POLYGONACEAE. 15 



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 diameter, 

 yellow or orange. FLORIDA-TREMA. 



Hammocks, especially where burned or cleared, trop. pen. Fla. and the F. Keys. 

 (Endemic.) 



2. T. Lamarckiana (E. & 8.) 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. WEST-INDIAN TREMA. 



Hammocks, Lower F. Keys. (W. I.) 



3. MOMISIA F. G. Dietr. Spine-armed shrubs or trees, the bark rela- 

 tively smooth. Leaves deciduous: blades toothed, slightly inequilateral. Calyx 

 rotate, the lobes much longer than the tube. Stigmas 2, each 2-cleft. Drupe 

 oblong, ovoid, or globose. Spr. CHAPARRAL-SHRUB. 



Leaf-blades nearly smooth : drupe 8-12 mm. in diameter : stone with warty faces. 



1. M. Iguanaea. 

 Leaf -blades very scabrous : drupes 5-8 mm. in diameter : stone with 



reticulated faces. 2. M. pallida. 



1. M. Iguanaea (L.) Eose & Standley. Stem and branches spreading or climb- 

 ing, 1-3 m. long, the branches with recurved spines, glabrous : leaf -blades ovate, 

 oval or oblong-ovate, 4-12 cm. long, often coarsely toothed, nearly smooth: 

 drupes globose-ovoid. [M. aculeata (Sw.) Kl.] 



Hammocks, Terre Ceia Island. (Cont., W. I.) 



2. M. pallida (Torr.) Planch. Stem and branches spreading, 2-4 mm. long, 

 the branches puberulent, with straight spines: leaf -blades ovate to oblong, 

 2-3.5 cm. long, often coarsely toothed, rough: drupes subglobose. 



Hammocks, Lastero Bay. (Cunt.) 



Order POLYGONALES. 



Herbs, shrubs, trees, or vines. Leaves alternate, or sometimes oppo- 

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

 rarely obsolete. 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. Gynoecium of 2 or 3 united carpels, the ovary superior. 

 Fruit an achene. 



* 



FAMILY 1. POLYGONACEAE. BUCKWHEAT FAMILY. 



Plants various in habit. Leaves with manifest, usually sheathing 

 stipules, and inflorescence not involucrate in the following. 



1. COCCOLOBIS P. Br. Evergreen shrubs or trees. Leaves alternate, 

 the ocreae cylindric or funnelform. Flowers borne in spikes or racemes. 

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

 entire. Aehene 3-angled, included. 



