RUBIACE^E. CCXV. RUBIA. 



645 



Oliveir's Madder. PI. straggling. 



20 R. THUNBE'RGII (D. C. prod. 4. p. 590.) plant glabrous in 

 every part ; leaves usually 4 in a whorl. Native of the Cape of 

 Good Hope. R. lac' vis, Thunb. fl. cap. 151. but not of Poir. 

 The rest unknown. 



Tkunberg's Madder. PI. straggling. 



H. InvolucralfB (the flowers of the plants contained in this 

 section are involucrated by bracteas). D. C. prod. 4. p. 590. 

 Peduncles axillary, bearing each 4 bracteas in a whorl, which 

 constitute an involucrum to thejloners. Flowers 1-3, rising from 

 each involucrum, sessile, or pedicellate, usually tetramerous. 

 Diffuse prostrate plants, all natives of America, which probably 

 should be joined with Gdlium according to A. Richard. 



* Berries glabrous. Leaves 1 -nerved. 



SIR. WALTE'RI (D. C. prod. 4. p. 590.) stems tetragonal, 

 smooth on the angles, and pilose on the sides ; leaves ovate, 

 membranous, rather pilose on both surfaces while young, 

 but having the keel and margins scabrous in the adult state ; 

 bracteas ovate, acute ; flowers solitary from the involucra ; fruit 

 glabrous, pedicellate. I/ . H. Native of Carolina and Florida, 

 in shady places. R. peregrina, Walt. car. p. 86. but not of Lin. 

 R. Brownei, Michx. fl. bor. amer. 1. p. 81. exclusive of the 

 syn. of Browne. R. Techensis, Rafin. fl. lud. p. 76. ? Flowers 

 small, yellow, tetramerous. Fruit blackish. 



Walter's Madder, PI. straggling. 



22 R. GUADALUPE'NSIS (Spreng. syst. 1. p. 397.) stems te- 

 tragonal, rough along the angles at the base ; leaves oblong, mu- 

 cronate, attenuated at the base, having the margins and keel 

 prickly ; peduncles axillary, shorter than the leaves, 1 -flowered ; 

 flower sessile among the bracteas, which are oblong ; berries 

 scabrous. Tf.. S. Native of Guadaloupe, where it was col- 

 lected by Badier and Bertero. 



Guadaloupe Madder. PI. straggling. 



23 R. INDECO'RA (Cham, et Schlecht. in Linnaea. 3. p. 229.) 

 stems tetragonal, scabrous from pili ; leaves oblong, somewhat 



cuneated, obtuse, mucronate, membranous, remotely pilose on 

 the nerve beneath and margins ; peduncles axillary, solitary, op- 

 posite, 1 -flowered ; bracteas lanceolate; ovarium pilose; berries 

 egg-shaped, glabrous, sessile within the involucra. I/ . F. 

 Native of the south of Brazil. 



Indecorous Madder. PI. straggling. 



24 R. CHILE'NSIS (Mol. chil. 118. ed. gall. p. 330. but not of 

 Willd.) stems smooth, tetragonal while young, but at length be- 

 coming terete and erectish ; leaves oblong-linear, mucronate, 

 pilose on the nerve and margins ; peduncles axillary, opposite, 

 1 -flowered, a little longer than the leaves, hairy at top, as well 

 as the bracteas. I/ . F. Native of Chili, near Rancagua and 

 Valparaiso, where it was collected by Bertero, who asserts that 

 it is the Relbun of the natives. Nearly allied to R. indecora. 



Chili Madder. PI. straggling. 



25 R. RAMOSISSIMA (Pohl, in litt. ex D. C. prod. 4. p. 591.) 

 stems tetragonal, rather hairy along the angles ; leaves oblong, 

 obtuse, rather cuneated at the base, 1 -nerved, rather pilose be- 

 neath and glabrous above, and shining ; peduncles axillary, 

 length of leaves, 1-flowered; bracteas oval, glabrous; berry 

 .sessile, within the involucrum, glabrous. !(.. G. Native of 



Brazil, where it was collected by Pohl. Herb becoming black 

 on drying. 



Much-branched Madder. PI. straggling. 



26 R. VALANTIOIDES (Cham, et Schlecht. in Linnaea. 3. p. 

 231.) stems tetragonal, pilose along the angles ; leaves sessile, 

 ovate, acute, membranous, 3-nerved, pilose on the margins and 

 nerves ; peduncles axillary, verticillate, shorter than the leaves, 

 1-flowered; bracteas ovate-oblong; flower sessile within the 



involucrum. I/ . F. Native of Brazil. Stem scabrous from the 

 bases of the hairs remaining. Corolla pilose. Berries glabrous. 

 Valantia-like Madder. PI. straggling. 



27 R. NI'TIDA (H. B. et Kunth, nov. gen. 3. p. 339. t. 280.) 

 stems tetragonal, beset with reflexed hairs along the angles ; 

 leaves elliptic, bluntish, with revolute edges, glabrous above and 

 shining, and rather hairy beneath ; peduncles axillary, 1-flower- 

 ed, opposite, twice the length of the leaves ; flower sessile, 

 within the involucrum ; berries glabrous. 7f..F. Native at the 

 foot of the burning mount Pichincha, near Quito. Allied to R. 

 Walleri. 



Nitid-leaved Madder. PI. straggling. 



28 R. VILIS (Cham, et Schlecht. in Linnaea. 3. p. 230.) gla- 

 brous ; stems tetragonal, scabrous from retrograde bristles on the 

 angles, and on the nerves and margins of the leaves ; leaves ob- 

 long, obtuse, hardly attenuated at the base, rather mucronate, 

 membranous ; peduncles axillary, verticillate, 3-flowered, length 

 of leaves : the middle flower sessile ; bracteas oblong, acute. 

 H.. F. Native of the south of Brazil. Berries globose. 



Vile Madder. PI. straggling. 



29 R. CILIA'TA (D. C. prod. 4. p. 591.) stems procumbent, 

 much branched, tetragonal, glabrous ; leaves 4 in a whorl, on 

 short petioles, linear-lanceolate, ciliated, reflexed ; peduncles 

 axillary, solitary, filiform, 1-flowered, length of leaves, bearing 4 

 verticillate leaves at the apex ; flower sessile, within the invo- 

 lucrum ; fruit glabrous. }/ . F. Native of Peru, on arid hills. 

 Galium ciliatum, Ruiz et Pav. fl. per. 1. p. 59. Galium involu- 

 cratum, H. B. et Kunth, nov. gen. amer. 3, p. 334. Flowers 

 purple. Fruit nutant. Perhaps a species of Rubia. 



Ciliated-]eaved Madder. PI. procumbent. 



30 R. MONA'NTHA (D. C. prod. 4. p. 591.) stems procum- 

 bent, much branched, tetragonal, smoothish ; leaves oval or 

 ovate-oblong, acutish, ciliated with long hairs, hispid above ; 

 peduncles axillary, solitary, 1-flowered, bearing each 4 leaves or 

 bracteas just under the flower ; flower sessile, within the invo- 

 lucrum ; fruit glabrous, smooth. 1 . F. Native of Peru, 

 where it was collected by Haenke. Galium monanthon, Bartl. 

 in herb. Haenke. This species is nearly allied to R. cilidta. 



One-flonered Madder. PI. procumbent. 



31 R. OVA'LIS (D. C. 1. c.) stems climbing a little, tetragonal, 

 hairy ; leaves 4 in a whorl, oblong-oval, acuminated, equal, at 

 length reflexed ; peduncles axillary, 1-flowered, a little shorter 

 than the leaves, bearing 4 oval acute bracteas at top under the 

 flower ; fruit glabrous. 1 . F. Native of Peru, among rub- 

 bish. Galium ova'e, Ruiz et Pav. fl. per. 1. p. 59. 



OsrtJ-leaved Madder. PI. climbing. 



32 R. CRO'CEA (D. C. 1. .c.) stems procumbent, branched; 

 branches tetragonal ; leaves 4 in a whorl, linear, ciliated, rather 

 scabrous beneath ; peduncles axillary, short, 1-flowered, bearing 

 4 leaves at the apex ; fruit glabrous. Native of Peru, at Tarma 

 and Huanaco, on arid declivities. Galium croceum, Ruiz et 

 Pav. fl. per. p. 126. Flowers 3-4-cleft. Fruit of a reddish 

 copper-colour. 



5ojfro-coloured-fruited Madder. PI. procumbent. 



33 R. LXVIGA'TA (D. C. 1. c.) plant quite glabrous ; stems 

 tufted, much branched, diffuse ; leaves 4 in a whorl, ovate-ob- 

 long or ovate-lanceolate; peduncles axillary, 1-flowered, bear- 

 ing 4 leaves at the apex; flower sessile, within the involucrum ; 

 fruit glabrous, smooth. Q.I H. Native of Mexico, where it 

 was collected by Haenke. Galium laevigatum, Bartl. mss. 



Smooth Madder. PI. diffuse. 



34 R. ? CORYMBOSA (D. C. prod. 4. p. 591.) stems creeping, 

 filiform ; branches alternate, erect, corymbosely dichotomous, 

 tetragonal ; leaves 4 in a whorl, sessile, approximate, oblong- 

 lanceolate, rather ciliated, glabrous; peduncles 1-flowered, bear- 

 ing each 4 bracteas : fruit glabrous. Native of Peru, on the 



