766 



MELASTOMACE^. XLV. Rousseauxia. XLVI. Leandra. 



Unequal'StdedAesLvei Centradenia. PI. 1 to 1|^ foot. 



Lin. syst. Octo-Decdndria, Monogynia. Tube of calyx 



Cult. The seeds of this plant require to be sown in a hot- ovate, urceolate, almost bottle-shaped, drawn out beyond the ova- 

 bed ; and when the plant have attained the height of 2 or 3 rium ; lobes disposed in two rows, with 4-6 outer subulate ones, 

 inches, they may be potted off into separate pots, and again re- and 6 inner oval membranous ones, in front of the outer ones, 

 turned to the hot-bed ; and when they begin to come into flower, Petals 4-6, linear-lanceolate. Stamens 8-12. Anthers linear, 

 they may be removed to the stove. 



Tribe IV. 



MICONIE^^ (this tribe contains plants agreeing with Mico- zilian shrubs, more or less rough from villi or setae. Leaves 



hardly auricled at the base. Style filiform, exserted, hairy at the 

 base. Stigma dot-formed. Berry dry, 8-4-celled. Seeds an- 

 gular, somewhat ovate and shining, with a linear hylum. — Bra- 



nca in important characters). 



opening by 1 or 2 pores at the apex. 



Fruit baccate. Seeds not cochleate. 



D. C. prod. 3. p. 152. 



Ovarium adnate to the 



Anthers triple-nerved, ciliately-serrated. Flowers capitate, usually brac- 



teate. 



calyx. 

 XLV. 



ROUSSEAU'XIA (dedicated by De Candolle to 



Sect. I. Leandra'ria (an alteration from the generic name). 



Desrousseaux, coadjutor with Lamarck in his Dictionnaire de D. C. prod. 3. p. 153. Calyx 5-6-cleft ; lobes disposed in two 



series. Hairs of the calyx and bracteas bristly. 



1 L. amplexicau'lis (D. C. 1. c.) branches tetragonal, rough 

 pherical, smooth ; lobes 4, broad. Petals 4, obovate. Stamens 8 ; from bristles, as well as both surfaces of the leaves and margins ; 

 anthers oblong-linear, opening by 1 pore? sometimes all fertile, leaves oval-oblong, acuminated, triple-nerved, quite entire, ses- 



Botanique.) D. C. prod. 3. p. 152. 



Lin. syst. Octdndriay Monogynia* Tube of calyx hemis- 



with their connectives rather gibbous at the base ; sometimes the 

 alternate ones are sterile, having their connectives short : and 

 the others fertile, with long connectives, which are furnished 



sile, cordate and stem-clasping at the base ; heads of flowers 

 bracteate ; bracteas obtuse or emarginate. Tp . S. Native of 

 Brazil, at the river Xipote. L. hispida, Schrank et Mart. mss. 



with 2 bristles at the base. Ovarium adnate to the calyx, bear- Calyx almost bottle-shaped, rough from short bristles ; lobes 



ing 4 bristle-like scales at the base around the origin of the double, 6 outer ones subulate and thick, and the 6 inner ones 



style. Style filiform. Capsule baccate, opening at the apex. oval and rather membranous. Seeds angular, shining, with a 



Seeds angular, shining. — Shrubs, natives of Madagascar. Leaves linear hylum. Stamens not seen. 



petiolate, 3-nerved, quite entire, oval-oblong. Cymes trichoto- 

 nious, terminal. 



Stem-claspmgAeaved Leandra. Sh. 2 to 3 feet. 



2 L. Pauli'na (D. C. 1. c.) branches terete, thickly beset 



§ 1. Stamens equal, all fertile, each furnished with a short with rufous villi ; leaves on very short petioles, broadly ovate, 



connective. 



bluntly cordate at the base, acute at the apex, somewhat denti- 



_ / /T^ i-. 1 1 N ,1 culately serrated, quintuple-nerved, very villous on both surfaces ; 



1 R, ciiRYsoPHY LLA (D. C. prod. 3. p. 153.) young branches headsof flowers dense, hairy, almost sessile along the short rachis; 



bluntly tetragonal, at length glabrous, rather bnstly at the apex; ^^] very villous ; inner lobes of calyx linear and glabrous, 

 leaves petiolate, oval-oblong, acute, 3-nerved, glabrous on both ^^^^^ ones lanceolate and villous on the outside. ^.S. Native 

 surfaces, beset with adpressed setae on the nerves beneath, and ^f g^azil, in woods on the mountains between Rio Janeiro and 

 on the margins, which are entire ; cymes terminal, twice trifid ; g^^ p^^}^ Meldstoma Paulinum, Schrank et Mart. mss. Upper 

 tube ofcalyxcampanulate, quite smooth: with 4 broad-lanceo- j^^^^g hispid from hairs, which are somewhat bulbous at the 

 late lobes, which are ciliated with bristles. Tj . S Native of base, but clothed with villous tomentum beneath. Bracteas very 

 Madagascar. Melastoma chrysophylla, Desr. in Lam. diet. 4. 

 p. 50. but not of Rich. Leaves yellowish when dried. Petals 

 5, obovate. Flower-bud conical, acute. Stamens 8, equal ; 

 filaments glabrous. Anthers oblong-linear, bluntish. Ovarium 

 crowned by 4 spiny-ciliated scales. Style filiform, rising between 

 the scales. Fruit unknown. 



Golden-leaved Rousseauxia. Shrub, 



^ 



§ 2. Stamens alternately unequal; fertile ones furnished each 

 with a long connective, which ends in 2 bristles. 



2 R. articula'ta (D. C. 1. c.) branches bluntly tetragonal, ,, ti • i ^ . v i 

 at length terete, knotted at the insertion of the leaves, roughish ^^^^' "?'^- Petioles 14 lines long. 



from rather adpressed scattered bristles ; leaves petiolate, oval- 

 oblong, acuminated, quite entire, 3-nerved, glabrous above, 

 bristly beneath, but especially on the nerves ; cymes trichoto- 

 mous ; tube of calyx hemispherical, glabrous, with 4 broad ob- 

 tuse lobes ; ovarium bristly at the apex. ^2 . S. Native of 

 Madagascar, ex herb. Juss. not of Cayenne, as mentioned by 

 Desrousseaux. Mdastoma articulkta, Desr. in Lam. diet. 4. p. 

 56. Capsule adnate to the calyx, opening at the apex. Seeds 

 angular, shining. Style filiform. Filaments glabrous, filiform. 

 Anthers linear, opening by one pore, rather shorter than their 

 connectives. 



^r^icM/a/^(/-stamened Rousseauxia. Shrub. 



Cult. See Mel&stoma for culture and propagation, p. 764. 



XLVL LEA'NDR A (in honour of — Leandro do Sacramento, 

 director of the botanic garden at Rio Janeiro, author of Nova 

 Plantarum Geneva, inserted in Act. Acad. Monach. vol. 7. 

 Raddi in mem. soc. ital. 1820. p. 6. D. C. prod. 3. p. 153.) 



villous on the outside, and smooth inside. 



St. Paul Leandra. Sh. 2 to 3 feet. 



3 L. umbellaVa (D. C. 1. c.) branches terete, and are, as 

 well as the petioles, densely clothed with velvety down ; ^^^^^^ 

 petiolate, ovate, acuminated, serrately ciliated, 7-nerved, clothed 

 with velvety down on both surfaces ; flowers in dense umbellate 

 heads ; bracteas oblong ; calyx beset with glandular h^^^^' "' 

 lobed, bearing 6 appendages on the outside similar to the lobes. 

 ' "^ Native of Brazil, in woods, in the low lands in the pro- 

 vince of Minas Geraes. Melastoma umbellatum, Schrank et 



Leaves 2-3 inches long. 



Peduncles and calyx thickly beset with capitate hairs. Lobes o 

 calyx length of the tube. P^fr«l« Kn^ar. anite. Anthers linear. 



Ij.S. 



Petals linear, acute 

 falcate. Connectives short. Genitals exserted. 

 ' Umbellate-RoviereH Leandra. Sh. 2 to 3 feet. 

 4 L. INVOLUCRA TA (D. C. prod. 3. p. 154.) branches terete, 

 and are, as well as the petioles, densely clothed with short ven e^y 

 down ; leaves petiolate, ovate, acuminated, serrately cuiate , ^ - 

 nerved, clothed with velvety down on both surfaces ; "^."^^J^ 

 dense heads; bracteas ovate; heads disposed in a termma^^^^ 

 nicle, like those of the preceding species ; calyx ^^^^ . i f 

 glandular hairs, appendiculated with 5 lobes on the ^"^^l^^. 



the inner ones. T, . S. Native of Brazil, in woods. -^^^*^ 



Perhaps the sarne 



as L. umbelldta, but the bracteas .are broader at the apex ; 

 of calyx a little longer, lobes shorter, petals narrower, ana 

 style is hairy at the base* 



Involucrated Leandra. Sh. 2 to 3 feet. 



T?.S. 

 toma involucritum, Schrank et Mart. mss. 



5 L. SERi'cEA (D. C. L c.) branches terete, and are, as 



well as 



