738 



ASTOMACE^. IX. Rhynchanthera. X. Macairea. XI. Bucquetia. XII. Cambessedesia. 



tetragonal at the apex ; leaves on short petioles, serrulated, 3- terete ; petioles, peduncles, and calyxes clothed with stiff villi; 



nerved; middle ones linear ; upper ones lanceolate or obovate ; leaves petiolate, obovate, 3-nerved, echinated by strong strigae 



flowers axillary, on short pedicels, solitary ; tube of calyx ovate, above, hairy beneath ; panicle terminal ; lobes of calyx 5, linear, 



ilose, shorter than the lobes, which are 5, acute and linear. ©. subulate ; filaments bearing stipitate glands. Tj . S. Native 



Native of Brazil, in the province of Bahia in low moist of Brazil, in fields near Salgada. D. C. coll. 1. t. 4 Lateral 



fields. Root fibrous. Leaves sparingly pilose. Anthers linear, nerves near the edge of the leaf. Leaves obtuse, when young 



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

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

 ments flat. 



Willow-leaved Rhynchanthera. PI. 1 foot. 



Cult. The species oi 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 



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

 connectives short and biauriculate at the base. 



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



T2 . S. Native of the province of Minas Geraes, in 



oblong. 



should be kept in pans filled with water ; in other respects their genus see Meridniaf p. 733. 



calcareous places. 



Glandular-staviened Macairea. .Shrub 4 to 6 feet. 



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



culture and propagation is the same as that of Merianiay 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 cuneated angular 



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



quet, author of introduction ^I'etude des corps naturels tires du 

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



Tube of calyx globose ; 

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



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. Cnnsnle 4-celled. Seeds 



Lin. syst. Octdndriuy *Monogynta. 

 3es 4, 

 obovate. 



Capsule 4-celled. 

 A shrub, native of New Granada. Branches 



at the apex ; the 4 shorter ones smoothish. Anthers linear, elon- ^^^ j^^^^^ ^^ ^^^^^ '^eixoXes, elliptic, 3-nerved, smooth, 



gated, opening by one pore, in the longer ones the connectives ar^ almost quite entire. Pedicels tefn at the tops of the branches. 



Habit oWsbeckia or Arthrostemma, but differs in the seeds being 

 angular, not cochleate. Flowers violaceous. 



\ B. GLUTiNosA (D. C. 1. c.) T2 . S. Nativc at the bottom 

 of the Andes about Quindiu. Rh^xia glutinosa, Bonpl. rhex. 

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

 Clammy Bucquetia. Shrub 4 to 6 feet. 

 Cult, For culture and propagation see Meridniay 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. 8* 

 p. 116. 



Lin. SYST. DecdndriuyMonog^nia. Tube of calyx globose or 

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



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



glabrous above, but clothed with short rufous pubescence be- equal in size and shape, linear, falcate, somewhat beaked, gib- 



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. thyrsifl6ra (D. C. 1. c.) branchlets terete, clothed with 

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



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

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

 sed short rufous down. T2 • S. Native of Brazil. 



Thyrse-Jlowered Macairea. Shrub 5 to 6 feet. 



2 M. rufe'scens (D. C. J. 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, Tj , S. Native of Bra- 

 zil, in the province of Rio Negro, on mount Araracoara. Rhexia clothed with short velvety down on both 



bously auricled at the base ; having the connectives hardly per 

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

 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 c 



as in Tropce'olum. 



anomala, Schrank et Mart. mss. 



Rvfescent Macairea. Shrub S to 6 feet. 



3 M. ra'dula (D. C. 1. c.) shrubby ; branches tetragonal ; 

 calyxes and underside of leaves clothed with rusty hairs; leaves 

 elliptic, 



flowers in corymbose fascicles. 



opper-coloured, 



1 C. LATE^-VENO^SA (D. C. 1. c.) suffruticosc ; leaves sessile^ 

 nearly orbicular, cordate, ciliately fringed, serrated, bhstere 

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



* ^ ^ surfaces ; branches 



flowers decan- 



of cyme many flowered, opposite, divaricate ; flowers u 

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



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



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

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

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

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



i?fl5p-leaved Macairea. Shrub 2 to 4 feet. 



4 M. ai>enoste'mon (D. C. 1. c.) shrubby ; branches nearly 



1 



the lobes, which are subulate. Tj . S. Native of ^^^^'YJ^oo 

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

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



pedicellate. Caly:! 



]ual among thems^. — - i «j. 



gradually beaked. Seeds oblong, minutely tuberculatea , 



v-nv.t,tu, aiiigi^ac auijyt: j icct. jvucxia x>ucaruia, ocnranK, HISS. •»••• '"^^ — ' '-.jyly 



T2. S. Native of Brazil, herb. Flowers red, pedicellate. Calyx when young sparmg J 



pilose. Stamens equal among 



themselves. Anthers 



the 



hylum linear. 



^Toad-veinedAeaved Cambessedesia. Shrub 1 foot. , 



2 C. purpura^xa (D. C. prod. 1. c.) shrubby, V^'^^^^^^5. 

 leaves sessile, orbicularly reniform, quite entire, some 



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