1. T. innócua, Walt. Erect, paniculate-branched, softly hairy-pubescent (6–12´ high); leaves varying from obovate-oblong to narrowly linear, acute at base, obtusely or sinuately few-toothed or lobed, sometimes entire, short-petioled or sessile, paler beneath; sterile calyx usually 4-parted; stamens 2. (T. urens, L.)—Dry sandy soil, E. Va. to Fla. and La. May–Aug.—Not stinging.
2. T. nepetæfòlia, Cav. Erect or reclining or slightly twining, hirsute with stinging hairs; leaves ovate-lanceolate or triangular-lanceolate, or the lower ovate, all somewhat cordate or truncate at base, coarsely cut-toothed, short-petioled; sterile calyx usually 3-parted and stamens 3. (T. urticæfolia, Michx.)—Virginia (Pursh), and common southward to Fla. and Tex., Mo., Kan., and westward.—T. stylàris, Muell., of the southwest, which is reported from Kan., may be distinguished by its 4–5-parted sterile calyx, 4–5 stamens, and elongated styles.
3. T. macrocárpa, Willd. Twining, somewhat hirsute; leaves deeply cordate, ovate, mostly narrowly acuminate, sharply serrate (3–5´ long), all but the uppermost long-petioled; pod ½´ broad. (T. cordàta, Michx.)—Ky. to Ga., Fla., and La.
11. STILLÍNGIA, Garden.
Flowers monœcious, aggregated in a terminal spike. Petals and glands of the disk none. Calyx 2–3-cleft or parted; the divisions imbricated in the bud. Stamens 2 or 3; anthers adnate, turned outward. Style thick; stigmas 3, diverging, simple. Capsule 3-celled, 3-lobed, 3-seeded. Seed carunculate.—Smooth upright plants with the alternate leaves mostly 2-glandular at base; the fertile flowers few at the base of the dense sterile spike (rarely separate); the bract for each cluster with a large gland on each side. (Named for Dr. B. Stillingfleet.)
1. S. sylvática, L. Herbaceous (1–3° high); leaves almost sessile, oblong-lanceolate, serrulate; glands of the spike saucer-shaped.—Sandy and dry soil, Va. to Fla., west to Kan. and Tex. June–Sept.
Order 99. URTICÀCEÆ. (Nettle Family.)
Plants with stipules, and monœcious or diœcious or rarely (in the Elm Family) perfect flowers, furnished with a regular calyx, free from the 1-celled (rarely 2-celled) ovary which forms a 1-seeded fruit; the embryo in the albumen when there is any, its radicle pointing upward; stamens as many as the lobes of the calyx and opposite them, or sometimes fewer. Cotyledons usually broad. Stipules often deciduous.—A large order (far the greater part tropical).
Tribe I. ULMEÆ. Flowers mostly polygamous, upon the last year's branches. Anthers erect in the bud, extrorse. Styles or stigmas 2. Fruit a winged samara or nut-like. Seed suspended. Embryo straight.—Trees, with alternate serrate pinnately veined leaves and fugacious stipules.
1. Ulmus. Flowers preceding the leaves. Ovary 1–2-ovuled. Fruit winged all around.