I7XBELLIFER.C. 103 



Gexus VI. DISCOPLEURA. 



Calyx with subulate teetli, poi-sistcnt. Petals ovate entire, 

 with a minute inlloxed point. Fruit ovate. Carpels 3-ribbcd. 

 Sicds soMiewliat terete. Annual,, glabrous plants, witli dis- 

 sected leaves. 



1 D. Catillacea. Slem geniculate, slighUy angled and furrowed, gla- 



Leuixs alternate, tcrimtt-ly dissected ; segnitnts capillary, spreading. 



!<< r<t in com|K>und umbels. Jnvolture many leaved, shorter than the rays 



ot vIjc umbel ; mv<>lucel many leaved, hnear, unequal. Fttuls ovate, acute. 



Anthers purple. i>etds tlai oii one side, furrowed on the other. 



White. May — June. 1-2 feet. 



2. D. CosTATA. Stem branching lowards the summit, slightly angled, gla- 

 brous. Lt'iitf very compound; fcaHets parted to the base, somewhat ver- 

 ticiilatc. I'mUls terminal, large ; 10-r2-leaved, dissected, involucel, manv 

 leaved, as long as the pedicels. Fttoh acuminate. Sccdi glabrous, ribbed. 



Wliite. 0. Ocu — Nov. Swamps on the Ogechee. 4-5 feet. 



3. D. Nlttaui. Stem erect, branching towards the summit. Umbels 

 large : involucre half the length of the rays. Leaves with somewhat verti- 

 ciilate segments. 



While. O- Florida. 



Gents VII. LEPTOCAULIS. 



Mariiin of the calvx obsolete. Petals oval, entire. Fruit 

 laterally compressed, ovate. Capsules slightly ribbed. Seed 

 flat on one side, convex on the other. Herbaceous plants, 

 with glabrous, terete, slender stems. Leaves dissected with 

 linear segments. Vmhcis opposite the leaves, and terminal, 

 involucre none. Involucel few leaved. 



1. L. DrvARiCATTs. Frui/ muricated," with short, somewhat appressed scales. 

 Leav'S ahtrnate divided with hnear segments, serrulate near the summit. 

 L'wi/^/wnth 5-6 unequal rays, middle one trequently sessile; involucel 3- 

 leaved. /VtoZ*ovaJ, nat. 



White. O- March — April. Sandy pastures. 1-2 feet. 



Gemts Vm. CICUTA. 



Margin of the calyx o-toothed, somewhat foliaceous. Petals 

 obcordate, with an inflexed point. Frvit laterally compress- 

 ed. Carpels ribbed. Seed terete. Aquatic, perennial, gla- 

 brous herbs, with fistulous stems. Involucre few leaved, or 

 none ; involuccls many leaved. 



1. C. Maculata. Stem lined with green and purple, slightly geniculatB. 

 Leav€s iri-ternate, or quinate ; leaflets ovate-lanceolate, with acuminate ser- 

 ratures, somewhat scabrous on the under surface ; petioles of the lower IcaveB 

 long, abeathing, with membranaceous wings; segments of the calyx ex- 

 ptiKliiig. Fetuls with long intlccted points. QM 



Water HcmTock, Spotted Cow bane, Beaver poison^ ^lushquasK. 

 White. %, July— Aug. Common. 



Gexts IX. SIUM. 



Bfargin of the calyx 5.toothed. Petals obovate, with an 



