303 DICOTYLEDONOUS. 



obovate, scattered sessile, cuneate, finely serrate, the floral ones obovate, or 

 broad-lanceolate. Vmbd 5-cleft, with the small branches dichotomous. 

 Fruit sm-oih- 



© May. Damp clay soils. 12-18 in. 



11 E CoROLLATA. Stem, erect, slightly hairy, usually simple. Leaves al- 

 ternate, oval, petiolate, varying in form. Flowers in terminal umbels, con- 

 spicuous, the inner segments of the involucre petaloid, obovate. 



% Through the Summer. Dry fields. 1-2 ft. 

 Var. Angustifolia. Leaves 3-4 inches long, linear-lanceolate, sessile, 

 hairy beneath, the upper branches ot the umbel dichotomous. 

 % May — Sept. Dry soils, very common. 1-2 ft. 



12 E Pamiculata. Stem slightly angled, hairy. Leaves large for the gen- 

 us, entire, with revolute margins, hairy along the midrib beneath. Flowers 

 terminal, somewhat paniculate- Fruit smooth. 



% August— Sept. Middle Car. & Ga. 1-2 ft. 



Order CXXXV. URTICACE.E. 



Flowers moncecious, or dioecious, scattered or clustered. — 

 Perianth membranous, lobed, persistent. Stamens definite, 

 4-5, inserted into the base of the perianth and opposite its 

 lobes. Ovary superior, simple. Ovule solitary, erect. Stig- 

 ma simple. Fruit an indehiscent nut, surrounded by the pe- 

 rianth. Usually herbaceous plants, with alternate leaves, 

 often covered with stings. 



GiLNus I URTICA. 



Flowers usually moncecious- Sterile jiorets ; perianth of 

 4 leaves. Stamens 4. Fertile Jiorets ; perianth 2-leaved. — 

 Stigma 1. Seed 1, shining. 



1 U PtJMiLA. Stem usually erect, succulent Leaves opposite, decussate, 

 ovate, acuminate, serrate, 3-nerved, lower ones on rather long petioles. — 

 Flowers monoecious, in clustered corymbs. Stamens usually 3. 



<D July. Wet grounds. 6-12 in. 



2 U Urens. Stem erect, quadrangular, hairy, hispid. Leaves opposite, 

 eliptic, 3-nerved, or partly 5-nerved, coarsely toothed, with white stints. — 

 >Sj3i7cesglomerate, by pairs. Flotcers clustered. Stinging Nettle. 



<v) June — July. Culdvated grounds. 



3 U CHAMCEDr.oiDEs. Stem erect, glabrous. Leaves opposite, ovate, hairy 

 beneath, with white stings on the upper surface. Flowers in axillary clus- 

 ters, the upper ones fertile, the lower sterile. Perianth hairy. 



# Feb. — March. Southern Ga. 4-6 in. 



4 U DioicA. Stem erect, branching, hispid. Leaves cordate, ovate-lan- 

 ceolate, coarsely serrate. Flowers dicecious, in clustered, paniculate spikes ; 

 spikes 2 from each axil, covered with sting.'. Large stinging nettle. 



% June — Aug. Waste places. 2-3 ft. 



5 U Procera. 'Sfenx erect, pubescent, quadrang liar. Zeares ovate-lan- 

 ceolate, serrate, on fringed petioles. Floioers dicecious, in compact, cluster- 

 ed sDikes. 



% inly— Aug. Wet soils. 3-4 ft. 



6 U Capitata. Stem erect, furrowed, quadrangular. Leaves alternate, 

 cordate-ovate, acuminate, serrate, 3-nerved. Flowers in sessile clusters. — 

 Spikes solitary, lateral and axillary. 



% June— July. Damp soils. 4-5 ft. 



