MELASTOMACE/E. IV. LAVOISIERA. V. DAVYA. VI. GRAFFENRIEDA. 



735 



alternate ones having longer connectives than the others. An- 

 thers bluntly beaked. Cells of capsule equal in number to the 

 petals. 



Dotted-\ea\eA Lavoisiera. Shrub 1 to 2 feet. 



1 -2 L. ITAMBA'NA (D. C. 1. c.) shrubby, dichotomous, quite 

 glabrous ; branches rather angular ; leaves sessile, imbricated in 

 4 rows, ovate, hardly stem-clasping, attenuated at both ends, 

 rather serrated, 1-nerved, lateral veins almost obsolete; flowers 

 terminal, solitary, sessile ; calyx dotted with white, having a 

 broad turbinate tube, and 6-7 oval lobes, which are about equal 

 in length to the tube ; anthers dissimilar. T? . S. Native of 

 Brazil, on the high mountains of Itambe and Serro Frio, in the 

 province of Minas Geraes. Rhexia Itambana, Mart, et Schrank, 

 mss. Petals obovate-oblong, much longer than cither the calyx 

 or stamens. Anthers like those of L. punctata. 



Itambe Lavoisiera. Shrub 1 to 2 feet. 



13 L. FIRMULA (D. C. 1. c.) shrubby, branched, almost quite 

 glabrous ; branches bluntly tetragonal ; leaves sessile, half stem- 

 clasping, oval, acutish, quite entire, 1-nerved, lateral veins ob- 

 solete ; flowers terminal, solitary, sessile ; tube of calyx cylin- 

 drical, rather ribbed ; limb campanulate, 6-cleft ; anthers dissi- 

 milar. J? . S. Native of Brazil, on the high mountains of 

 Itambe and Serro Frio. Rhexia finnula, Mart, et Schrank, 

 ms. Leaves few, beset with scattered glandular bristles in the 

 disk and on the edges, the rest quite glabrous. 



J'irm Lavoisiera. Shrub 2 to 4 feet. 



14 L. PULCHB'RRIMA (D. C. 1. c. p. 104.) shrubby, dichoto- 

 mous, quite glabrous ; branches nearly terete, rather glaucous ; 

 leaves sessile, half stem-clasping, ovate-lanceolate, acute, quite 

 entire, many veined, with 3 of the veins more elevated than the 

 rest ; flowers terminal, solitary ; tube of calyx ovate, twice the 

 length of the lobes, which are 6-10 ovate, acute ; anthers dissi- 

 milar. Jj . S. Native of Brazil, in the province of Minas 

 Geraes, in elevated fields. Rhexia pulcherrima, Mart, et Schrank, 

 mss. Leaves deflexed. Flowers purple. Anthers ovate, with 

 short blunt beaks, the alternate ones with long connectives, 

 which are tumid at the base. 



Very-fair Lavoisiera. Shrub 2 to 4 feet. 



15 L. LINIFOLIA (D. C. 1. c.) shrubby, much branched, gla- 

 brous ; leaves on short petioles, linear, quite entire, nerveless ; 

 flowers solitary, almost sessile, axillary or terminal ; tube of calyx 

 turbinate, beset with glandular dots, shorter than the lobes, 

 which are subulate ; petals obovate, when young apiculated ; 

 anthers dissimilar. fj . S. Native of Brazil in moist meadows, 

 in the province of Minas Geraes, at Serro Frio. Rhexia lini- 

 folia, Mart, et Schrank, mss. Anthers 10, oblong, terminated by 

 a blunt beak, in 5 of them the connective is rather long, and 

 hardly tumid at the articulation, in the other 5 it is drawn out 

 into a blunt appendage. 



Flax-leaved Lavoisiera. Shrub 1 to 2 feet. 



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

 All the species are delicate elegant plants, well deserving culti- 

 vation. 



V. DA'VYA (named by De Candolle in honour of the cele- 

 brated chemist, Sir Humphry Davy). D. C. prod. 3. p. 105. 



LIN. SYST. Deca-Dtxtccandria, Munogynia. Calyx with a cam- 

 panulate or ovate-oblong tube ; teeth 10-12, connected into a 

 membranous entire limb. Petals 5-6. Anthers beaked, opening 

 by one pore, having the connectives drawn out into an elongated 

 simple spur, which is sometimes furnished with 2-3 bristles at 

 the apex. Ovarium free, globose or oblong, depressed and 

 glabrous at the apex. Style filiform. Capsule 5-celled. Seeds 

 unknown. Shrubs or trees, natives of South America, with the 

 habit of Banisleria. Leaves petiolate, oval, 5-nerved, almost 

 glabrous. Flowers corymbose or panicled, yellow. The calyx 



agrees with Meriania, but the habit and colour of the flowers are 

 different. 



1 D. PANICULA'TA (D. C. 1. c.) branches terete, tomentose at 

 the apex, as well as the petioles and middle nerve of the leaves, 

 from thick fascicles of pili ; leaves petiolate, ovate, acuminated, 

 quite entire, 5-nerved, glabrous, except on the middle nerve ; 

 corymbs terminal, trifid at the base ; pedicels subumbellate ; tube 

 of calyx ribbed, campanulate ; anthers 10, 5 of which are furnished 

 with a somewhat spatulate obtuse spur each, and the other 5 

 with a shorter, somewhat cylindrical spur each. Tj . S. Native 

 of Brazil, in woods near Rio Janeiro. Rhexia paniculatn, Mart. 

 herb, but not Buch. Petals 5-6, yellow, obovate. Alternate 

 anthers longer, with the appendages copper-coloured. 



Panicled-ftoviereA Davya. Shrub 2 to 4 feet. 



2 D. GLA'BRA (D. C. prod. 3. p. 105.) quite glabrous in every 

 part ; branches bluntly tetragonal, hardly terete ; leaves petio- 

 late, elliptic, attenuated at the base, acuminated at the apex, ">- 

 nerved, quite entire ; raceme terminal, somewhat panicled, few- 

 flowered ; calyx campanulate, bluntly 5-lobed ; anthers with a 

 long copper-coloured spur each. Tj . S. Native of Brazil. 

 Flowers yellow. 



Glabrous Davya. Shrub 2 to 3 feet. 



3 D. GUIANE'NSIS (D. C. 1. c.) branchlets teretely tetragonal, 

 clothed with deciduous brown bristly down, as well as the pe- 

 tioles, panicles, and leaves when in a young state ; leaves petio- 

 late, ovate, acuminated, somewhat crenulated, 5-nerved ; nerves 

 beset with rufous bristles, the rest glabrous ; panicle terminal, 

 with its branchlets many-flowered and umbelliferous at the apex ; 

 tube of calyx oval-oblong, somewhat urceolate ; spurs of anthers 

 bearing many bristles at the apex. f? . S. Native of French 

 Guiana. D. C. coll. 1. t. 3. Topobea paniculata, Rich. herb. 

 Flowers pale yellow. Stem 10 inches in diameter, and 20 feet in 

 height. 



Guiana Davya. Tree 20 feet. 



4 D. PERUVIA'NA (D. C. prod. 3. p. 105.) branchlets some- 

 what compressedly terete, hardly terete ; petioles, panicles, and 

 young leaves clothed with powdery flocky down ; leaves on long 

 petioles, ovate, quite entire, abruptly acuminated, 5-nerved ; 

 panicle terminal, having its branches opposite and many-flow- 

 ered, and its branchlets 3-flowered; calyx bluntly 5-toothed. 



fj . S. Native of Peru, near Cochera. Petals yellowish red. 

 Petioles nearly 2 inches long. 



Peruvian Davya. Shrub 5 to 6 feet. 



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

 Plants worth cultivating for their beauty. 



VI. GRAFFENRIE'DA (this name has been given by De 

 Candolle to recall the labours of Fr. L. de Graflfenried, editor of 

 J. Bauhin's Historiae Plantarum). D. C. prod. 3. p. 105. 



LIN. SYST. Decandria, Monogynia. Tube of calyx oblong ; 

 its limb campanulate and bluntly 5-toothed. Petals 5, obovate. 

 Stamens 10 ; anthers linear, acute, opening by one pore, fur- 

 nished with a simple appendage at the base. Style filiform. 

 Ovarium free, not bristly at the apex, but furnished with some- 

 thing like 5 tubercles. Capsule ovate, 5-valved, opening at 

 the apex. Seeds angular, straight. Shrubs, with the habit 

 almost of Diplovliita, but differs in the bracteas being absent, in 

 the fruit dehiscing at the apex, and in the different formed ap- 

 pendages of the anthers. 



1. Anthers furnished with a setaceous appendage each. Teeth 

 of calyx very short and blunt. Fruit not umbilicate at the apex. 



1 G. ROTUNDIFOLIA (D. C. 1. c.) branchlets terete, glabrous ; 

 leaves on short petioles, orbicular, somewhat cordate, quite en- 

 tire, glabrous and shining above, but powdery beneath, 3-nerved, 

 the lateral nerves approximating the margin ; thyrse panicled, 



