MELASTOMACEJ-;. XII. CAMBESSEDESIA. XIII. CH/ETOSTOMA. 



739 



nerved, smoothish ; cymes terminal, dichotomous ; flowers de- 

 candrous ; tube of calyx ovate, 3 times longer than the lobes, 

 which are lanceolate. Tj . S. Native of Brazil, in the pro- 

 vince of Bahia, at the elevation of 5000 feet. Rhexia purpurata, 

 Schrank et Mart. mss. Cymes subumbellate, and as if they 

 were involucrated by the 2 upper leaves ; the rest of the brae- 

 teas small, and lanceolate. Petals scarlet. Anthers bluntly 

 sagittate at the base. 



Purplish Cambessedesia. Shrub 1 to 2 feet. 



3 C. CORVMBOSA (D. C. 1. c.) shrubby; leaves petiolate, ob- 

 long, acute, quite entire, 5-nerved, glabrous above, clothed with 

 velvety tomentum beneath, and dotted from lacunse ; flowers 

 terminal, in cymose corymbs, decandrous ; petals acuminated. 

 ^ . S. Native of Brazil, at Itambe, in the province of Minas 

 Geraes, in bogs. Rhexia corymbosa, Mart, et Schrank, mss. 

 Branchlets tetragonal. Leaves 10-12 lines long, and 3-4 broad : 

 the lateral nerves hardly distinct. Bracteas glabrous. Calyx 

 glabrous ; lobes 5, lanceolate-subulate. Petals red, acute. 

 Anthers yellow, exserted, elongated, with the connectives not 

 drawn out ; filaments jointed in the middle. 



Corymbose-fiowered Cambessedesia. Shrub 1 foot. 



4 C. BALSAMI'FERA (D. C. 1. c.) shrubby, quite glabrous ; 

 branches dichotomous, terete ; leaves oblong, acutish at both 

 ends, dotted, quite entire, 3- nerved ; lateral nerves very small ; 

 flowers terminal, solitary, decandrous. {7 . S. Native of Bra- 

 zil, in the province of Bahia, on the tops of mountains, at the 

 elevation of 4000 or 5000 feet. Rhexia balsamifera, Mart, et 

 Schrank, mss. Leaves almost like those of Pliillyrea angus- 

 lifolia. Calyx bearing balsam ; tube obovate ; lobes acute. 

 Petals purple. Anthers yellow, apiculated by a beak : having the 

 connectives short, and drawn ovit into an obtuse flat auricle each. 



Balsam-bearing Cambessedesia. Shrub 1 to 2 feet. 



5 C. SINCORE'NSIS (D. C. prod. 3. p. 111.) shrubby, much 

 branched, quite glabrous ; branches somewhat tetragonal at the 

 apex ; leaves on very short petioles, oblong, acutish, quite 

 entire, one-nerved, hardly 3-nerved at the base, beset with 

 minute dots on both surfaces ; flowers nearly terminal, axil- 

 lary, almost sessile ; tube of calyx cylindrically obovate, 

 with 5 short teeth. Jj . S. Native of Brazil, on the alps 

 of Serra de Sincora, at the elevation of 4000 feet. Rhexia 

 resinosa, Schrank, mss. Rhexia Sincor6nsis, Mart. herb. 

 Leaves 4 lines long, and 1^ broad. Petals purple, obovate, not 

 ciliated. Anthers yellow, apiculated by long beaks, twice the 

 length of the connectives, which are expanded into an obtuse ap- 

 pendage each at the base. Genitals not longer than the petals. 



Sincora Cambessedesia. Shrub 1 to 2 feet. 



6 C. CRENULA'TA (D. C. 1. c.) shrubby, glabrous, clammy at 

 the tops ; branches tetragonally terete ; leaves sessile, ovate, 

 hardly 3 veined at the base, flat, length of the internodes, with 

 glandular, hardly crenated, margins ; flowers few, at the tops of 

 the branches, disposed in cymose corymbs ; calyx with an ovate 

 tube, and 5-6 linear acute lobes. Tj . S. Native of Brazil, in 

 alpine meadows, particularly on Serro Frio. Rhexia crenulata, 

 Mart, et Schrank, mss. Flowers purple. Anthers ovate, 

 beaked : with the connectives drawn out at the base into a crenate- 

 spatulate ligula each. Capsule ovate, glabrous. Seeds unknown. 



CVem//a/e-leaved Cambessedesia. Shrub 1 to 2 feet. 



7 C. ESPORA (D. C. 1. c.) plant suffruticose, erect, glabrous, 

 branched from the base ; branches somewhat tetragonal ; leaves 

 sessile, ovate-cordate, acute, sparingly serrated, 3-nerved ; 

 flowers on the short axillary branchlets, solitary, and therefore 

 disposed in a leafy elongated thyrse ; calyx turbinate, with 5 

 acute lobes ; petals lanceolate, acute ; anthers nearly alike. Jj . 

 S. Native of Brazil, in grassy bogs, in the provinces of St. 

 Paul, and Minas Geraes. Rhexia Espora, St. Hil. in Bonpl. 

 rhex. t. 58. Rhexia chamacdrifolia, Schrank et Mart. herb. 



Very like R. adamantium in habit and colour of flowers, but 

 differs in being glabrous in every part, in the petals being much 

 smaller and of a different form, in the anthers being obtuse, and 

 in their connectives not being drawn out. 



Far. ft, ilicifblia (D. C. prod. 3. p. 111.) stem simple, 

 straight, terete, velvety ; leaves ovate, in fascicles ; thyrse spi- 

 cate, cylindrical. J? . S. Native of Brazil, in the province of 

 Minas Geraes. Rhexia ilicifolia, Schrank et Mart. mss. Leaves 

 2 or 3 lines long : those of branches very short and nerveless, in 

 fascicles. Flowers yellow ; petals oval-oblong ; anthers fusees- 

 cent, elongated. 



Espora Cambessedesia. Shrub 1 to 2 feet. 



8 C. ADAMA'NTIUM (D. C. 1. c.) suffruticose, branched, pro- 

 cumbent, beset with scattered glandular pili ; branches tetra- 

 gonal, pilose, woolly at the knots ; leaves on short petioles, 

 ovate-lanceolate, somewhat 3-nerved, rather ciliately ser- 

 rated, and beset with glandular hairs ; thyrse terminal, crowded ; 

 calyx turbinate, with very short cordate lobes ; petals ovate, 

 acute ; anthers nearly similar. Jj . S. Native of Brazil, near 

 Tejuco, in sandy places on the Diamond Mountains. Rhexia 

 adamantium, St. Hil. in Bonpl. rhex. t. 60. Colour of petals 

 almost like that of a Tropce'olum. Anthers 10, oblong, obtuse, 

 5 of which are rather gibbous at the base. Capsule ovate-ob- 

 long, 3-valved, pilose at the apex. Seeds half ovate. 



Adamant Cambessedesia. Shrub procumbent. 



9 C. HILARIA'NA (D. C. 1. c.) suffruticose, glabrous, ascend- 

 ing ; branches tetragonal ; leaves on short petioles, oblong- 

 linear, bluntish, quite entire, or furnished with 1 or 2 teeth, 3- 

 nerved, bearing smaller leaves in their axils ; peduncles 1-3- 

 flowered, axillary, and terminal ; calyx bearing glandular hairs, 

 obovate, with 5 broad short mucronate lobes ; stamens rather 

 dissimilar. Tj . S. Native of Brazil, in the province of Minas 

 Geraes, in moist sandy places on the tops of the mountains. 

 Rhexia galioides, Schrank et Mart. mss. Rhexia Hilariana, 

 Kunth in Bonpl. rhex. t. 56. Rhexia suberosa, Spreng. syst. 2. 

 p. 308. Allied to R. adamantium in habit and colour of flowers, 

 but differs from that species in the longer and narrower leaves, 

 and in the much more loose panicle. 



St. Hilare's Cambessedesia. Shrub 1 to 2 feet. 



10 C. BIDENTA'TA (D. C. 1. c.) suffruticose; branches tetra- 

 gonal, divaricate ; leaves lanceolate, in fascicles, glabrous, biden- 

 tate ; corymbs panicled ; pedicels pilose ; petals ovate, acumi- 

 nated ; calyx muricated, 10-ribbed; ovarium 3-celled. Jj . S. 

 Native of Brazil, at Barra da Vareda, in open fields. Rhexia 

 bidentata, Nees et Mart. nov. act. bonn. 12. p. 53. Said to be 

 allied to C. Hilariana, and probably only a variety of that species 

 according to Kunth. 



Bidentate Cambessedesia. Shrub 1 foot. 

 Cult. See Meriania for culture and propagation, p. 733. All 

 the species are small elegant shrubs, deserving cultivation. 



XIII. CH&TO'STOMA (from X ai- n , cfiaite, a head of hair, 

 and arofia, stoma, a mouth ; in allusion to the calyx, which is 

 girded by a ring of stiff hairs round the mouth under the lobes 

 on the outside). D. C. prod. 3. p. 112. 



LIN. SYST. Octo-Decdndria, Monogynia. Calyx with a some- 

 what obovate turbinate tube, girded by a ring of stiff bristles on 

 the outside under the lobes ; limb 4-5-lobed ; lobes erect, pun- 

 gent. Petals 4-5. Anthers with very short 1 -pored beaks: 

 having their connectives not drawn out at the articulation, and 

 hardly gibbous. Capsule prismatic, longish, 4-5-angled. Seeds 

 unknown. Brazilian heath-like quite glabrous sub-shrubs. 

 Stems slender. Leaves crowded, dry, 1-nerved, acute, quite 

 entire, small. Flowers terminal, solitary. The habit of this 

 genus is very distinct, but its normal characters are not well 

 known. 

 5 B 2 



