APOCYNEJi. XL. CERBERA. XLI. TANGHINIA. 



97 



15 A. ODORA'TA (Wall. cat. no. 1606.) peduncles axillary, 

 S-flowered ; leaves opposite, or 3 in a whorl, obovate-elliptic, 

 tapering much to the base. *j . S. Native of Chapedong. 



Street-scented Alyxia. Shrub. 



16 A. GLAUCE'SCENS (Wall. cat. no. 1607.) leaves opposite, 

 oblong, coriaceous, shining above, glaucous beneath ; corymbs 

 axillary, many-flowered; throat of corolla crowned. Tj . S. 

 Native of the Straits of Malacca. 



Glaucescent Alyxia. Shrub. 



Cult. For culture and propagation see Taberneemonlana, p. 92. 



XL. CE'RBERA (so named from Cerberus, on account of its 

 poisonous qualities). Lin. gen. no. 294. Juss. 149. H. B. et 

 Kunth, nov. gen. amer. 3. p. 223. Blum, bijdr. p. 1031. 

 Ahouai, Tourn. inst. 434. Jacq. amer. 48. Thevetia, Juss. 

 in ann. mus. 15. p. 346. 



LIN. SYST. Penlandria, Monogynia. Calyx 5-parted ; seg- 

 ments permanent. Corolla funnel-shaped ; tube pilose inside 

 at top ; throat 5-toothed : teeth opposite the anthers ; limb 5- 

 cleft ; segments oblique, or unequal-sided. Anthers seated on the 

 top of the tube, almost sessile, inclosed, ovate, adhering to the 

 stigma. Ovarium didymous, girded by 5 hypogynous scales or 

 glands. Style filiform, didymous ; stigma discoid : having the 

 margin crenulated below, but convex and emarginate above. 

 Drupes twin, one of them usually abortive, containing a fibry 

 semi-bivalved, 1 -celled putamen ; cells divided into two divi- 

 sions by the moveable dissepiment. Seeds usually solitary. 

 Lactescent trees or shrubs. Leaves scattered, quite entire. 

 Peduncles extra-axillary at the tops of the branches. Flowers 

 showy yellow or white. 



1 C. THEVE'TIA (Jacq. amer, 48. t. 34. ed. pict. t. 47.) leaves 

 linear, with sub-revolute edges, almost veinless, glabrous ; pe- 

 duncles generally 1 - flowered ; calycine segments ovate, lanceo- 

 late, acute, 3 times shorter than the tube of the corolla. lj . S. 

 Native of New Granada, in hot places; Mexico, Cuba, Marti- 

 nico, &c. Lin. spec. 303. Lam. ill. t. 170. f. 2. Hook. bot. 

 mag. 2309 Plum. icon. t. 18. Pluk. aim. p. 253. t. 207. f. 3. 

 Hern. mex. 443. f. 3. Axils of leaves furnished with some 

 subulate scales. Corollas yellow. Drupe half orbicular, trun- 

 cate at top, 2-celled, size of a bean; cells bipartite. 



Thetet's Cerbera. Fl. June, July. Clt. 1735. Tree 12 ft. 



2 C. THEVETIOIDES (H. B. et Kunth, nov. gen. amer. 3. p. 

 223.) leaves lanceolate-linear, acute, veiny, glabrous, with re- 

 volute edges: nerves and veins pilose beneath; flowers crowded 

 at the tops of the branches, on short peduncles, sometimes 2 

 on a single peduncle ; calycine segments oblong-lanceolate, 

 acutish, 3 times shorter than the tube of the corolla. >j . S. 

 Native of New Spain, in temperate places, near the town of 

 Tasco. Leaves 4^ inches long. Segments of corolla dimidiately 

 obovate. Drupe globose, size of an apple. Corollas yellow. 



Thetetia-iike Cerbera. Fl. April, July. Clt. 1800. Tree 12 ft. 



3 C. PERUMA'NA (Pers. ench. 1. p. 267.) leaves linear-lan- 

 ceolate, crowded, glabrous ; peduncles short, few-flowered. 



^ . S. Native of Peru, in woods. C. Thevetia, Ruiz et Pav. 

 fl. per. 2. p. 27. t. 153. f. b. C. Thevetia /3, Poir. suppl. 1. 

 p. 261.? According to Cav. descr. p. 108. this differs from 

 Thei-etia in the ovarium being tetragonal, not round, in the 

 peduncles being few-flowered, not 1 -flowered. Corollas yellow, 

 with wedge-shaped, oblique, truncate segments, and a villous 

 throat : having 5 subulate teeth, closing the tube. 

 Peruvian Cerbera. Tree 12 feet. 



4 C. AHOU'AI (Lin. spec. 1 . p. 303.) leaves ovate, acute, 

 glabrous; peduncles terminal, short, 6-7-flowered ; calycine seg- 

 ments reflexed ; segments of corolla undulated. j . S. Na- 

 tive of Brazil. Curt. bot. mag. 737. Andr. rep. 231. Lam. 

 ill. 2. p. 193. t. 170. f. 1. C. Thevetia, Lin. hort. cliff, p. 75. 



VOL. IV. 



Ahouai, Thev. antarct. p. 66. Corollas pale yellow. The 

 wood is very fetid ; and the fruit is a deadly poison. The 

 Indians are said to put small stones into the empty nuts, string 

 them, and fasten them about their legs when they dance. 



Ahouai Cerbera. F). June, July. Clt. 1739. Tree 10 to 

 20 feeU 



5 C. OVA'TA (Cav. icon. 3. p. 35. t. 270.) leaves oblong- 

 ovate, green above, rather downy beneath, and yellowish ; flowers 

 terminal, usually 5 together ; calycine segments ovate, acute, 

 reflexed ; segments of corolla arched. ^ . S. Native of New 

 Spain. Corolla yellow. Fruit nearly globose, size of a walnut, 

 compressed, bluntly truncate. 



Orate-leaved Cerbera. Shrub 3 to 6 feet, 



6 C. CCNEIFOLIA (H. B. et Kunth, nov. gen. amer. 3. p. 224.) 

 leaves oblong-cuneated, rounded at the apex, puberulous above 

 and downy beneath ; peduncles sub-dichotomous, few-flowered ; 

 calycine segments oblong, acute, hardly shorter than the tube of 

 the corolla ; segments of corolla dimidiately obovate. Tj . G. 

 Native of Mexico, on the western declivities of the mountains, 

 between Zumpango and Mescalo. Leaves 3 inches long, and 

 an inch broad at top, with some scales in their axils. Peduncles 

 hairy. Corollas yellow ? 



Wedge-kaved Cerbera. Fl. April. Tree. 



7 C. NITIDA (H. B. et Kunth, nov. gen. amer. 3. p. 225.) 

 leaves oblong-lanceolate, acuminated, with subrevolute edges, 

 glabrous and shining above, but hairy beneath ; flowers race- 

 mose ; calycine segments ovate, acuminated, 4 times shorter 

 than the tube of the corolla ; segments of corolla rounded. 

 Tj . S. Native of New Granada, at the mouth of the river 

 Sinu, and near Turbaco. Leaves 8-10 inches long. Corollas 

 white, about the size of those of Vinca rosea ; limb downy 

 outside. Ovaria girded by 5 combined glands. Drupes com- 

 bined, fleshy, 2-lobed, 4-celled ? cells 1 -seeded. 



Shining Cerbera. Fl. March. Shrub. 



f- Doubtful species. 



8 C. ALLIODORA (Willd. mss. ex Roam, et Schultes, syst. 4. 

 p. 798.) leaves roundish, obtuse, roughish. fj . S. Native of 

 South America. Humb. et Bonpl. 



Garlic-scented Cerbera. Shrub or tree. 



9 C. OBOVA'TA (Willd. 1. c.) leaves elliptic-obovate, tapering 

 into the petioles, glabrous, parallel)}- veined beneath. Fj . S. 

 Native of? 



Oiorate-leaved Cerbera. Shrub or tree. 



Cult. For culture and propagation see Tabernaemontana, p. 92. 



XLI. TANGHI'NIA (Tanghen or Tanghin is the Mada- 

 gascar name of T. tenen^flva, the juice of which is the ordeal 

 water of that island). Pet. Th. gen. med. p. 10. Poir. suppl. 5. 

 p. 283. Bojer. in Hook. bot. misc. 3. p. 290. t. 110. Cerbera 

 species of authors. Cynoctonum, Gmel. syst. veg. 1. p. 443. 



LIN. SYST. Pentdndria, Monogynia. Calyx 5-cleft ; seg- 

 ments spreading, deciduous. Corolla salver-shaped, longer 

 than the calyx ; with a pentagonal, dilated throat ; limb spread- 

 ing; segments unequal-sided. Stamens 5, inserted into the 

 dilated part of the tube of the corolla ; anthers thick, heart- 

 shaped, hidden by as many foliaceous acuminated inflexed la- 

 mellae or scales, which rise from the throat : having an umbilical 

 tubercle under each anther. Ovarium solitary, 4-lobed, girded 

 by a hypogynous ring. Stigma capitate, 2-lobed, inclosed in the 

 dome formed by the anthers. Drupe ovate, containing a fibry 

 nut, which is acute at both ends. Integument of seed mem- 

 branous. Albumen none, ex Pet. Th. ; concatenated, horny, ex 

 Bojer. Cotyledons flat, slender, somewhat cordate, ex Bojer ; 

 thick, concave, ex Pet. Th. Embryo superior, inverted. Gla- 

 brous trees, with the habit of Mango. Leaves alternate, approxi- 

 O 



