466 



RUBIACEjE. I. NAUCLEA. 



teeth many, irregular, stiff. Corolla of the male flowers trifid, 

 of the hermaphrodite one quadrifid. Stamens 3-4. Styles in the 

 female flower 2. Fruit 3-horned. 



TRIBE XIII. 



OpERCULARiE'a:. Fruit 1-celled, l-seeded, joined together 

 laterally into a head (f. 112. &.), and at length opening by 2 

 valves at the apex. Herbs or subshrubs, with opposite leaves. 

 Stipulas twin on each side, distinct or concrete. 



219 POMAX. Limb of calyx wanting. Corolla 3-4-cleft. 

 Stamens 1-4. Style short ; stigmas 2, slender. Seeds wrinkled 

 from tubercles. Suffrutescent herbs. 



220 OPERCULA'RIA. Limb of calyx 3-4-lobed. Corolla 3-4 

 cleft. Stamens 1-5. Style short; stigmas 2, slender. Seeds 

 nearly smooth. Herbs suffruticose at the base (f. 112.). 



221 LIPO'STOMA. Limb of calyx 4-parted. Corolla with a 

 tubular base, a ventricose throat, and a 4-lobed limb ; tube hairy 

 inside, bearded at the top. Stamens 4, inserted in the throat. 

 Stigmas 2. Capsule globose, 2-celled, but usually only 1-celled 

 from the rupturing of the dissepiment, many seeded, crowned by 

 a deciduous operculum. 



t Rubiaceous genera not sufficiently known. 



222 PSILO'BIUM. Limb of calyx spreading, 5-parted. Corolla 

 with a short tube and a 5-parted limb. Stamens 5, fixed to the 

 base of the corolla. Stigma clavate, 10-winged, exserted. 

 Fruit cylindrical, silique-formed, crowned, 2-celled, many-seed- 

 ed. Seeds fixed to the central axis, 2 series in each cell. 

 Shrubs. 



223 PLATYME'RIUM. Limb of calyx rotate, 5-parted, rarely 

 4-parted. Corolla coriaceous, funnel-shaped, with a short tube, 

 which is woolly inside, and a 5, rarely 4-parted limb, which is 

 twisted in aestivation. Anthers sessile in the tube. Style cla- 

 vate, spirally 10-ribbed. Ovarium 2-celled, crowned by an 

 epigynous disk.- Shrub, very nearly allied to Psilobium. 



224 STIPULA'RIA. Calyx small, tubular, with a 5-toothed 

 border. Corolla tubular, slender. Stamens 5 ? Heads of 

 flowers axillary, nearly sessile, surrounded by a large calyciform 

 5-toothed villous involucrum. 



225 BENZO'NIA. Limb of calyx small, 5-toothed. Corolla 

 tubular, coriaceous, 5-cleft. Anthers triquetrous, sessile in the 

 throat. Stigma ovate-globose, furrowed longitudinally. Fruit 

 unknown. A shrub, with corymbose flowers. 



226 HIMATA'NTHUS. Calyx with a turbinate tube, and a 

 loose permanent 5-parted unequal limb. Corolla funnel-shaped, 

 having the tube much longer than the calyx, and a 5-cleft limb. 

 Stamens 5, capillary, very short, inserted in the tube. Style 

 clavate : stigma subulate. Ovarium 2-celled, 2-seeded. A 

 tree. Flowers spicate, sessile, involucrated by a large deciduous 

 bractea before expansion. Perhaps belonging to Rubiaceee. 



227 SICKI'NGIA. Calyx 5-toothed, permanent. Corolla cam- 

 panulate, 5-toothed. Filaments inserted in the middle of the 

 tube. Anthers exserted. Stigma 1. Capsule woody, 2-valved. 

 Seeds winged. A tree, with panicles of sweet-scented flowers. 

 Perhaps belonging to RubiacecE. 



Tribe I. 



CINCHONA'CEJi (this tribe contains plants agreeing with 

 Cinchona in important characters). D. C. prod. 4. p. 343. 

 Cinchoneae, Rich. diss. p. 108. Fruit capsular, 2-celled; cells 

 many-seeded. Seeds winged. Albumen fleshy. Trees or 

 shrubs. Leaves opposite. Stipulas interpetiolar. 



SUBTRIBE I. NAUCLE V E* (shrubs agreeing with the genus 

 Nauclea in the globose flowers). D. C. prod. 4. p. 343. Flowers 

 capitate, sessile upon a globose receptacle (f. 83. e. f. 84. It.) 



I. NAU'CLEA (from vavg, natts, a ship, and K\CIW, kleio, to 

 inclose ; in reference to the hull-shaped half capsule). Lin. 

 gen. no. 223. Gaertn. fruct. 1. p. 151. t. 30. Lam. ill. t. 153. 

 Roxb. fl. ind. 2. p. 117. D. C. prod. 4. p. 343. Nauclea 

 species, Juss. Kunth, Blume. Cephalanthus species. Lin. ed. 1. 

 Lam. Reich. 



LIN. SYST. Pentdndria, Monogynia. Calyx with an oblong 

 tube (f. 83. a.), and a short, truncate, or 5-toothed limb (f. 83. 

 6.) ; lobes linear. Corolla funnel-shaped (f. 83. c.), with a 

 slender tube, a naked throat, and 5 spreading, oval-oblong lobes 

 (f. 83. c.). Anthers inclosed (f. 83. g.\ or exserted, always 

 shorter than the lobes of the corolla. Style filiform (f. 83. e.}, 

 exserted ; stigma oblong (f. 83. d.), or ovate, tumid, undivided. 

 Capsules 2-celled (f. 83. h. f.), sessile upon the receptacle, not 

 gradually attenuated to the base. Seeds numerous, imbricate, 

 winged, fixed to oblong placentas, which are adnate to the dis- 

 sepiment. Embryo inverted in a fleshy albumen. Unarmed 

 trees, rarely shrubs, natives of India and Africa. Leaves oppo- 

 site, or 3-4 in a whorl, petiolate or sessile. Stipulas interpe- 

 tiolar, deciduous. Peduncles terminal and axillary, each bearing a 

 globose head of flowers. Bracteas wanting at the base of the head 

 of flowers, but with linear paleae among the flowers. Flowers 

 crowded, sessile. This genus differs from Cephalanthus in the 

 parts of the flowers being quinary, and in the cells of the cap- 

 sules being many-seeded ; and from Sarcocephalus in the fruit 

 being capsular, not baccate ; and from Uncaria in the capsules 

 being sessile, not attenuated at the base. 



I 



SECT. I. NAUCLEA'RIA (altered from Nauclea). Lobes of 

 calyx short, acute, or wanting. 



1 . Capsules growing together in the head. 



1 N. UNDULA'TA (Roxb. fl. ind. 2. p. 117.) arboreous; 

 branches brachiate ; leaves petiolate, ovate-oblong, obtuse, un- 

 dulated, shining ; Stipulas elliptic, obtuse, almost the length of 

 petioles ; peduncles terminal, solitary ; capsules united. Ij . S. 

 Native of the Moluccas. Peduncles drooping, each bearing a 

 large globular head of numerous, small, most beautiful yellow 

 fragrant flowers. Anthers seated in the 5 fissures of the corolla, 

 with hardly any filaments. 



Undulated-]~eaved Nauclea. Fl. May, June. Clt. 1820. Tree 

 20 feet. 



2 N. GLABE'RRIMA (Bartl. in herb. Haenke ex D. C. prod. 4. 

 p. 344.) branches tetragonal ; leaves ovate, glabrous, flat ; 

 Stipulas oval, length of petioles ; peduncles solitary, terminal ; 

 capsules united. fj . S. Native of the island of Luzon. This 

 species differs from N. undulata in the leaves not being undu- 

 lated or shining, in the petioles being 1 inch long, not 2 inches. 

 The heads are referrible to the fruit ofPlatanus, but are smooth. 



Quite- glabrous Nauclea. Tree 12 to 15 feet. 



3 N. WALLICHIA NA (R. Br. in Wall. cat. 6098.) branches 

 quadrangular ; leaves broad, roundish-elliptic, obtuse at both 

 ends, but sometimes cuneated at the base, glabrous : peduncles 

 terminal, solitary ; Stipulas elliptic, obtuse ; stamens exserted ; 



1 



