MELASTOMACE^, XXXV. TiBOucmNA; XXXVI. Tristemma. XXXVII. Sarcopyramus, &c. 



761 



the beauty of their flowers. Their culture and propagation is 



Meldstovia 



XXXV. TIBOUCHrNA (meaning not explained by Aublet). 

 Aubl. guian, 1. p. 445. D. C. prod. 3. p. 143. — Savastenia, 

 Neck, elem, no. 795. 



IiN. SYST. Dec&ndria^ Monogynta. Tube of calyx turbi- 

 nate, clothed with imbricate scales ; girded at the base by a 

 double involucrum, both formed of 2 connate bracteas ; lobes 



Lm. SYST. Oct6ndria^ Monogynia. Calyx adhering to the 

 ovarium at the base, permanent, obversely pyramidal, with a 

 truncate 4-toothed border; teeth compressed, ciliated, having 

 the interstices naked. Petals oval, acute. Stamens 8. Anthers 

 simple, straight, naked, opening by 2 pores at the aj)ex. Ova- 

 rium semi-adnate to the calyx, with a funnel-shaped, 4-lobed 

 apex. Capsule square, 4-winged at the apex, 4-celIed, 4-valved ; 

 valves dilated and foliaceous. Seeds cuneated and triangular. 

 — A fleshy erect herb. Leaves petiolatc, oval, acute, 3-nerved; 

 with entire margins, those opposite each other unequal in size. 



r 1 V . ' IT ~.^---— , — ^- ^,Lij tJiiiiru iijcirgins, iiiose opposue eacn oiner unequal m size. 



0-lanceolate, without any appendages between the lobes, as in Flowers rose-coloured, in cymes. This genus differs from others 

 vsbeckia. Fetals 5, oval. Stamens 10 ; filaments glabrous ; j^ a remarkable degree, in the fruit being capsular, and in the 



connectives of anthers bluntly biauriculateat the base. Ovarium 

 free, bristly at the apex. Capsule dehiscent. Seeds cochleate. 

 —A shrub, native of Guiana. Branches slightly tetragonal, and 

 are as well as the petioles scabrous from scales. Leaves on 

 short petioles, ovate; blunt at the base and acute at the apex, 

 quite entire, 5-nerved, clothed with stiflSsh hairs beneath, and 

 adpressed villi above, which is confluent between the nerves, 

 flowers few, nearly terminal, girded by a double involucrum. 



IT. a'sfera (Aubl. guian. 1. p. 1770- ^2 • S. Native of 

 French Guiana. Rhexia aspera, Willd, spec. 2. p. 301. 

 Jastoma Tibouchina, Desr. in Lam. diet. 4. p. 49. D. Don, 

 mem. soc. wern. 4. p. 288. Melastoma aromatica, Vahl. eel. 1, 

 P* 41. Flowers purple. 



Rough Tibouchina. Shrub 2 to 3 feet. 



Cult^ For culture and propagation, see Melastoma^ p. 764. 



ovarium being semi-adnate at the same time. 



1 S. Nipaule'nsis (Wall. 1. c. t. 23.). Q. S. Native of 

 Nipaul, in moist stony valleys, among the mountains. 



Ni2)aul Sarcopyramus, PI. 1 foot. 



Cult, For culture and propagation, see Ccntradcnia, p. 76G. 



Me- 



black 



XXXVIII. MELA'STOMA (from /^Aac, melas, black, and 



arofiay stomay the mouth ; the berries of some of the species are 



they are commonly eaten by children, whose mouths 

 they stain black). Burm. fl. ind. D. C. prod. 3. p. 144. 

 Melastoma species of Lin. gen. 644. D. Don, in wern. soc. 

 mem. 4. p. 286. 



Lin. SYST. Deca-Dodecdndria^ Monogynia, Tube of calyx 



Ovate, half adhering to the ovarium, densely covered with scales 

 or bristles; limb 5 (f. Ill, n>\ rarely 6-cleft ; the segments al- 

 ternating with the appendages, both deciduous. Petals 5 (f. 111. 



AAA VI. I RISTE'MMA (from rpeic, treis, three, and (rrefj^a, cXG. Stamens twice tlie number of the petals. Anthers oblong- 



^tmmaf a crown ; in reference to the calyx being girded by 3 

 circles of bristles). Juss. gen. p. 3i'9. D. C. prod. 3. p. 144. 



Lin. SYST. Octo-Decdjidria, Monogynia. Calyx tubular, 4-5- 

 cleft, furnished with margins or bearded appendages near the limb, 

 and surrounded by many bracteas at the base. Petals 4-5, un- 

 guiculate. Stamens 8*10; anthers a little arched, somewhat 

 auriculated at the base. Ovarium hardly adnate to the calyx at 

 Ine base, and crowned by stiff hairs at the apex. Berry va- 

 J'lously depressed, 4-5"Celle(l, clothed by the calyx. Seeds 

 wknown. Subshrubs or herbs, with tetragonal stems. Leaves 

 '^-o-nerved. Flowers capitate. This genus appears to be inter- 

 .^ediate between Osbeckia and Melastoma. 



linear, a little arched, opening by a pore at the apex, each fur- 

 nished with a stipe-formed connective, which is in some species 

 elongated, and in others short, but always biauriculate or emar- 

 ginate in front. Free part of ovarium conical and bristly. Style 

 filiform, somewhat thickened at the apex. Stigma apruinose dot. 

 Capsule baccate, 5-C-celled opening irregularly. Seeds cochleate. 

 Shrubs, usually covered with strigae. Leaves petiolate, quite 

 entire, or serrulated, nerved. Peduncles terminal, disposed in 

 fascicles or panicled-corymbs, sometimes solitary ; pedicels bi- 

 bracteate. Flowers large, white, rose-coloured, or purple. The 

 genus differs from Osbeckia in the fruit being hardly dry, not 

 opening regularly at the cells, but fleshy at the base and opening 



* 1. virusa'num (Comm. mss. ex Juss. 1. c.) stem sufFruti- in an irregular transverse manner, 

 cose ; leaves oval, acuminated, 5-nerved, pilose on both sur- 

 '^ces as well as the branches ; heads o£ flowers terminal, almost 



Native of 



Vent, choix. t. 35, Tristemma Mauritianum, 



sessile, usually composed of 5-8 flowers. ^ . S. 



jje Mauritius. 



"ers. ench. 1. p. 476. Melastoma virus^na, D. Don, in wern. 



soc. mem. 4. p. 396. Calyx girded by 3 rings of bristles. 



blowers purple. 



Poisonous Tristemma. Shrub 1 foot. 



8 T. hi'rtum (Vent, choix. p. 35. in a note) stem herbaceous, 

 tetragonal ; branches and petioles beset with spreading stiff 

 nairs ; leaves ovate, 5-nerved, acuminated; flowers capitate, 

 Jerminal, sessile, bracteate. Tf . S. Native of Guinea, in the 

 Kingdom of Waree. Beav. fl. d'ow. vol. 1. p. 93. t. 57, with a 

 %ure. Very like T. virusdnum, but differs in the stems being 

 Jjerbaceous, and in the hairs being longer and more patent, 

 ^alyx having only 2 circles of bristles. Flowers red. 



Hairy Tristemma. PI. I foot. 



^ult^ For culture and propagation, see Melastoma, p. 764. 



XXXVII.SARCOPY'RAMUS(ffOf>^(Ta/)cor,«flrx*flrco5, flesh, 



^d vvpa^i^^ pyramis, a pyramid ; in allusion to the herb, which 

 *• fleshy and pyramidal in its growth). Wall. tent. fl. nep. 1. 

 P- S2. t. 23, D. C. prod. 3. p, 485. 



VOL. u. 



• Fruit baccate. 



1 M. denticula'tum (Labill. caled. 1. p. 65. t. C4.) shrubby; 



branches a little compressed, and are as well as the petioles 



scabrous from adpressed bristles ; leaves petiolate, oval-oblong, 



acuminated, 5-ncrved, scabrous from small bristles above, pale 



beneath, and beset with adpressed strigae along the nerves ; 



flowers few, in a kind of cyme ; calyx urceolate, clothed with 



adpressed strigae, with the lobes lanceolate and deciduous. ^ . G. 



Native of New Caledonia. Ovarium bristly at the apex. Seeds 



cochleate. Flowers white ? 



Denticulated-leaved Melastoma. Shrub 3 to 4 feet. 



2 M. Taitk'nse (D. C. prod. 3. p. 144.) shrubby; branches 

 tetragonal, and are as well as the petioles rough from strigae ; 

 leaves petiolate, oval-oblong, acuminated, rather denticulated, 

 S-nerved, besides the 2 marginal nervules, scabrous from bristles 

 on the upper surface, but strigose on the nerves beneath ; co- 

 rymbs few-flowered ; calyx scabrous from thick bristles; lobes 5, 

 oblong, deciduous. Ij . G. Native of the Island of Tait, in 

 the South Sea. Allied to M. denticulatum, but differs in the 

 corolla being of 5, not of 6 petals, and in the leaves being S- 

 ncrved, not 5-nerved. Flowers white. Berry S-cellcd. Seeds 

 cochleate. 



5 E 



