f 



MELASTOxMACE/E. XXIII. Rhexia. XXIV. Heteronoma. XXV. Pachyloma. XXVL OxysroRA, &-c. 747 



leaves sessile, erect, narrow-lanceolate, tapering into an acumen entire. Thyrse panicled, loose, terminal, bractless. Flowers 



at the apex, 3-nerved, glabrous on both surfaces 

 dicliotomous 



calyxes smoothish. ' V. H. 



corymbs 



Native of Georsfia 



purple- The character of this genus is very doubtful, from the 

 fruit being unknown, but the habit is very singular. 



and Lower Carolina, in humid places. Flowers purple. Very 1 P. co°ria'ceum (D. C. 1. c.) »? . S. Native of Brazil, in 



like the variety of R. glabella according to Nutt. gen. amer 

 Stratght Rhexia. PI. | to 1 foot. 



(M 



gular, hispid ; leaves furnished with a few long hairs, lower ..».. 

 cuneate-oblong, obtuse ; upper ones, lanceolate ; calyx margi- 

 nated, with the lobes acute; anthers short. %. F. Native of 

 Georgia and Florida, Flowers yellow. Petals oval, obtuse. 



/e//oft;-flowered Rhexia. PI. i- to | foot. 



8 R. ANGUSTiFOLiA (Nutt. gen. amer. 1. p. 244.) stem nearly 

 terete, hairy ; leaves linear-lanceolate, sometimes oblong, hairy, 

 tearing smaller leaves in the axils ; flowers cymose ; cymes 

 whd; calyx cylindrical, short, smooth ; stamens declinate. It- 



the province of Rio Negro, and at the river Amazon. Rhexia 

 pachyloma. Mart. herb. 



Far, a, glaberrima (D. C. 1. c.) calyxes glabrous ; leaves ob- 

 long. Rhexia bicuspis, Schrank, mss. 



Var. (3, subsetosa (D. C. 1. c.) calyx covered with glandular 

 bristles ; leaves ovate. Rhexia Amazonium, Schrank, mss. 



In both varieties the leaves vary in the same specimen, and arc 

 cleft in a singular manner at the apex, the points cross over each 

 other in the manner of the bill of a cross-beak, Loxia of Lin. 



Con«ceoM5-leaved Pachyloma. Tree 30 to 40 feet. 



Cult. See Meriania, p. 733. for culture and propafjation. 



Native of Georgia and Carolina. 

 car. 129. Poir. diet. ency. 6. p 

 i-am. ill. t. 288. f. 3. Michx. fl. I 

 middle-sized, white. 



2. 



R. lanceolata, Walt. fl. XXVL OXY'SPORA (from o^vc, oxys, sharp, and oTto^a, 



spora, a seed ; in allusion to the seeds being awned at both 



Ma , , 



p. 221. Flowers 



^ arrorv-leaved Rhexia. Fl. June, Aug. Clt. 1812. PL | ft. Lm. syst. 



ends). D. C. prod. 3. p. 123. — Arthrostemma species, D. Don, 

 in wern. soc. mem. 1. c 



Monogy 



Tube of calyx oblong ; 



Cult. 



Uernifblia 



V ^ 



lobes 4, ovate, mucronulate. Petals 4, lanceolate, obliquely 

 acute. Stamens 8, equal ; filaments flattish. Anthers elongated, 



flo\ 



All the species of this genus are very elegant when in drawn out at the base into 2 blunt spurs, having their connec- 



wer, and if planted in a bed of peat soil (which is the only 

 soji m which they grow) they will thrive and increase abun- 

 ^^tly ; and if grown in pots, which is sometimes the case, thev 



«3ust be planted in peat soil. 

 3t the root. 



XXIV. HETERONO^MA (from Irepog, heteros, and va>^a, 



tives hardly evident. Capsule 4-celled, 4-valved. Seeds small, 

 hardly curved, awned at both ends: with the hylum con- 

 cave and terminal. — Shrubs, native of Nipaul. Leaves pe- 

 They are all increased by dividing tiolate, elliptic, oblong, acuminated, denticulated, 5-7-neryed, 



glabrous on the upper surface. Thyrse panicled, terminal. 



Flowers red, drooping. 



1 O. va'gan^s (Wall. pi. ran asiat. 1. p. 78.) rather clirnbing; 

 branches nodding ; leaves somewhat cordate-ovate, acuminated, 

 crenulated, ciliated, clothed with tomentose villi on the under 

 surface, as well as on the branchlets and petioles ; panicle elon- 

 gated, nodding ; connectives of anthers all spurred upwards ; 

 calyx ribbed. ^ . G. Native of Chittagong. Melastoma 

 vegans, Roxb. mss. Flowers red. 



Var. /3, cirnua (Wall. 1. c.) leaves ovate-lanceolate, 5-nerved, 

 glabrous ; panicle terminal, slender, elongated, nodding ; pe 



D.C. 



**'"Off, noma, atos ; original form : inequality of leaves), 

 prod. 3. p. 122. ' 4 J^ ; 



Lm. sYST. Octdndria, Monogyn 

 "angular, acute, permanent teeth. Petals 4, oval, somewhat 

 ?«»icronate. Stamens 8. 



Calyx tubular, with 4 



duncles 4-winged. 

 cernua, Roxb. mss. 



h 



Native of Chittagong. 



Melastoma 



Common Oxyspora. Shrub 2 to 4 feet. 



2 O. panicula'ta (D. C prod. 3. p. 123. Wall. pL rar. asiat 



J — ^^^^.^ti^ u. Anthers alternately longer; in the 



^ger anthers the connective is drawn out into a linear appen- 

 j^?^' ^*^^ch is bifid at the apex ; in the smaller or shorter ones 

 jj^ IS drawn out into 2 bristles. Capsule 4-celled, equal in length 

 the calyx. Seeds cochleate, compressed, wrinkled trans- 

 jj^^f^V' scabrous, the stripes on the back parallel.— A glabrous 

 ^ ' ^f^^ches tetragonal. Leaves petiolate, ovate, acute, 5- 



erved, ciliately serrated, opposite, very unequal in size, the one , , 



J ^ge and the other small. Cymes corymbose, few-flowered, - 1. p. 78. t. 88.) leaves somewhat cordate-ovate, acuminated, cre- 

 *^se, terminal. Flowprs plpaant. rnsp-rolnnrpd. nulated, clothed with villous tomentum beneatli as well as on the 



petioles and peduncles ; panicle ovate, erect ; connectives of the 



longer anthers obsoletely spurred ; capsule nerveless. Tj . G. 



Native of Nipaul. Flowers red. D. C. coll. p. 33. t. 4. 



Arthrobtemma paniculata, D. Don, prod. fl. nep. p. 222. 

 Panicled'^oweYed Oxyspora. Shrub 2 to 4 feet. 

 Cult. For culture and propagation see Lasidndra, p. 752. 



Both are very elegant shrubs when in blossom. 



PI. 2 feet. 



- Flowers elegant, rose-coloured, 



of p ^iVERsiFOLiuM (D. C, prod. 3. p. 122.) %.S. Native 

 eru ex herb., Dombey, and of Mexico. Rhexia diversifolia, 

 ^onph rhex. t. 45. Rhexia inaqualif olia, Moc. et Sesse, fl. 

 "lex. ined. t. 334. 



pverse-leaved Heteronoma. 



««. Peat is the best soil for this plant ; and cuttings will 

 ot in the same kind of earth under a hand-glass, in heat. 



XXV^ PACHYLaMA (from Traxvc, pachys, and Xw/za, XXVIL TRICE'NTRUM (from rp£*c, ^rm, three, and Kf v- 



rpov, kentroriy a ii\)ur ; in reference to the connectives of the an- 

 thers being furnished with three spurs at the base). D. C. prod. 



3, p. 123, 



Lin. syst. Octdndria, Monogynia. Tube of calyx ovate ; 



lobes 4, narrow, acute, usually endin^; in three bristles each at 

 the apex. Petals 4, oblong or oval. Stamens 8; filaments 

 glabrous ; anthers similar, linear, opening by one pore, beaked : 

 having their connectives furnished with S spurs each, 2 of the 

 spurs are above and 1 behind. Ovarium free, not bristly at the 

 apex. Style filiform. Capsule ovate, 4-celled. Seeds coch- 

 leate.— Small South American shrubs. Flowers rose-coloured,. 

 solitary, nearly like those of Rhexia. 



1 T. ovALiFOLiUM (D. C. 1. c.) besct with glandular pili in 

 5 c 2 



^> a fringe ; in reference to the thick marginal nerve of the 



'^^P- D.C. prod. 3. p. 122. 



iT*^^* SYST. Octdndrta, Monogynia. Tube of calyx obconi- 



T y ^y^ndrical, drawn out beyond the ovarium ; limb some- 



J^at truncate, hardly 4-toothed. Petals 4, oval. Stamens 8, 



^^ V 4"*'^^^'"^ linear, elongated, acuminated, opening by one 



i^^^> having the connectives in 4 of them long and drawn out into 



inf "^^^^ bristle-like appendage ; in the other 4 it is drawn out 



, ^ 2 bristle-like appendages. Ovarium free, 4-ribbed, gla- 



/l^^' Style filiform, exserted. Stigma dot-formed. Fruit 



Jiknown — Smooth Brazilian shrubs. Branches terete, nodose 



^ ^he insertion of the leaves. Leaves on short petioles, oval, 5- 



^^ed, besides being margined by a thick nerve, coriaceous, quite 



