498 ORDEK CVIII. EUPHORBIACE^J. 



Genus III— TRA'GIA. Plu. 19—3. 

 (A German botanist, called Tragus.) 



Monoecious. Sterile florets ; perianth 3-parted. Stamens 3. 

 Fertile florets ; perianth 5-parted. Style 3-cleft. Capsule 3- 

 celled, 3-seeded. Seed solitary. 



1. T. linearifo'lia, (Ell.) Stem erect, pubescent, almost tomentose. 

 Leaves alternate, linear-pubescent, usually entire. Flowers in axillary 

 spikes. Capsule hirsute. — U . July — Aug. Southern Georgia. 12 — 

 18 inches. 



2. T. u'rens, (L.) Stem erect, branching, villous. Leaves alternate, 

 lanceolate, toothed toward the summit, hoary beneath. Flowers usu- 

 ally in small terminal spikes. Anthers united by pairs. Perianth of 

 the fertile floret 6-parted. — If. May — Aug. Dry soils. Common. 

 10 — 15 inches. 



3. T. urticifo'lia, (Mich.) Stem erect, hirsute, usually simple. Leaves 

 cordate-ovate, serrate, hirsute. Spikes opposite the leaves. Fertile 

 flowers at the base of each spike. Capsules hirsute. — If. May — Aug. 

 Dry soils. Common. 12 — 18 inches. 



Genus IV.— ACAL'YPHA L. 19—15. 

 (From a, privative, fcalos, pleasant, and aphe, touch.) 



Monoecious. Sterile florets ; perianth 3 — 4-parted. Sta- 

 mens 8 — 1G, united. Fertile florets; styles 3, 2 -parted. Cap- 

 sule 3-celled, 3-seeded. 



1. A. Virgin'ica, (L.) Stem erect, pubescent, striate, branching. 

 Leaves alternate, lanceolate, on short petioles, remotely and obtusely 

 serrate, dotted. Involucre axillary, pubescent, cordate, toothed. Ster- 

 ile florets in a spike ; perianth 4-leaved, hairy. Fertile florets within 

 the involucre ; perianth 3-leaved. — ®. June — Sept. In woods and 

 cultivated lands. Common. 12 — 18 inches. 



2. A. Carolixia'na, (Walt.) Stem erect, pubescent, striate. Leaves 

 rhombic-ovate, acuminate, serrate, entire at the base, on long petioles. 

 Involucre small, sessile, deeply notched. Spikes axillary, small, with 

 the fertile flowers at the base. — %. July — Aug. Cultivated lands. 

 10 — 20 inches. 



Genus V.— JA'TROPHA. L. 19—15. 

 (From the Greek iatros, physician, trophe, food, in allusion to its medicinal properties.) 



Monoecious. Sterile florets ; perianth funnel-shaped, petaloid. 

 Stamens 10, alternately short. Fertile florets ; perianth 5-leaved, 

 expanding. Styles 3, 2-cleft. Capsule 3-ceiled, 3-seeded. 



1. J. stimulo'sa, (Mich.) Stent herbaceous, hispid, stinging. Leaves 

 palmately lobed, lobes 3 — 5-toothed, slightly sinuate, ciliate. Flowers 

 with terminal cymes. Fertile florets setting in the divisions of the pe- 

 duncles. Sterile florets; perianth salver-form, pubescent, wilh a 5-cleft 

 Vorder, petaloid, white. Stamens 10. Fertile florets ; perianth 5-leaved. 

 ttyle 1 2-cleft. — Xf. Through the summer. Shady soils. 6 — 18 inches. 



