40G 



KI THORBIACEiE. (spurge family.) 



Fields and around dwellings, Florida, and northward. July - Sept. — Stem 

 1° - 2° high. Leaves, with the petiole, 4' - 5' long. 



2. A. graciletlS, Gray. Annual, downy ; stem slender, erect or ascend- 

 ing; leaves short-petioled, lanceolate, ohscurely serrate or entire; staminate 

 spikes mostly many-flowered and longer than the ovate-serrate or toothed 

 bracts, with 1-3 pistillate flowers at the base ; capsule hairy. — Sterile soil, 

 Florida, and northward. July - Sept. — Stem 6'- 18' high. Leaves l'-lA' 

 long. 



3. A. COrchorifolia, Willd. Perennial ; stems several from a thick and 

 ■woody root, prostrate, pubescent, simple or sparingly branched ; leaves short- 

 petioled, ovate and oblong, obtuse, crenate, hairy ; pistillate flowers numerous, 

 crowded at the base of the slender staminate spike, each surrounded by a 

 round-ovate hairy toothed bract ; capsule bristly; seed ovoid, smooth. — South 

 Florida. — Stems 4' -6' long. Leaves rigid, 6" -8" long. Spikes mostly 

 terminal. 



* * Staminate and pistillate flowers on separate spikes. 



4. A. Caroliniana, Walt. Annual ; stem erect, much branched, pubes- 

 cent ; leaves thin, smooth, cordate-ovate, sharply serrate, long-petiolcd ; stami- 

 nate spike lateral, small, the minute white flowers pedicel led ; pistillate spike 

 terminal, stout, many-flowered ; bracts cut into several subulate lobes ; capsule 

 bristly; seeds silvery, pitted. — Cultivated ground, Florida to Mississippi, and 

 northward. July - Sept. — Stem 1 ° - 2° high. Leaves 2' - 3' long. 



6, TRAGIA, Plum. 



Flowers monoecious, apetalous, in slender racemes. Sterile flowers few or 

 numerous, caducous. Calyx 3 - 4-partcd. Stamens 2-4, with short and sepa- 

 rate filaments. Fertile flowers few or solitary at the base of the raceme. Calyx 

 5 - 8-partcd. Style 3-cleft : stigmas entire. Capsule bristly, of three globose 

 1 -celled, 1-seeded, 2-valved carpels. — Pubescent or bristly herbs, with watery 

 juice. Leaves alternate. Racemes opposite the leaves and terminal. Bracts 

 small, entire, persistent. Flowers minute, greenish. 



1. T. urens, L. Low, downy or hairy; stem at length much branched: 

 leaves nearly sessile, varying from broadly ovate or oblong-ovate, and serrate or 

 toothed throughout, or only at the apex, to linear and entire, obtuse, paler be- 

 neath; racemes shorter than the leaves and few-flowered, or elongated and 

 many-flowered. (T. linearifblia, Ell., the narrow-leaved form.) — Dry Bandy 

 soil, Florida, and northward. May -Aug. 1J.— Stem G'- 12' high Leaves 

 1'- 2' long. 



2. T. Ul'ticifolia, Michx. Bristly, with stinging hairs , stem erect, spar- 

 ingly branched ; leaves pet io led, deltoid-ovate or oblong, coarsely serrate, trun- 

 cate or cordate at the broad base, pale beneath . racemes shorter than the leaves, 

 the sterile (lowers somewhat crowded , capsule very bristly - Dry soil, Florida 

 to North Carolina, and westward. June- Sept. 1$,— Stems 1° - 2° high 

 Leaves l'-2' long. 



