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-lohed, 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 Shrub 2 -4 high. Leaves smooth, or tomentose beneath, toothed at 

 the summit. Capsule hairy. 



3. LIQUIDAMBAB, L. SWEET-GUM. 



Flowers monoecious, 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. Swamps, Florida to Mississippi, and 

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



ORDER 66. TJMBEL.L.IFERZE. (PARSLEY FAMILY.) 



Herbs, with chiefly hollow and furrowed stems, alternate 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 (mericarps), suspended from a filiform axis (carpophore), and cohering 

 by their inner face (commissure) ; each furnished with 5 primary ribs, and 

 often with as many secondary ones ; the intervening spaces (intervals') 

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

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

 men. Umbels and partial umbels (umbellets) 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. IIYDKOCOTYLE. Fruit orbicular, flattened. Leaves rounded. 



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



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