MALPIGHIACEAE. 51 



1. E. arborea (Chapm.) Small. Tree 3-8 m. tall or shrub: leaflets 3.5-10 cm. 

 long; blades deltoid to hastately 3-lobed: racemes few-flowered: calyx cylin- 

 dric: standard 35-40 mm. long; blade about 1 cm. wide: wing-petals 11-12 

 mm. long: pods drooping, 8-15 cm. long. — All year. 



The Coral-bean tree grows in hammocks on the Everglade Keys and the 

 Florida Keys. The yellowish heart-wood is close-grained, but neither very heavy 

 nor hard. (Endemic.) 



Order GERANIALES. 



Herbs, shrubs, or trees. Leaves alternate or opi^osite : blades simple 



or comiDouncI. Flowers perfect, monoecious, or dioecious, mostly regular. 



Calyx of distinct sepals. Corolla of distinct, or nearly distinct petals, or 



rarely wanting. Androecium of as many stamens as there are sepals or 



twice as many, or rarely more. Gynoecium of 2 or several united carpels. 



Ovai-y superior. Fruit various. 



Plants destitute of secreting glands or cells in the tissues. 



Flowers regular : sepals without dorsal glands. Fam. 1. Zygophyllaceae. 



Flowers irregular : sepals with dorsal glands. Fam. 2. Malpighiaceae. 



Plants with secreting glands, these often in the leaves, 

 or only in the bark. 

 Filaments distinct, nearly or quite to the base. 



Leaf-blades punctate by oil-glands. Fam. 3. Rltaceae. 



Leaf-blades not punctate. 



Gynoecium of distinct carpels. Fam. 4. Subianaceae. 



Gynoecium of more or less united carpels. 



Bitter-barked shrubs or trees with oil-sacs 



in the bark. Fam. 5. Simaeoubaceae. 



Resiniferous shrubs or trees. Fam. 6. Bdrseeaceae. 



Filaments united into a cup or tube, wholly or in part. Fam. 7. Meliaceae. 



Family 1. ZYGOPHYLLACEAE. Caltrop Family. 



Shrubs, trees, or perennial herbs. Leaves o^Dposite or alternate by the 

 suppression of one of each pair: blades compound. Flowers pei'feet. 

 Calyx of 4—6, mostly 5, sepals. Corolla of 4—6, mostly 5, petals or rarely 

 wanting. Androecium of twice as many stamens as there are sepals. 

 Gynoecium of 2-4-united carpels. Fruit capsular, sometimes baccate at 

 maturity, sometimes separating into nut-like carpels. 



1. GUAIACUM [Plum.] L. Shrubs or trees. Leaves relatively large, 



persistent, the leaflets but little longer than wide. Sepals 5 or rarely 4, 



unequal. Petals blue or purple. Filaments unappendaged. Fruit angled or 

 winged. 



1. G. sanctum L. Tree sometimes 10 m. tall or shrub, the bark pale: leaves 

 5-10 cm. long; leaflets 6-8, the blades broadly oblong to obovate, 2-3 cm. 

 long: sepals obovate to oblong-obovate, 6-7 mm. long: corolla about 2.5 cm. 

 wide; petals broadly obovate: fruit obovoid, 15-17 mm. long, orange. — Spr. 

 The Lignum-vitae grows in hammocks on the Florida Keys. Tlie dark-green 

 or yellowish-brown heart-wood is close-grained, very heavy, hard, and durable. 

 (IT. /.) 



Family 2. MALPIGHIACEAE. Malpighia Fa^iily. 



Shrubs or trees, or partially woody herbs or vines. Leaves opposite: 

 blades simi)le. Flowers usually perfect, sometimes cleistogamous. Calyx 

 of 5 often gland-bearing sepals. Corolla of 5 usually clawed petals, or 

 wanting. Androecium of 5-10 perfect or partly sterile stamens. Gynoe- 

 cium of 2—1, usually 3, distinct or united carpels. Fruit drupaceous, 

 capsular, or nut-like. 



