POLYGONACEAE. 41 



1. TREMA Lour. Unarmed shrubs or trees, the bark smoothish. Leaves 

 persistent: blades toothed, slightly inequilateral. Calyx rotate, the lobes 

 much longer than the tube. Stigmas 2, entire. Drupe ovoid or globose. 



Leaf-blades cordate at the base : anthers over 1 mm. long : drupes yellow or orange. 



1. T. floridana. 

 Leaf-blades obtuse or rounded at the base : anthers less than 



1 mm. long : drupes pink. 2. T. Lamarckiana. 



1. T. floridana Britton. Shrub, or tree 6 m. tall, with copiously pubescent 

 foliage: leaf -blades ovate, oblong-ovate, or lanceolate, 4-10 cm. long, softly 

 pubescent beneath: calyx greenish: drupes subglobose, 2.5-3.5 mm. in diam- 

 eter, yellow or orange. Hammocks, U. keys. [E. K.] 



2. T. Lamarckiana (E. & S.) Blume. Small tree or shrub, with finely hirsute 

 or velvety twigs: leaf -blades oblong, lanceolate, or narrowly ovate, mostly 1-3 

 cm. long, finely serrate, scabrous above, veiny-reticulate beneath, obtuse or 

 rounded at the base: calyx whitish or pinkish: drupes ovoid or globose-ovoid, 

 2-2.5 mm. in diameter, pink. Hammocks, L. keys. (Ber., Bah., Cuba, Ant.*) 



Order POLYGONALES. 



Shrubs, herbs, trees, or vines. Leaves alternate, or sometimes oppo- 

 site or whorled : blades mostly entire : stipules present, usually as a sheath. 

 Flowers perfect, monoecious, dioecious, or polygamous, variously disposed. 

 Hypanthium long or short. Calyx of 2-6 sepals, which sometimes develop 

 keels or wings. Corolla wanting. Androecium of 2-9 stamens. Gynoe- 

 cium of 2 or 3 united carpels, the ovary superior. Ovule orthotropous.. 

 Fruit an achene. 



FAMILY 1. POLYGONACEAE. BUCKWHEAT FAMILY. 

 Plants various in habit. Leaves with manifest, usually sheathing, 

 stipules (ocreae) and inflorescence not involucrate, or the stipules obsolete 

 and the inflorescence involucrate. 



1. COCCOLOBIS P. Br. Shrubs or trees, or rarely vines. Leaves alter- 

 nate, the ocreae cylindric or funnelform. Spikes or racemes elongate. Sepals 

 5, surmounting the accrescent hypanthium. Stamens 8. Stigmas 3, entire. 

 Achene 3-angled, included in the hypanthium. 



Leaf -blades longer than wide, narrowed at the base : fruits about 1 cm. thick. 



1. 0. laurifoUa. 

 Leaf -blades wider than long, cordate at the base : fruits 1.5-2 cm. 



thick. 2. C.uvifera. 



1. C. laurifolia Jacq. Tree: leaf -blades oblong to ovate or obovate, 5-10 cm. 

 long, narrowed or rounded at the base: panicles less than 1 dm. long during 

 anthesis, the lower flower-clusters usually with 3 or 4 pedicels: sepals 2.5-3.5 

 mm. long: fruits globose-ovoid. Hammocks, U. keys, L. keys. [E. K.] 

 (Bah., Cuba, Ant.) PIGEOX-PLUM. 



2. C. uvifera (L.) Jacq. Shrub or small tree: leaf -blades suborbicular, 4-20 

 cm. wide, cordate at the base: panicles over 1 dm. long in anthesis, dense: 

 sepals 2-3 mm. long: fruit subglobose, borne in grape-like clusters. Coastal 

 sand-dunes and hammocks, U. S. keys, U. keys, L. keys, L. S. keys. [E. K.] 

 (Ber., Bah., Cuba, A nt.) SEA-GRAPE. 



