116 POLTGONACEAE. 



3. ANTIGONON Endl.; H. & A. Bot. Beech. Voy. 308. 1838. 



Vines Tvith alternate petioled cordate entire leaves, the petiole-bases 

 clasping, and small flowers in racemes opposite the leaves or clustered at the 

 summit, the racemes terminating in tendrils. Sepals 5, unequal, the 3 outer 

 ones cordate, ovate, the 2 inner ones oblong. Stamens 8, equal, the filaments 

 subulate, connate at the base. Ovary 3-angled; ovule erect; styles 3, recurved. 

 Achene enclosed in the accrescent calyx. [Greek, opposite the nodes.] Three 

 or four species native of Mexico and Guatemala, the following typical. 



1. Antigonon leptopus H. & A. Bot. Beech. Voy. 308. 1838. 



Herbaceous, climbing, branched, often 5 m. long or longer, finely pubescent 

 at least above. Leaves thin, broadly ovate, 3-9 em. long, puberulent, acuminate 

 at the apex, rather deeply cordate at the base, the petioles 1-5 cm. long; 

 racemes several or many, loosely several-flowered, the floriferous part 3-8 cm. 

 long, the tendril as long or shorter; pedicels slender, 10 mm. long or less; 

 flowering calyx pink or sometimes white, about 5 mm. long; fruiting calyx 

 1-1.5 cm. long, the sepals strongly veined. 



Roadways and waste ground, spontaneous after cultivation, New Providence 

 near Nassau : — Cuba to Martinique, and in Jamaica. Native of Mexico. Coeallina. 



4. COOCOLOBIS P. Br. Civ. & Nat. Hist. Jam. 209. 1756. 



Shrubs or trees, with alternate entire leaves, the ocreae cylindric or fun- 

 nelform, often very small, the small, usually green flowers racemose or spicate, 

 subtended by minute bracts and ocreolae. Calyx-tube accrescent, enclosing the 

 achene, its lobes 5. Stamens 8, the filaments slender. Ovary 3-angled; ovule 

 erect; styles 3. Fruit ovoid or globose, the accrescent calyx-tube becoming 

 fleshy and more or less adherent to the achene. Seed-coat thin; endosperm 

 mealy. [Greek, referring to the adherent calyx.] Over 125 species of tropical 

 and sulDtropical distribution, all American. Type species: Polygonum Vvi- 

 fera L. 



Flowering pedicels 1 mm. long or longer. 



Leaves very large, suborbicular, or broader than long, 7-20 cm. wide. 



1. C. Vvifera. 

 Leaves (except those of shoots) 6 cm. wide or less, ovate to 

 elliptic, obovate or orbicular. 

 Leaves not reticulate-veined above. 



Leaves coriaceous ; racemes erect or spreading ; fruit 



7-10 mm. long. 2. 0. laurifoUa. 



Leaves chartaceous ; racemes long, drooping ; fruit 



about 4 mm. long. 3. 0. lahamensis. 



Leaves prominently reticulate-veined on both sides when 



old. 4. 0. Northropiae. 



Flowering pedicels less than 1 mm. long. 



Inflorescence longer than the leaves, which are finely reticu- 

 late-veined above. 5. C. divcrsifoUa. 

 Inflorescence shorter than the leaves, which are very indis- 

 tinctly veined above. 6. C. Erugii. 



1. Coccolobis Uvifera (L.) Jacq. Enum. 19. 1760. 



Polygonum Uvifera L. Sp. PI. 365. 1753. 

 Coccoloiis leoganensis Jacq. Enum. 19. 1760. 



A tree, exceptionally up to 15 m. high with a trunk 1 m. in diameter, 

 usually not over 6 m. high, the branches spreading, the smooth bark brown the 

 twigs stout, finely pubescent when young, soon glabrous. Leaves orbicular or 

 broader than long, coriaceous, 7-20 cm. broad, cordate at the base, very short- 



