UMBELLIFER^. (PARSLEY FAMILY.) 157 



1. H. Virginica, L. — Low woods, Florida to Mississippi, and northward. 

 November. — A large shrub. Leaves obovate or oval, oblique, crenate-toothed, 

 pubescent ; flowers appearing when the leaves are falling. 



2. POTHERGILLA, L. 



Calyx truncate, obscurely 5 - 7-toothed. Petals none. Stamens numerous, 

 slender, perfect. Styles 2. Capsule 2-lobed, 2-celled, 2-valved at the apex, 

 with a single bony seed in each cell. — A shrub, with oval or obovate leaves, 

 and white odorous flowers in terminal bracted spikes, appearing before the 

 leaves. 



1 P. alnifolia, L — Swamps, Florida to North Carolina. March and 

 April — Shnib 2° - 4° high. Leaves smooth, or tomentose beneath, toothed at 

 the summit. Capsule hairy. 



3. LIQUIDAMBAR, L. Sweet-Gum. 



Flowers moncecious, in globular 4-bracted spiked heads. Calyx and corolla 

 none. Stamens very numerous. Styles 2. Ovary 2-celled, with numerous 

 ovules in each cell. Capsules united in a close head, woody, 2-beaked, opening 

 between the beaks, 1 -2-seeded. Seeds wing-angled. — Trees. Heads of sterile 

 flowers sessile, crowded ; those of the fertile flowers on long nodding peduncles. 



1. L. Styraciflua, L. Branches with corky wings ; leaves roundish, with 

 5-7 acuminate serrate spreading lobes. — Swam])s, Florida to Mississippi, and 

 northward. March. — A large tree. The exposed juice hardens into a fragrant 

 gum. 



Order 66. UMBELLIFER^. (Parsley Family.) 



Herbs, with cliiefly hollow an<l furrowed stems, aitornate mostly com- 

 pound leaves, with dilated or clasping petioles, and umbelled flowers. — 

 Calyx-tube coherent with the ovary ; the limb 5-lobed or obsolete. Petals 

 5, mostly incurved, inserted with the 5 stamens on the edge of the disk 

 that crowns the ovary. Styles 2. Fruit composed of 2 indehiscent car- 

 pels (piericarps), suspended from a filiform axis {carpophore), and cohering 

 by their inner face {annmlssure) ; each furnished with 5 primary ribs, and 

 often with as many secondary ones ; the intervening spaces {bitervah) 

 usually containing channels (vitt(e), which are filled with aromatic , oil. 

 Seed solitary, suspended. Embryo minute, at the base of horny albu- 

 men. — Umbels and partial umbels (ronbellets) commonly subtended by an 

 involucre or involucel. 



Synopsis. 



§ 1. Inner face of the seed flat, or nearly so. 

 * Umbels simple, or one growing from the summit of another. Stems creeping. 



1. IIYDROCOTYLE. Fruit orbicular, flattened. Leaves rounded. 



2. CRANTZIA. Fruit globular. Leaves linear, fleshy. 



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