286 LXVn. UMBELLIFERiE. Cicuta 



er. Heads numerous, less than I'diam. Flowers pale blue ornearly white. 

 Jl. Aug. 



5. DISCOPLEURA. DC. 



Gv. 61CKOS, the disk ; TrXtvpa, a rib ; i. e. the disk and ribs (of the fruit) united. 



Calyx teeth subulate, persistent ; petals ovate, entire, ■with a mi- 

 nute, inflexed point ; fruit ovate, often didymous ; carpels 5-ribbed, 

 the 3 dorsal ribs filiform, subacute, prominent, the 2 lateral united, 

 with a thick accessory margin ; intervals with single vittae, seeds sub- 

 terete. — ® Lvs. much dissected. Umbels compound. J3racts of t/ie in- 

 volucre cleft. Fls. lohite. 



D. CAPiLLACEA. DC. (Ammi. Spren.g.') Bishxip-^t'ecd. 



Erect or procumbent; umbels 3 — 10-rayed j Ifts of the invol. 3 — 5, mostly 3- 

 cleft; //•. ovate. — In swamps near the coast, Ma.ss. f to Ga. Stem much 

 branched, 1 — 31' high. Leaves very smooth, temately dissected, with subulate, 

 spreading segments. Umbels axillary, pedunculate, spreading. Involucre leal- 

 lets about 3, with setaceous segments. Involucels fililbrm, longer than the um- 

 bellets. JL— Nov. 



6. BUPLEURUM. Tourn. 



(rr. /?(/tis, an ox, TrXtupov, a rib ; Irom the ribbed (veined) leaves of srane of the species. 



Calyx margin obsolete ; petals somewhat orbicular, entire, with a 

 broad, closely inflexed point ; fruit laterally compressed ; carpels 5- 

 ribbed, lateral ones marginal ; seed teretely convex ; flattish on the 

 face. — Herbaceous or shruhbij. Lvs. mostly simple. Invol. various. 

 FLs. yelloic. 



B. BOTUNDiFOLiuM. Modcshj. TliQTough-wax. 



Ltvs. roundish-ovate, entire, peribliate ; innol. 0; involucels of 5, ovate, 

 mucronate bracts ; f. with very slender ribs, intervals smooth, mostly without 

 vittae. — In cultivatcjd grounds and fields, N. Y. and Penn. and la. ! rare. Stem 

 If or more high, branching. Leaves 1 — 3' long, % as wide, rounded at base, 

 acute at apex, very smooth. Umbels 5 — 9-rayed. Involucels longer than the 

 umbellets. Fruit crowned with the wax-like shining base of the stj'les (stylo 

 podium). Jl. Aug. 



7. CICUTA. 



A Latin name used by Virgil (Ec. 2d and 5th) but of tinknown application. 



Calyx margin of 5, broad segments ; petals obcordate, the points 

 inflected ; fruit subglobose, didymous ; carpels with 5 flattish, equal 

 ribs, 2 of them marginal ; intervals filled with single vittte, com- 

 missure with 2 vittte ; carpophore 2-parted ; seeds terete. — "^l- Aquatic 

 foisonous herbs. Leaves compound. Stems hollow. Umbels perfect. 

 Invol. few-leaved or 0. Involucels many-leaved. F(s. ivhite. 



1. C. MACULATA. Water Hemlock. Spotted Cowbane. 



S^. streaked with purple; Imi-er lvs. triternate and quinate ; upper biter- 

 nate ; segments lanceolate, mucronately serrate; umbels terminal and axillary. 

 —Common in wet meadows, U. S. and Can. Stem 3 — Of high, smooth, striate, 

 jointed, hollow, glaitcous, branched above. Petioles dilated at bat^e into long, 

 abrupt, clasping stipules. Leaflets or segments 1 — 3' long, \ — f ' wide, finely 

 serrate, the veins mostly running to the notches, rarely to the points ! Umbels 

 rather numerous, naked, 2 — 4' broad. Involucels of 5 — 6 short, narrow, acute 

 bracts. Fruit IJ" diam., 10-ribbed, crowned with the permanent calyx and 

 styles. Jl. Aug. — The thick, fleshy root is a dangerous poison, but' sometimes 

 used in medicine. 



2. C. BULBirERA. Bulbfcrous Cicuta. Narrovs-leaved Hemlock. 



Axils of the branches bulbiferous ; li's. biternately divided ; Ifls, linear, with 

 remote, div(^rgent teeth; umbels terminal and axillary. — In wet meadows, Penn. 



