498 ORDER cvin. — euphorbiace.e. 



Genus III— TRA'GIA. Plu. 19—3. 

 (A Qermaa botanist, called Tragus.) 



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

 Fertile florets ; perianth 5-parted. Sti/le 3-cleft. Capsule 3- 

 celled, S-seeded. Seed solitary. 



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

 Leaves alternate, linear-pubeacent, 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. — 2(. May — Aug. Dry soils. Common. 

 10 — 15 inches. 



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

 C(»i-date-ovate, serrate, hirsute. Spikes opposite the leaves. Fertile 

 flowers at the base of each spike. Capsules hirsute. — 21. May — Aug. 

 Dry soils. Common. 12 — 18 inches. 



Genus IV.— ACAL'YPHA. L. 19—15. 

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



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

 mens S — 16, 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, /nvo/wfre axillary, pubescent, cordate, toothed Ster- 

 ile floret.s 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. Carolinia'na, (Walt.) Stem erect, pubescent, striate. Leaves 

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

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

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

 10 — 20 mches. 



Genus V.— JA'TROPHA. L. 19—15. 



(From tho Greek iatros, physician, trophe, food, in allusion to its medicinal proi)erties.) 



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

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

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



1. J. stimulo'sa, (Mich.) Stem herbaceous, hispid, stinging. Lco.ves 

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

 with rerminid cynii-.o. Fertile florets setting in the divisions of the pe- 

 donck'S, Stirile fiu'-ets ; perianth salver-form, pubescent, wi'h a 5-cleft 

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

 %y/e 1 2-cleft. — If. Through the summer. Shady soils, 6 — 18 inches. 



