536 RUBIACEjE. LXXXII. RACHICALLIS. LXXXIII. LUCYA. LXXXIV. POLYPREMUM. LXXXV. METABOLOS. 



nished with 2-3 linear accessory teeth between each. Anthers 

 exserted. Capsule globose, turbinate at the base. Seeds ovate, 

 angular, 8-9 in each cell. 



Shining Rachicallis. Shrub 2 to 3 feet. 



2 R. RUPE'STRIS (D. C. prod. 4. p. 434.) plant shrubby, 

 much branched ; branches twisted, corky ; leaves crowded in 

 stellate fascicles, oblong, fleshy, with revolute edges, shining 

 above ; stipulas connate, pubescent inside ; flowers axillary, 

 solitary, sessile ; corollas villous, with a curved tube. Jj . S. 

 Native of the Caribbee Islands, on rocks by the sea side ; as of 

 Cuba, Jamaica, &c. Hedyotis rupestris, Swartz, prod. p. 29. 

 H. B. et Kunth, nov. gen. amer. 3. p. 391. He<l. Americana, 

 Jacq. amer. p. 20. Oldenlandia rupestris, Lam. diet. 4. p. 535. 

 Sloane, jam. t. 202. f. 1. Habit of Passenna. Corolla yellow. 

 Calyx 4-cleft ; lobes woolly inside, with 4 accessory teeth be- 

 tween each. Seeds ovate, angular, about 20 in each cell. This 

 plant has been incautiously referred to the genus Buchnera by 

 Smith in Rees's cycl. vol. 17. 



Rock Rachicallis. Shrub 2 to 3 feet. 



3 R. CARACASA'NA (D. C. 1. c.) plant suffruticose, much 

 branched ; branches leafy at top ; leaves oblong, acute, fleshy, 

 with revolute margins, spreading, glabrous, and shining ; flowers 

 terminal and axillary, solitary, sessile. I? . S. Native of South 

 America, on the southern declivities of the mountains called 

 Silla de Caraccas. Hedyotis Caracasana, H. B. et Kunth, nov. 

 gen. amer. 3. p. 393. Corolla violaceous. 



Caraccas Rachicallis. Shrub 8 feet. 



Cult. Elegant shrubby plants of difficult culture. A mix- 

 ture of peat and sand will probably be the best soil for them, 

 and they should be grown in pots half filled with pot-sherds. 

 They may either be increased by seeds or by cuttings planted 

 in sand, with a bell-glass over them. They should be placed 

 on shelves in a green-house. 



LXXXIII. LITCYA (named by De Candolle after the late 

 Lucy Dunal, who made many observations upon the Rubiaceous 

 plants growing in the neighbourhood of Montpelier, as may be 

 seen by comparing the fl. fr. ed. 3. vol. 5. p. 499., sister to 

 Michel Felix Dunal, professor of botany at Montpelier). D. C. 

 prod. 4. p. 434. Dunalia, Spreng. but not of Kunth. Hedyo- 

 tis species, Swartz and A. Rich. Peplis species, Lin. 



LIN. SYST. Tetrandria, Monogynia. Calyx with a hemisphe- 

 rical tube, and the limb of 8 twin teeth or of 4 bifid ones, per- 

 manent. Corolla with a very short tube, and a 4-lobed limb ; 

 lobes obtuse. Stamens shorter than the corolla. Style short, 

 bifid. Capsule globose, didymous, 2-celled, with a loculicidal 

 and half septicidal dehiscence ; hence the capsule appears 8- 

 valved at the apex. Seed 2 in each cell, ex Spreng., 5-6, ex 

 Rich. A small herb, with the habit of Peplis. Roots fibrous 

 and tuberous. Stems short, glabrous. Leaves almost sessile, 

 cordate-ovate, downy beneath : upper ones usually by fours. 

 Flowers axillary, and nearly terminal, solitary on very short 

 pedicels, small, white. 



1 L. TUBERO'SA (D. C. prod. 4. p. 434.) O- F. Native of 

 the West India Islands, in shady dry places at the bottom of the 

 mountains, and on the roots of trees j as of Jamaica, St. Do- 

 mingo, &c. Ammannia hirta, P. Browne, jam. p. 145. Peplis 

 tetrandra, Lin. spec. 474. Jacq. amer. p. 100. t. 180. f. 29. 

 Oldenlandia tuberosa, Lam. diet. 4. p. 535. Hedyotis tubeiosa, 

 Swartz, obs. hot. p. 136. t. 1. f. 2. Dunalia tuberosa, Spreng. 

 pug. 1. p. 25. 



Tuberous-rooted Lucya. Herb small. 



Cull. This plant should be treated like other tender annuals. 

 It is not worth growing except in botanic gardens. 



LXXXIV. POLYPRE'MUM (from rro\v c , polys, much, and 

 Trpe/j.vov, premnon, a trunk ; but the application is not evident). 

 Lin. act. ups. 1741. p. 78. gen. no. 137. 'Gaertn. fruct. 1. t. 62. 

 Lam. ill. t. 71. Juss. ann. mus. 5. p. 255. mem. mus. 6. p. 382. 

 D. C. prod. 4. p. 434. 



LIN. SYST. Tetrandria, Monogynia. Calyx with a very short 

 tube, adnate to the bottom of the ovarium, and a 4-parted 

 limb ; lobes subulate. Corolla with a very short tube, 

 bearded throat, and a 4-parted limb ; lobes or segments 

 oval. Stamens 4, with very short filaments, and inclosed 

 anthers. Style 1, undivided. Capsule ovate, compressed, 

 2-celled, with a loculicidal dehiscence. Placentas oblong, 

 ascending, adnate to the bottom of the dissepiment. Seeds 

 numerous, very minute, angular, diaphanous. Embryo straight, 

 slender, in fleshy albumen. A glabrous herb, with the habit of 

 Galium or Buffbnia. Leaves opposite, linear-subulate, having 

 their bases connate from the almost entire stipular sheaths. 

 Corymbs terminal, dichotomous, cymose, with small sessile 

 flowers in the forks and tops of the branchlets, each flower prop- 

 ped by 2-4 bracteas. Corollas white. 



1 P. PROCU'MBENS (Lin. act. ups. 1741. p. 78.) y.. F. ex 

 Ell. sketch. 1. p. 200. 0. ex Pursh, fl. amer. sept. 1. p. 99. 

 Native of Carolina and Virginia, in barren places. P. Linnae'i, 

 Michx. fl. amer. bor. 1. p. 83. Linum Carolinianum, Petiv. 

 gaz. 9. t. 5. f. 6. 



Procumbent Polypremum. PI. procumbent. 



Cult. This plant should be treated as other tender annuals. 



Tribe IV. 



ISERTIE'-^E (this tribe contains plants agreeing with the 

 genus Isertia, in having a drupaceous fruit, containing many seeded 

 pyrenae or nuts). A. Rich. mem. soc. hist. nat. Par. 5. p. 108. 

 and 235. D. C. prod. 4. p. 435. Fruit drupaceous (f. 97. g.}, 

 composed of numerous many seeded pyrenae (f. 97. c.). Albu- 

 men of seeds fleshy. Shrubs or herbs. Leaves opposite. Sti- 

 pulas interpetiolar. 



LXXXV. META'BOLOS (from ^tra/SoXoc, metabolos, 

 changeable ; but the application is not evident). Blum, bijdr. p. 

 990. D. C. prod. 4. p. 435. Sclerococcus, Bartl. in herb. 

 Hsenke. 



LIN. SYST. Tetra-Peniandria, Monogynia. Calyx with an 

 obovate roundish tube, and a 4, rarely 5-parted limb. Corolla 

 funnel-shaped, with a 4, rarely 5-cleft or parted limb. Stamens 

 4-5, inserted in the throat of the corolla. Style filiform ; stigma 

 thickened, 2-4-parted. Berry dry, crowned by the calyx, divi- 

 sible into 2-4 many-seeded pyrenaa or nuts. Seeds angular, 

 fixed to prominent placentas. Suffruticose herbs. Stems tetra- 

 gonal. Leaves opposite, with parallel veins. Stipulas twin on 

 both sides, cut. Flowers disposed in whorles or axillary heads. 

 This genus is evidently very distinct from Hedyotis in the fruit 

 being indehiscent (ex Blum), and in the cells being usually 

 4 or 5. 



1 M. VP.NOSUS (Blum, bijdr. p. 991.) stem suffruticose, pros- 

 trate ; leaves on short petioles, ovate-lanceolate, acuminated, 

 lined with veins, rather scabrous ; whorles of flowers glomerate, 

 axillary. Jj . S. Native of Java, in the province of Buitenzorg, 

 in shady places. 



Veiny-\eaL\eA Metabolos. Shrub prostrate. 



2 M. LATIFO'LIUS (Blum. 1. c.) stem suffruticose, divaricate; 

 leaves on longish petioles, elliptic-lanceolate, acuminated at both 

 ends, rather scabrous ; flowers disposed in dense axillary glo 

 merate whorles. ij . S. Native of Java, on the mountains. 



Broad-leaved Metabolos. Shrub diffuse. 



3 M. RUGO'SUS (Blum. 1. c.) stem shrubby, decumbent; leave 



