate. Stamens 4 or 5, inserted on the corolla-tube; filaments short; anthers introrse, oblong-cordate. Ovary adnate to the calyx-tube; style short; stigma small, entire or shortly 3-5-lobed ; ovules numerous, placenta globose. Fruit small, dry or fleshy, ovoid or subturbinate, crowned with the persistent style, many-seeded. Seeds numerous, angular, immersed in hollows of the placenta, and arranged around it with hexagonal surfaces, embryo small, oblique or transverse, cotyledons narrowly ovate.-DISTRIB. Species over 100 (according to Mez), chiefly in the tropical regions of the Old World, a few in Australia and the Pacific Islands; all the Malayan species belonging to sub-genus Eumasa, Mez.

Leaves entire :

Flowers in large terminal leafy panicles; branches of the inflorescence pubescent

Flowers in large axillary or pseudo-terminal panicles of racemes; branches of inflorescence glabrous Leaves faintly lobed :

Leaves very slightly dentate, almost coriaceous, under 3.5 in.
long, midrib and main-nerves very prominent; inflorescence
as long as or only a little shorter than leaves
Leaves membranous, over 4 in. long:-

Leaves pale when dry, under 3 in. broad, distantly den-
tate, inflorescence longer than the petiole

Leaves dull green when dry, over 4 in. broad, inflorescence
scarcely longer than the petiole

Leaves prominently dentate

..

..

1. M. macrothyrsa.

2. M. ramentacea.

3. M. impressinervis.

4. M. striata.

5. M. pahangiana. 6. M. indica.

1. MESA MACROTHYRSA, Miq. Fl. Ind. Bat. Suppl. 573 (1862). A slender climbing shrub reaching 30 to 50 feet in length; branches brown, somewhat angled and flexuose, striate. Leaves entire, chartaceous; elliptic, shortly bluntly acuminate at apex, rounded at base; smooth and dull on both surfaces; 3 to 4 in. long, 1.5 to 2 in. broad; midrib prominent, impressed above; main-nerves 5 to 7 pairs, distant, starting from the midrib at about 60° and curving upwards; secondary nerves and reticulations indistinct; petiole 5 to 7 in. long, channelled above by the decurrent margins of the blade. Inflorescence a large leafy terminal many-flowered tripinnate panicle, the branches rusty pubescent; pedicels about 025 in. long, supported by a slightly shorter ovate-acute bract, and bearing 2 similar bracteoles below the flowers. Calyx superior, cupular; lobes 4, occasionally 5, rounded, denticulate, '04 in. long, gland-dotted; tube very short. Corolla dull white or pink, longer than calyx; tube as long as lobes; lobes 4 or 5, rounded, often with

small lobules between, denticulate, with about 3 to 4 glandular lineoles. Stamens inserted near the base of the corolla-tube; anthers globose; filaments about twice as long as anthers. Ovary rounded, depressed, crowned with a short cylindric style and obtusely 3-4-lobed stigma. Fruit very small, 05 in. in diam., globose, glabrous, faintly striate, crowned about one-third of the way down with the persistent calyxteeth. Seeds very minute, angled. Scheff. Myrs. 29; Mez Monog. Myrs. 49. M. floribunda, Scheff. Myrs. 18. M. Korthalsiana, Scheff. Myrs. 18 (?)

PERAK: Wray 2684; Scortechini 122, 1655; King's Collector 725, 2722, 3777, 4968, 5326.-DISTRIB. Sumatra, Korthals, Beccari 887; Borneo, de Vriese, Teysmann.

We have always found the flowers tetramerous, as described by Miquel and Scheffer. Mez describes them as either 4 or 5-merous. This is a well-marked species on account of its large terminal inflorescence, whose pubescent branches easily distinguish it from those occasional forms of M. ramentacea which have part of the inflorescence pseudo-terminal.

2. MÆSA RAMENTACEA, Wall. in Roxb. Fl. Ind. ed. Carey & Wall. II. 231 (1824). A large shrub or small tree, usually branched from the base and sending out many straggling or climbing branches often 30 to 40 feet long or more; branchlets smooth, somewhat striate when dry. Leaves entire, chartaceous; ovate-lanceolate or elliptic, acuminate at apex, rounded or cordate at base; 3 to 8 in. long, 1.5 to 4 in. broad; smooth on both surfaces and generally shining above; midrib prominent, often impressed above; main-nerves slender, distant, 5 to 10 pairs, starting at 45° with the midrib and curved upwards; secondary nerves and reticulations not apparent: petiole 3 to 5 in. long, slightly winged by the decurrent margins of the blade, which are often connivent above. Inflorescence axillary or sometimes pseudo-terminal, glabrous, many-flowered, consisting of more or less closely packed racemes arranged in bipinnate panicles, shorter or longer than the leaves; pedicels 1 to 15 in. long, slender, supported by a minute lanceolate bract and with 2 very minute ovate-lanceolate bracteoles below the flower; buds minute, globose, depressed at top. Calyx superior, cupular; tube very short, about 025 in. long; lobes 5, ovate, faintly ciliate, as long as the tube. Corolla 075 in. long; lobes half the length, ovate or ovatereniform, edges undulate, with a few brown glandular lineoles. Stamens short, longer in ? flowers, inserted a little below the top of the tube; anthers rounded, filaments as long as the anthers, dorsifixed. Ovary in flowers adnate to the base of the calyx-tube, style short, stigma minutely 4-lobed, ovules many. Fruit globose, 1 to 15 in. long, crowned with the persistent teeth of the calyx; seeds minute, angled,

albuminous, embryo small, transverse. A. DC. in Trans. Linn. Soc. XVII. 133, Prod. VIII. 77; Scheff. Myrs. 15; Miq. Fl. Ind. Bat. II. 1006; Kurz in Journ. As. Soc. Beng. XLVI. ii. 220; For. Fl. II. 99; Clarke in Hook. f. Fl. Br. Ind. III. 508; Koord. & Val. Bijdr. V. 218; Mez Monog. Myrs. 27; Prain Beng. Pl. 642. M. ovata, A. DC. 1.c. 133, t. 4, Prod. 1.c. 77; Scheff. Myrs. 14. M. lanceolata, Don Prod. 148. M. acuminata, missionis, and glabra, DC. Prod. l.c. 77, 78, 82. M. sumatrana, Scheff. Myrs. 15. Baobotrys ramentacea, Roxb. Hort. Beng. 16, Fl. Ind. I. 558; Wall. Cat. 2322. B. ovata, Wall. Cat. 2324. B. glabra, Roxb. Fl. Ind. I. 560. B. fragrans, Wall. Cat. 2323. B. (?) missionis, Wall. Cat. 6523.

KEDAH: Langkawi, Curtis 2554, 3409. PENANG: Wallich 2324; Maingay (K.D.) 1001; J. Scott; G. King; Phillips; Deschamps. PERAK: Scortechini 382A, 606B, 628; Wray 1286, 1291, 1912, 2363, 2787; King's Collector 171, 1222, 1909, 2788, 3883, 4144, 4281, 4497, 4915, 5088, 5113; Curtis. PAHANG: Ridley 2175. SELANGOR: Ridley; Goodenough 10554. NEGRI SEMBILAN Ridley 10067. MALACCA: Griffith (K.D.) 3552; Cuming 2286; Miller 9; Hervey; Goodenough 1036, 1742; Derry 37, 1063; Ridley 10099. JOHORE: Lake & Kelsall 4035; G. King. SINGAPORE: Schomburgk 91; Lobb 324; T. Anderson 126; Ridley 2064, 2805: Goodenough 1644; Hullett 38, 56, 885, 887.— DISTRIB. Eastern Bengal and Burma, Andaman and Nicobar Islands, Sumatra, Java, Borneo.

We follow Mez in not keeping up the VAR. ovata. The large mass of material available shows clearly that in shape of leaf and in inflorescence the variation is regular, and that the form with cordate long-acuminate leaves passes gradually into that with ovate broad short-acuminate leaves, and that similarly the inflorescence changes. A monstrous form with moss-like inflorescence similar to those often seen in India on M. Chisia and other species, is not uncommon.

3. MÆSA IMPRESSINERVIS, King & Gamble, n. sp. A bush or small tree; branches half as thick as a goosequill, glabrous, pale brown, and prominently longitudinally wrinkled when dry. Leaves thinly coriaceous; elliptic, shortly acuminate at apex, cuneate at base; entire or very faintly dentate only near the apex, margins recurved when dry, reticulate and shining above, dull and paler beneath; 3 to 3-5 in. long, 1-25 to 1.75 in. broad; midrib prominent, impressed above; main-nerves 7 or 8 pairs, also prominently impressed above and prominently raised on the lower surface, arching upwards to meet near the margin; secondary nerves few, inconspicuous as are the reticulations; petiole 2 to 25 in. long, bordered by the decurrent edges of the blade, which are almost connivent above. Inflorescence an axillary raceme, simple or with one short branch near the base, 1·5 to 2.5 in. long, and so shorter

than the leaves; pedicels slender, 1 in. long, with a '06 in. long subulate bract at the base and 2 similar bracteoles beneath the flower; buds nearly globose. Calyx superior, 05 in. in depth, cupular, with 5 imbricate broad incurved concave glabrous lobes. Corolla rotate with 5 imbricate rounded broad lobes, 1 in. deep; tube rather longer than lobes. Stamens 5, inserted on the base of the corolla; anthers globular; filaments flattened, longer than the anthers. Ovary inferior, depressed, surmounted by a flattened lobed stigma, 1-celled; ovules many, cuneate, on a central basal placenta. Fruit unknown.

PERAK: Gunong Bubu, at 5,000 feet elevation; Wray 3850, 3886. 4. MESA STRIATA, Mez Monog. Myrs. 42 (1901). A shrub or small tree; branches smooth, reddish, with scattered lenticels. Leaves membranous; rather variable, elliptic or elliptic-oblong, rounded or acuminate at apex, bluntly acute and sometimes unequal at base; entire or undulate or broadly dentate, especially on the upper half, pale green when dry, glabrous except for a few occasional stiff hairs on the midrib beneath, striate with many faint very slender lineoles; 4 to 7 in. long, 25 to 3 in. broad; midrib angular, prominent beneath, main-nerves 7 to 8 pairs, slender; secondary nerves and reticulations faint and irregular; petiole slender, 4 to 1 in. long, channelled above. Inflorescence of axillary racemes, simple or joined in a sub-sessile panicle, rarely over 2 in. long; pedicels very slender, 05 to 1 in. long, with a subulate bract at base, half their length, and 2 acute bracteoles under the flower. Calyx superior, about 1 in. deep; lobes 5, imbricate, ovate, rounded, about 4-striate, edges hyaline; tube as long as lobes. Corolla as long as calyx, rotate, 1 in. in depth; lobes 5, imbricate, rounded, crenate, glabrous. Stamens 5, inserted near the base of the corolla ; anthers ovate, slightly divaricate; filaments 2 to 3 times as long as anthers. Ovary inferior, depressed, rounded; style short cylindrical, stigma 4-lobed; ovules many, cuneate, on a central basal placenta. Fruit round, 1 to 15 in. in diam., smooth, faintly ribbed, crowned by the persistent calyx-lobes and style.

PENANG at Paya Trobong, Curtis 2857. PERAK: King's Collector 2287.-DISTRIB. Sumatra, Forbes 1260, 1287, 1315, 1376.

5. MESA PAHANGIANA, King & Gamble, n. sp. Apparently a shrub; branches round, smooth, dark brown when dry. Leaves membranous; rhomboid-obovate, acuminate at the apex, rounded cuneate at base; faintly crenate especially in the upper half; glabrous on both dull surfaces; 7 to 8 in. long, 4 to 4.5 in. broad; midrib slender, prominent beneath; main-nerves distant, 8 to 9 pairs, at about half a right angle with the midrib, sometimes branched; secondary nerves few and like the reticulations indistinct; petiole slender, 8 to 1 in. long. Inflores

cence a simple axillary raceme, as long as or slightly longer than the petiole; pedicels slender, about 1 in. long, supported by a minute. subulate bract below and with two similar bracteoles below the flower. Calyx superior, cupular, with a very short tube and 5 triangular imbricate teeth 6 in. long, glabrous, hyaline at the edges and very faintly brown-glandular. Corolla as long as calyx; lobes 5 imbricate, glabrous, rounded, somewhat crenate, with 2 to 3 prominent brown glandular lineoles; tube half the length. Stamens nearly as long as corolla, inserted near its base; filaments about twice as long as the anthers; anthers emarginate, cells somewhat divaricate. Fruit globose with a conical tip surrounded by the remains of the corolla and the persistent calyx, and surmounted by the short persistent style, ribbed,. 125 in. in diam., glabrous.

PAHANG at Tanjong Antan, Ridley 2175a.

Only one specimen is unfortunately available, and that in fruit, with only remains. of flowers.

6. MESA INDICA, Wall. in Roxb. Fl. Ind. ed. Carey & Wall. II. 230 (1824). A shrub reaching 4 to 6 feet in height; branchlets brown, smooth, lenticellate. Leaves chartaceous; elliptic or elliptic-oblong, acuminate, rounded or acute at the base; repand-dentate, about 3 teeth to each main-nerve; 3 to 7 in. long, 2 to 3 in. broad; midrib very prominent, often broad; main-nerves 8 to 12 pairs, others closely reticulate; glandular striæ long, prominent; petiole 5 to 1 in. long, channelled above by the decurrent bases of the blade. Inflorescence of simple or compound axillary racemes, much shorter than the leaves, usually 1 to 3 in. long; pedicels slender, 05 to 1 in. long, longer in fruit; bracts subulate, in flower as long as pedicels; bracteoles 2, minute. Calyx superior, with 5 imbricate lobes, which are ovate, ciliate, striate, about 04 in. long, almost acute or rounded at apex. Corolla as long as calyx; lobes denticulate, glandular-striate; tube as long as lobes. Stamens inserted at base of corolla-tube; anthers ovate, cells divaricate; filaments dorsifixed, rather longer than anthers. Ovary rounded; style short cylindric, stigma obtuse; ovules many. Fruit round, smooth, striate, ∙15 in. long, crowned at the summit by the persistent calyx-lobes and the remains of the stigma. Seeds angular. A. DC. in Trans. Linn. Soc. XVII. 134, Prod. VIII. 80 (in part); Wall. Cat. 2318 E.; Clarke in Hook. f. Fl. Br. Ind. III. 509 (in part); Koord. & Val. Bijd. V. 222; Mez Monog. Myrs. 29. Bæobotrys indica, Roxb. Hort. Beng. 16, Fl. Ind. I. 557.

PERAK: Wray 3314, 3349; Scortechini 16, 733; Ridley 3007, 9741; KingTMs Collector 7712.-DISTRIB. Burma, Java.