738 



MELASTOMACE^E. IX. RHYNCHANTHERA. X. MACAIREA. XI. BUCQUETIA. XII. CAMBESSEDESIA. 



tetragonal at the apex ; leaves on short petioles, serrulated, 3- 

 nerved ; middle ones linear ; upper ones lanceolate or obovate ; 

 flowers axillary, on short pedicels, solitary ; tube of calyx ovate, 

 pilose, shorter than the lobes, which are 5, acute and linear. Q. 

 S. Native of Brazil, in the province of Bahia in low moist 

 fields. Root fibrous. Leaves sparingly pilose. Anthers linear, 

 falcate, beaked : having their connectives tumid at the articula- 

 tion, and shortly auricled, not half the length of the anthers ; fila- 

 ments Hat. 



Jl'il/ow-leaved Rhynchanthera. PI. 1 foot. 



Cult. The species of Rhynchanthera being natives of marshes 

 and bogs require to be kept moist, especially through the sum- 

 mer ; for this purpose the pots in which the species are grown 

 should be kept in pans filled with water ; in other respects their 

 culture and propagation is the same as that of Meriania, see 

 p. 732. 



X. MACAI'REA (dedicated by De Candolle to M. Isr. Ma- 

 caire, who has written on vegetable chemistry, and who has 

 published in the Memoirs of the Natural History Society of 

 Geneva, some curious remarks upon the influence of narcotic 

 poisons upon living vegetables, &c.) D. C. prod. 3. p. 109. 



LIN. SYST. Octdndria, Monogynia. Tube of calyx ovate ; 

 lobes 4, permanent. Petals 4, obovate. Stamens 8, unequal ; 

 the 4 longer ones bearing one series of glands on the inner side 

 at the apex ; the 4 shorter ones smoothish. Anthers linear, elon- 

 gated, opening by one pore, in the longer ones the connectives are 

 elongated and stipe-formed, but in all unequally dilated at the 

 base. Ovarium free, ovate, beset with glandular bristles. Style 

 filiform. Capsule 4-celled, clothed by the calyx. Seeds ovate, 

 somewhat truncate at the hylum. South American shrubs, with 

 terete branches. Petioles and young leaves clothed with rufous 

 villi. Leaves petiolate, ovate, mucronate, coriaceous, quite en- 

 tire, glabrous above, but rather velvety beneath even in the 

 adult state, at first sight feather-nerved, but there is sometimes 

 a marginal nerve on each side ; in this case the leaves are some- 

 what 3-nerved. Thyrse of flowers panicled and very villous. 

 Flowers white, according to the dried specimens. This genus is 

 analogous to Lasidndra, but differs from it in the flowers being 

 octandrous, and in the seeds being ovate. 



1 M. THYRSII-LORA (D. C. 1. c.) branchlets terete, clothed with 

 short adpressed rufous down ; leaves petiolate, oval, rosulate, 

 glabrous above, but clothed with short rufous pubescence be- 

 neath, 3-nerved ; lateral nerves slender, and approximating the 

 margin of the leaf; thyrse panicled ; calyx clothed with adpres- 

 sed short rufous down. Ij . S. Native of Brazil. 



Thyrse-Jlowered Macairea. Shrub 5 to 6 feet. 



2 M. RUFE'SCENS (D. C. 1. c.) branches bluntly tetragonal ; 

 petioles, panicles, calyxes, and young leaves clothed with long 

 rufous villi ; leaves petiolate, oval, coriaceous, glabrous above, 

 but clothed with deciduous villi beneath, 3-nerved : lateral nerves 

 slender, and near the margins of the leaf; thyrse panicled ; 

 calyx villous, with narrow acute lobes. J? . S. Native of Bra- 

 zil, in the province of Rio Negro, on mount Araracoara. Rhexia 

 anomala, Schrank et Mart. mss. 



Riifescent Macairea. Shrub 3 to 6 feet. 



3 M. RA'DULA (D. C. 1. c.) shrubby ; branches tetragonal ; 

 calyxes and linder side of leaves clothed with rusty hairs ; leaves 

 elliptic, quite entire, coriaceous, 5-nerved, strigose above ; 

 flowers in corymbose fascicles. J? . S. Native of Brazil. 

 Rhexia radula, Bonpl. rhex. p. 107. t. 41. Lobes of calyx 

 linear, acute, longer than the tube. Petals oval, dark purple. 

 Style filiform, curved, hardly thicker at the apex. Calyx clothed 

 with rufous villi, 4-cleft. Filaments clothed with glandular pili. 



Rasp-\ea\ed. Macairea. Shrub 2 to 4 feet. 



4 M. ADENOSTE'MON (D. C. 1. c.) shrubby ; hranches nearly 



terete ; petioles, peduncles, and calyxes clothed with stiff" villi ; 

 leaves petiolate, obovate, 3-nerved, echinated by strong strigse 

 above, hairy beneath ; panicle terminal ; lobes of calyx 5, linear, 

 subulate ; filaments bearing stipitate glands. Jj . S. Native 

 of Brazil, in fields near Salgada. D. C. coll. 1. t. 4 Lateral 

 nerves near the edge of the leaf. Leaves obtuse, when young 

 apiculated. Flowers small, purple. Anthers 8, having their 

 connectives short and biauriculate at the base. 



Var. /3, vrsinn (Schrank et Mart. herb, ex D. C. 1. c.) leaves 

 oblong. Tj . S. Native of the province of Minas Geraes, in 

 calcareous places. 



Glandular-stamencd Macairea. Shrub 4 to 6 feet. 



Cult. For the culture and propagation of the species of this 

 genus see Meriania, p. 733. 



XI. BUCQUETIA (dedicated by De Candolle to M. Buc- 

 quet, author of introduction a 1'etude des corps naturels tires du 

 regne vegetal, 2 vol. 8vo. Paris. 1773). D. C. prod. 3. p. 110. 



LIN. SYST. Octdndria, Monogynia. Tube of calyx globose ; 

 lobes 4, nearly triangular, hardly acute, permanent. Petals 4, 

 obovate. Stamens 8, equal ; filaments glabrous ; anthers ob- 

 long, opening by one pore at the apex, without auricles at the 

 base; the connectives hardly perspicuous. Style filiform. Ova- 

 rium free, somewhat thickened at the tops of the valves, trun- 

 cate, and furnished with 4 tubercles. Capsule 4-celled. Seeds 

 cuneated, angular. A shrub, native of New Granada. Branches 

 clammy. Leaves on short petioles, elliptic, 3-nerved, smooth, 

 almost quite entire. Pedicels tern at the tops of the branches. 

 Habit ofOsbeckia or Arthrostemma, but differs in the seeds being 

 angular, not cochleate. Flowers violaceous. 



1 B. GLUTINOSA (D. C. 1. c.) ^ . S. Native at the bottom 

 of the Andes about Quindiu. Rhexia glutinosa, Bonpl. rhex. 

 t. 17. Osbeckia glutinosa, Spreng. syst. 2. p. 313. 



Clammy Bucquetia. Shrub 4 to G feet. 



Cult. For culture and propagation see Meriania, p. 733. 



XII. CAMBESSEDE'SIA (in honour of James Cambessedes, 

 coadjutor of Auguste St. Hilaire, in his Flora Brasiliae meridio- 

 nalis, and author of several botanical memoirs. D. C. prod. 3. 

 p. 1.1 6. 



LIN. SYST. Decandria, Monogynia. Tube of calyx globose or 

 obovate, hardly constricted under the limb ; lobes 5, narrow, 

 acute, permanent. Petals 5, obovate. Stamens 10; anthers 

 equal in size and shape, linear, falcate, somewhat beaked, gib- 

 bously auricled at the base ; having the connectives hardly per- 

 spicuous, and drawn out into an undivided obtuse auricle at the 

 base, of various lengths. Style filiform. Capsule ovate, glo- 

 bose, 3-celled. Seeds angular or ovate, with the hylum linear. 

 Brazilian subshrubs, for the most part glabrous. Leaves ses- 

 sile. Flowers sometimes purple, sometimes copper-coloured, 

 as in Tropce'olum. 



1 C. LATE'-VENO'SA (D. C. 1. c.) suffruticose ; leaves sessile, 

 nearly orbicular, cordate, ciliately fringed, serrated, blistered 

 on the upper surface, reticulated by broad flat veins beneath, 

 clothed with short velvety down on both surfaces ; branches 

 of cyme many flowered, opposite, divaricate ; flowers decan- 

 drous ; tube of calyx ovate, coarctate at the apex, longer than 

 the lobes, which are subulate. Vj . S. Native of Brazil, in the 

 province of Minas Geraes, on mountains at the height of 3500 

 feet. Rhexia Bucardia, Schrank, mss. R. late-venosa, Mart, 

 herb. Flowers red, pedicellate. Calyx when young sparingly 

 pilose. Stamens equal among themselves. Anthers falcate, 

 gradually beaked. Seeds oblong, minutely tuberculated ; the 

 hylum linear. 



Broad-veined-]eaved Carabessedesia. Shrub 1 foot. 



2 C. PURPURA V TA (D. C. prod. 1. c.) shrubby, quite glabrous ; 

 leaves sessile, orbicularly reniform, quite entire, somewhat 5- 



