122 BUETTNERIACEAE. 



bractlets. Sepals 5, partially or wholly united. Petals 5, showy. Carpels 

 united into a mostly indehiscent capsule. 



1. T. populnea (L.) Soland. Shrub or low tree: leaf-blades ovate. 5-12 cm. 

 long: calyx cup-like: petals 5-7 cm. long, yellow and purple: capsules de- 

 pressed, 3-4.5 em. broad. — Coastal hammocks. Xat. of the Old World Tropics. 

 — F. K. (Bah.. Cuba, Ant.) — Seaside-mahoe. 



Family 3. BUETTNERIACEAE. Chocolate Family. 



Shrubs or trees, or herbs, often resembling Malvaceae. Leaves alter- 

 nate : blades simple. Flowers mostlj' perfect. Calyx of 5, or rarely fewer, 

 sepals. Corolla of 5, or rarely few^er, petals, or wanting. Androeeium of 

 as many stamens as there are sepals, or more. Staminodia sometimes 

 present. Gynoecium of 5, more or less united carpels, or fewer. Fruit 

 capsular or follicular. 



Petals with flat blades: stigma brush-like. 1. Walthehia. 



Petals with hooded blades : stigmas capitate. 2. Atexia. 



1. WAIjTHEE,IA L. Herbs, shrubs, or trees. Leaf-blades toothed. 

 Involueel of 3 bractlets. Sepals 5, united below. Petals 5, loosely spreading. 

 Stamens 5: anthers with 2 sacs: staminodia wanting. Ovary 1-celled. Cap- 

 sule smooth, elongate. 



1. W. americana L. Plants 6-12 dm. tall, tomentose: leaf -blades ovate to 

 oblong, 1-5 cm. long: flowers in dense axillary clusters: sepals subulate: 

 petals yellow, slightly longer than the sepals: capsules 2.5-3 mm. long. — 

 Pinelands and hammocks. — F. K. (Ber., Bah., Cuba, Ant.) 



2, AYENIA L. Herbs, often partially woody. Leaf-blades toothed. 

 Involueel wanting. Sepals 5, slightly united. Petals 5, converging, the claws 

 involute. Stamens 5; anthers with three parallel sacs. Staminodia present. 

 Ovary 5-eelled. Capsule muricate, depressed. 



Petals G-6.5 mm. long; blades about 1.5 mm. wide; appendages stout, over 0.5 mm. 



long. 1- A- euplirasiaefoUa. 



Petals 4-4.5 mm. long : blades about 1 mm. wide ; appendages 



slender, less than 0.5 mm. long. 2. A. pusilla. 



1. A. euphrasiaefolia Griseb. Tap-root stout: stems prostrate: leaf -blades 

 predominately suborbicular to reniform, 0.5-1 cm. long, sharply few-toothed: 

 calyx about 3 mm. long: petals reddish: capsules 4-5 mm. in diameter: seeds 

 bluntly tuberculate. — Pinelands. — P. K, (Cuba.) 



2. A. pusilla L. Tap-root slender: stems erect or ascending: leaf-blades pre- 

 dominantly oblong to oblong-ovate, 1-2.5 cm. long, rather bluntly many- 

 toothed: calyx about 2 mm. long; lobes ciliate: seeds sharply tuberculate. — 

 Waste places. Perhaps introduced from the W. Indies. — F. K. (Bah., Cuba, 

 Ant.) 



Order HYPERICALES. 

 Herbs, shrubs, or trees. Leaves various. Flowers perfect, complete 

 and regular, or irregular in Violaceae, sometimes involucrate. Calyx of 

 distinct, or essentially distinct sepals. Corolla of distinct petals, i-arely 

 wanting. Androeeium of usually numerous stamens, but sometimes few 

 or 5. Gynoecium of several united carpels. Ovarj' superior, mostly with 

 parietal placentae. Fruit capsular, baccate, or drupaceous. 



