MALPIGHIACE^E. (MALPIGHIA FAMILY.) 81 



neath ; floivers umbellate-corymbed, appearing with the leaves ; calyx bell-shaped, 

 fringed on the margin, nearly as long as the stamens ; petals none. — Rich soil, 

 chiefly in the upper districts, and northward. April and May. — A large tree. 

 Leaves 3' - 5' wide. 



Var. Floridanum. Leaves truncate or slightly cordate at the base, with 

 3-5 obtuse and obscurely 3-toothcd lobes ; flowers umbellate, appearing before 

 the leaves ; calyx short, cup-shaped, hairy, one third as long as the stamens. — 

 Upland woods, Middle Florida. March and April. — A small tree. Leaves, 

 flowers, and fruit scarcely half as large as in the ordinary form. 



* * * Flowers on short and erect clustered pedicels, developed from lateral buds, and 

 appearing before the leaves : fruiting pedicels long and drooping. 



4. A. dasycarpum, Ehrh. (Silver Maple.) Leaves cordate, 3-5- 

 lobed, sharply toothed and serrate, white beneath ; petals none ; samara large, 

 woolly when young. — Banks of rivers, Florida to Mississippi, and northward. 

 February and March. — A tree 30° -50° high, with softwood. Flowers yel- 

 lowish. 



5. A. rubrum, L. (Red or Swamp Maple.) Leaves 3-5-lobed, or 

 undivided, smooth or pubescent, either cordate or rounded, or sometimes acute 

 at the base, toothed and serrate, white beneath ; petals oblong or linear ; samara 

 small, smooth. — Swamps, Florida to Mississippi, and northward. February and 

 March. — A small tree. Flowers and fruit red. 



2. NEGUNDO, Mcench. Ash-leaved Maple. 



Flowers dioecious. Calyx minute. Petals none. Stamens 4-5, hypogynous. 

 — A small tree, with smooth green bark. Leaves pinnately 3 - 5-foliolate, the leaf- 

 lets ovate or oblong, lobed or toothed. Flowers small, greenish ; the sterile ones 

 on long and drooping clustered pedicels, the fertile ones racemose, both from 

 lateral buds appearing with or before the leaves. 



1. N. aceroides, Mcench. (Acer Negundo, L.) River-banks, Florida 

 and northward. March and April. 



Order 44. MALPIGHIACE^. (Malpigiiia Family.) 



Trees or shrubs, with opposite simple dotless and mostly stipulate leaves, 

 and regular racemose or corymbose flowers on usually jointed pedicels. — 

 Calyx 5-parted. Petals 5, alternate with the calyx-lobes, unguiculate, 

 sometimes wanting. Stamens 10, alternate with the petals, and inserted 

 with them into a hypogynous disk : anthers roundish. Ovary solitary, 

 mostly 3-lobed, consisting of three more or less united carpels. Styles 3, 

 distinct or united. Fruit composed of one to three 1 -seeded cells or car- 

 pels. Seeds pendulous, without albumen. Cotyledons thick or leafy. 



