758 



MELASTOMACEiE. XXXIV. Osbeckia. 



Many -flowered Arthrostemma. Sh. S feet. 



Cult. Tlie shrubby species of this genus should be culti- unknown. 



pendages of calyx small. Tomentum velvety. Fruit and seeds 



vated and propagated in the manner of the species of Melds^ 

 toma, p. 764. The annual species in the manner of those of 

 Centradenia^ p- 766. 



Scurfy 



(D 



Sh, 1 to 2 feet. 



tetragonal, clothed with powdery tomentum ; leaves petiolate, 

 oblong-lanceolate, quite entire, 3-nerved, clothed with white vel- 

 XXXIV. OSBE'CKIA (in honour of Peter Osbeck, a vety tomentum beneath, glabrous above ; thyrse terminal ; brac- 



Swedish clergyman and naturalist, author of Dagbock Oefer en 

 Ostendyck resa, 1 vol. 8vo. Stockholm, 1757). Lin. 

 467. D. Don, in mem. soc. wern. 4. p. 292. 



no. 



gen. 

 D. C. prod. 3. 



teas hiding the calyx when young ; calyx velvety from small 

 stellate down : lobes or teeth 5 or 6, short, oblong ; anthers 

 rather dissimilar. 



T? 



Native of Brazil, in the province of 



P 



1S8. 



Lin. syst. Octo-Dec&ndria^ Monogynian Tube of calyx Mart 



St. Paul, in elevated dry fields. Rhexia oleaef olia, Schrank et } 



Petals purple, minutely ciliated- Anthers linear, 



ovate, usually clothed with stellate bristles or down ; lobes 4-5, falcate, long, beaked : having their connectives drawn out into a 



permanent or deciduous : bearing appendages between the lobes 

 on the outside of variovis sizes and forms. Petals 4-5. Sta- 

 mens 8-10 ; filaments glabrous ; anthers nearly equal, terminat- 



ligula each, which are sometimes bifurcate, and sometimes some- 

 what 2-lobed, Leaves 15-20 lines long, and 6-7 broad. 



/3, quaternifolia (D. C. 1. c.) young branches tetra- 



ing in short beaks, and having their connectives furnished with gonal, furfuraceous, and bearing glandular pili ; leaves on short 



2 short auricles at the base. Ovarium bristly at the apex. 

 Capsule 4-5-celled. Seeds cochleate. — Herbs, but usually sub- 



petioles, 3 or 4 in a whorl, oblong, blunt at the base, and acute 

 at the apex, 5-nerved, minutely dotted above, but clothed with 



Native of 



shrubs, natives of America, Africa, and Asia. Leaves quite en- white furfuraceous velvety down beneath. Tj 



tire, 8-5-nerved. Flowers terminal. This genus is perhaps Brazil, in the province of Minas Geraes, at the sides of woods 



divisible in several genera instead of sections. 



Sect. I. Micro'lepis (from fUKpog^ mikroSy small, and XcTrtc, 

 lepiSy a scale; so named on account of the small scale-like ap- 

 pendages between the lobes of the calyx). D. C. prod. 3. p. 139. 

 Tube of calyx ovate-oblong, urceolate, and constricted at the 

 apex; limb 5-cleft : teeth deciduous. Stamens 10. Appendages 



Mart 



Anthers long, linear, falcate, beaked: 



Petals purple, 



5 or 



between the lobes of the calyx small and ciliated. 

 South American. 



Species all 



1 O. urceola'ris (D. C. prod. 3. p. 139.) plant almost her- 

 baceous ; stems tetragonal ; leaves petiolate, oval, quite entire, 5- 

 nerved, clothed with villous tomentum on both surfaces ; panicles 



terminal and axillary ; calyx 5-toothed, with an ovate tube, which ^ ^ V' mickufhx i-la vx.. ^. i. c; suruuuy, .uu... ;;— — 



is constricted under the teeth ; appendages between the teeth of branches terete, scabrous from strigae ; leaves on f <>'■ * neti^^^^^^^ 



the calyx short and lacerately cilialed ; petals ciliated. 1/ . ? S. ^^^^^' quite entire, 5-nerved, scabrous on both ^^^^^^f ^^^ 



Nativ/of Rrazil. npnr Rio jLpirn. nL.\. ...n.nV.r\.. ^rhr.nh P^^ssed strigae, pale beneath; flowers sohtary, subcorymbose 



obovate-oblong. 



which have forked connectives. Ovarium bristly at the apex 



Down on calyx stellate. 



Olive-leaved Osbeckia. Sh. 1 to 2 feet. 



Sect. XL Ch^eto'lepis (from x"'^'?> cJiaite^ a bristle, and 

 XcTTiCj leptSi a scale ; there are stiff bristles between the lobes of 

 the calyx, which hold the place of the appendages). D. C. prod. 

 3. p. 140. Lobes of calyx 4, with as many stiff simple bristles 

 between the lobes on the outside, holding the place of appendages. 



American plants. 



5 O. microphy'lla (D. C. 1. c.) shrubby, much branched ; 



Native of Brazil, near Rio Janeiro. Rhexia urceolaris, Schrank 

 et Mart. mss. Petioles 6 lines long. Leaves 4 inches long. 

 Petals purple. Anthers linear-falcate, beaked, length of fila- 

 ments : having their connectives short, and tumid at the articula- 



pedicellate ; tube of calyx ovate, bristly at the apex ; ovarium 

 furnished with 8 bristles at the apex, iq . S. Native of Guada- 



loupe, on the mountains ; and near Santa Fe de Bogota. Rhexia 



Anthers ob- 



tion. Seeds cochleate, truncate at the base, striated longitudi- niicrophyila, Bonpl. rhex t. 2. Flowers yellow 



nally. 



r/rceofafe-calyxed Osbeckia- PL 1 foot, 



2 O. jucu'nda (D. C. 1. c.) shrubby, glabrous; branches 

 terete ; leaves petiolate, ovate-lanceolate, acuminated, quite en- 



tuse. Petals obovate. Lobes of calyx, as well as the appea 

 dages, permanent. 



tire, 3-nerved, or somewhat 5-nerved ; panicle terminal ; pedun- 

 cles and calyxes clothed with furfuraceous down; tube of calyx 



Small-leaved Osbectia. Sh. 1 foot. 



Sect. III. Ptero'lepis 



and 



urceolate ; petals oblong. 



^ 



S. Native of Brazil, in shady 



woods near Almada, in the province of Bahia. 



Schrank et Mart. mss. Leaves G-7 inches long, and 2 broad. 



PIS (from Ttrepov, pteron, a wing, a"" 

 XcTTtc, lepisy a scale ; in reference to the appendages between tne 



lobes of the calyx being pectinated). D. C. prod. 3. p. 140. ^ta- 

 P,. . . . , mens8-10. Calyx 4-5-cleft;lobespermanent,withtheappennages 



Kiiexia jucunaa, ^j^^^^^^ ^^^ j^^^^ elongated and pectinated.— American plants. 



Flowers 5-cleft, decandrous. 

 6 O. parnassifolia (D. C. prod. 3. p. 140.) shrubby, clothed 

 in every part with silky villi ; branches terete ; leaves sessile, 

 orbicular, rather cordate at the base, quite entire, 5-nerved »."^}^^ ^ 

 almost sessile, axillary, usually solitary, but sometimes termmal ana 

 aggregate ; calyx very hairy, with villous bristle-formed ^PFg' 



^ , g, w,*,.^, «>.«i„.„»v^u, *y-ijw**ti^, giauiuua dages between the lobes, and 5 ciliated coloured lobes. . ^ ' ^ 



above and shining, with impressed veins, clothed with white to- Native of Brazil, in stony grassy places, in the P^^^^^^^A 



Petals white, 3 or 4 times longer than the calycine teeth. Sta- 

 mens^ 10; filaments bluish. Anthers yellow, elongated, with 

 short beaks : 5 of which have their c<mnectives drawn out into a 

 little lateral sack, and those of the other 5 are not drawn out. 



Pleasant Osbeckia. Shrub 1 to 2 feet. 



3 O. pityrophy'lla (D. C. 1. c.) shrubby; leaves on very 

 short petioles, oblong-ovate, acuminated, 3-nerved, glabrous 



mentum beneath, as well as on the calyxes ; cymes few-flowered, Bahia. Rhexia parnassif 61ia, Martt et Schrank, mss. Lobes 

 * ' '" " " ■ - ■' ' - ' of calyx purplish, linear-oblong. Petals purple, obovate-c- 



neated. Style a little longer than the calyx. StaraP"« 

 known. Young leaves mucronate. Capsule 1-5-celled. 

 cochleate. 



terminal ; lobes of calyx acute, 3 times shorter than the ovate 

 tube ; petals acuminated. Tj . S. Native of Brazil, on high 

 dry mountains, in the province of Minas Geraes. Rhexia pity- 

 rophylla. Mart. herb. Rhexia acuminata, Schrank, mss. 



Seeds 



Shrub 

 branched ; branches tetragonal, with separable bark. Leaves 10 



lines long. Anthers falcate, without any beak. Style very 



long. Ovarium beset with small bristles at the apex. Ap- terete 



Farnassta-leaved Osbeckia- fehrub. i- 



7 O. STRiPHNocALYx (D. C. 1. c) shrubby ; branches near^J 

 •ete, and are, as well as the peduncles and under side 



