748 



MELASTOMACEiE. XXVII. Tkicentrum. XXVIIL Marcetia. 



every part ; branches somewhat tetragonal ; leaves ovate, mu- 

 cronate, villous, 5-nerved ; flowers bibracteolate, on short pedi- 



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

 sandy places. Rhexia taxif olia, St. Hil. in Bonpl. rhex. t. 57, 



eels in the axils of the upper leaves. Tj * S. Native of Brazil. Flowers white, on pedicels, which are furnished with one bractea 



Calyx cylindrical, villous ; lobes 4, linear. Petals oblong, each ? 



Stamens exactly as in the following species 

 Oval-leaved Tricentrum. Sh. 1 foot. 



i3, cinerea (D. C. 1. c.) 



short cinereous down, h 



Native of Brazil, in the pro- 



2 T. ? IiEPtophy'llum (D. C* prod. 3. p. 123.) glabrous; vince of Minas Geraes, at the height of 4000 feet, in fields. 



stems procumbent, tetragonal ; leaves linear, 1 -nerved, serru- 

 lated at the apex ; flowers terminal, solitary. T2 • S. Native 

 on the banks of the Orinoco, near Maypures. Rhexia lepto- 



Mart 



Flowers purplish. 



Yew-leaved Marcetia. Sh. 1 to 2 feet. 



5 M. GLANDutosA (D. C. 1. c.) shrubby, much branched; 



phylla, Bonpl. rhex. t. 24. Habit very different from the first branches thickly beset with glandular hairs ; leaves sessile, oval 

 species, but the flowers and fruit, as far as known, are similar, oblong, but nearly lanceolate from the margins being reyolutc ; 

 Seeds unknown. Ovarium free. Style filiform. 



Slender 'leaved Tricentrum, Sh. procumbent. 



Cult* For culture and propagation see Lastdndra^ p. 752. 



MARCE 



cordate at the base, nerveless, crowded, ornamented with glan- 

 dular hairs ; flowers axillary ; pedicels short, bibracteolate in the 

 middle ; lobes of calyx subulate. ^2 • S. Native of Brazil, in 

 the province of Minas Geraes. Rhexia quadrivalvis, Mart. herb. 



M 



singular memoire on the eflTects of poison on living vegetables). 



Glandular Marcetia. Sh. 1 to 2 feet. 

 M 



il/. taxifoUa 



D. C. prod. 3. p. 124. 



Mono 



Tube of calyx oblong or 



cylindrical ; lobes 4, lanceolate. Petals 4, oval, acute. Stamens 



clothed with glandular down ; leaves sessile, oval-oblong from 

 the revolution of the margins, oblong, cordate at the base, downy, 

 not glandular, nerveless ; flowers axillary, almost sessile ; brac- 



8, equal ; anthers oblong, furnished with 2 tubercles at the base, teoles small, setaceous ; lobes of calyx short. ^ 



' " Ovarium free, glabrous. Style filiform; of Brazil. Rhexia Langsdorfiana, Kunth ex Mart. Flowen 



opening by one por 



Stigma dot-formed. Capsule 4-valved, 4-celled, about equal in 

 length to the tube of the calyx. Seeds cochleate. — Brazilian 

 shrubs. Branches terete. Leaves rather fleshy, oblong, usually 

 with revolute edges, cordate at the base, on very short petioles 

 or almost sessile, quite entire, usually nerveless. Flowers axil- 

 lary, solitary, almost sessile, bibracteate, white or reddish. 



1 M. DEcussA TA (D. C. 1. c.) suflTruticosc, branched ; leaves 

 sessile, ovate, rather cordate, bluntish, quite entire, 3-nerved at 

 the base, downy, as well as the branchlets and calyxes ; flowers 



Marcet 



Sh. 1 to 2 feet. 



purplish. 

 Pube 



7 M. TENuiFOLiA (D. C. 1. c.) shrubby, much brancnea; 



branches rather tetragonal, clothed with short hispid down; 

 leaves sessile, linear, nerveless, clothed with short velvety down, 

 revolute at the margins ; pedicels axillary, short, l-flowered,lur- 

 nished with 2 bracteas each. Tj . S. Native of Brazil. Khexia 

 tenuifolia. Mart. herb. Allied to M. taxifoUa, from the ^^h^te 



axillary, pedicellate : lobes of calyx lanceolate-subulate, hardly in the leaves being narrower and more spreading. 

 shorter than the tube ; petals oval, acute. Tj . S. Native of 

 Brazil, in the province of Bahia, on woody mountains, at the 



Fine-leaved Marcetia. Sh. 1 to 2 feet. 



height of 2000 feet. 



Leaves hardly 2-3 lines long. 



Mart 



M 

 der, dow^ny ; leaves 1 



(D. C. I.e.) suffruticose ; branches slen- 

 anceolate, but linear from the revolution of 



Genitals exserted. Stamens the edges, acute, nerveless, clothed with rough puDes 



alternately unequal, but similar to the rest. Anthers furnished with flowers axi 



caly* 



2 tubercles at the base. Seeds wrinkled, truncate at the base. 



Z)ccw55a/e-leaved Marcetia. Sh. 1 foot. 



2 M. coRDiGERA (D. C. 1. c.) shrubby, much branched; 

 branches hispid from bristles ; leaves sessile, cordate, when younfy 



^ 



Native of Brazil. Rhexia juniperina, Spreng. syst 

 Juniver-like Marcetia. Sh. 1 foot. 



P 



tia. C5n. 1 luuL. ^ rather 



-. ^ ^.*. ^*.»v>x.M, '«-u* v.k^ ov,^oixw, VV/I V4ciL^, VVlieil VI^UII^ «7 J.TX. J. AIKL^lVlO^li^ A (^U» V^. ItCySnrUUUj ,^ liAtlTP tf i* 



revolute at the margins, but at length becoming flat, and truly fleshy, oblong, cordate, with revolute margins, arid n g^. 

 heart-shaped, rather scabrous from minute glandular down ; they were sagittately cordate ; flowers axillary, almos ^^^^ ^^ 

 flowers axillary, pedicellate, solitary, disposed in a leafv raceme: Detals lanceolate, b* S. Native of Brazil, m the pro 



petals obliquely mucronate. Tj 



Native of Brazil, in the 



province of Rio Janeiro, on the Alps. Rhexia cordigera, Mart, 

 et Schrank, mss. Flowers white. Allied to M. taxif olia. 

 Heart-bearing Marcetia. Sh. 1 foot. 

 M. excoria'ta (D 



narrow, acute, acerose. 



_ b 



thers rather tumid at the base 



oJy* 



Minas Geraes. Rhexia tamariscina, Schrank et Mar . 



les, and calyxes rather downy; iop«! °' 

 acerose. Petals white. Stamens similar. 



• 1 ..!•-_- c„„^a ♦viinrate at iii'^ 



base 



leaves almost sessile, oblong, rather cordate at the base, obtuse folia. 



at the apex and mucronulate, densely clothed with down, some- TamarisTc-l'tke Marcetia. Sh. l^to 2 feet. 



Tvhat 3-nerved ; flowers axillary, pedicellate, disposed in short 

 leafy racemes ; anthers furnished with 2 tubercles at the base. 

 \} . S. Native of Brazil, on tht 



1 m1)le • lea^^ 

 M. ACERosA (D. C. 1. c.) sutlruticose, yery W^ '^^j 



i with velvetv down, oblong-linear, with re ^^ 



mountains 



and Tejuco. Rh6xia excoriata, Mart, et Schrank, mss. Bark the petals, which are orbicular, and hardly apicuia ^^ ^^^^ 



„. __.-., ^ ., . ^^^.^^ of Brazil, in the province of Minas Geraes, j, ^ 



or desert, in stony sandy fields. ^^''^-'^ acerosa, .. ,^, 



Mart 



at length separating from the stem. Leaves with a bluntish mucrone, 

 covered with resiniferous down. Teeth of calyx linear. Petals 

 oblong-obovate, rose-coloured. Genitals exserted. Seeds hardly 

 wrinkled, truncate at the base. Branches fi 



Excoriated Marcetia. Sh. 2 to 3 feet. Petals puri 



4 M. TAXiFOLiA (D. C. I. c.) shrubby, much branched, clothed differs in th 

 with glandular down m every part ; leaves nearly sessile, oval- Tetratheca. 

 oblong, nearly linear, cordate at the base, with the margins re- Ar^^^i^ i, 



volute ; flowers axillary, solitary ; calyx covered with glandular 

 hairs, with 4 oblong-linear lobes ; petals obliquely mucronate. 



A small heath-like shrub 



Anthers ovate, bar 



looC 



rled 



s ovaie, iio»"v — , Ipaven, 



M. taxif olia from ^^J'^'Z 



arcetia 



Sh. 1 foot. 



kk» 



11 M.SERTULA^RiA (D.C.I, c.) shrubby, ur-M 

 and leaves rough from thick glandular down 



edjbnuK^ 



leal 



