PENTANDRIA— DIGYNIA. ^thusa. 63 



C. aquatica Gesneri. Bauh. Hist. v. 3. p. 2. 175./. 



Cicutaria. Riv. Pentap. hr. t.77 . 



Coriandrum Cicuta. Roth Germ. v. 1. 130. v. 2. p.\. 347. 



Sium n. 781. Hall. Hist. v. 1.3-46. 



S. alterum, olusatri facie. Ger.Em.2iJ6.f. Lob. Ic. 208. f. Rail 



Syn. 2\2. 

 S. aquaticum, foliis multifidis longis serratis. Moris, v. 3. 283. 



sect. 9. t.5.f.4. 

 S. erucse folio. Bank. Pin. 154. Dalech. Hist. 1094./. 



In ditches, and about the margins of rivers, not very common. 



Perennial. August. 



Root tv\herovis, hollow, with many whorled fibres, and several trans- 

 verse internal partitions. Stem 2 or 3 feet high, hollow, leafy, 

 branched, furrowed, smooth. Leaves on long footstalks, twice 

 ternate, bright green ; leaflets sharply and deeply serrated, ta- 

 pering at each end, from 1 to 2 inches long, more or less re- 

 markably decurrent ; those of the upper leaves very narrow. 

 Umbels large, many-rayed, stalked, partly terminal, partly op- 

 posite to the leaves J partial ones of very numerous slender rays. 

 General Bracteas very narrow, seldom more than 1 or 2, and for 

 the most part entirely wanting ; partial several, narrow, taper- 

 pointed, unequal. Anth. and stijles purplish. Fruit roundish, 

 with a sinus at the base, smooth'. Styles bowed, recurved, as 

 long as the fruit, their bases finally a little tumid, and confluent 

 with the receptacle. Seeds flattened at the sides ; convex at the 

 back, and marked with 3 prominent double ribsj which aftbrd an 

 excellent generic character hitherto unnoticed. The habit in- 

 deed, and the ternate leaves, which forbid our reducing this plant 

 to Sium, might well lead us to expect some essential mark of 

 difference in the fructification. I have not seen the fruit of C. 7na- 

 culata, nor of C. bulbifera. 



C. virosa is a very fatal plant to horned cattle, if they happen to 

 meet with it before it rises out of the water, in which state only 

 they will eat the young leaves. The whole herb is reported to 

 be poisonous also to other quadrupeds, as well as to mankind, 

 producing sudden inflammation in the stomach. See Engl. Bat. 

 Bulliard's t. 151 is certainly not our Cicuta, but may, possibly, 

 represent Angelica sylvestris. 



150. ^THUSA. Fool's-parsley. 



Linn. Gen. 141. Juss.220. Fl.Br.323. Lam.t.]96. Gcertn. 

 t.22. 



Fl. all perfect ; the marginal ones a little irregular. Cal. 

 superior, of 5 very minute, pointed, spreading leaves, 

 often scaixely discernible. Pet. 5, inversely heart-shaped, 

 deeply lobed, with an acute inflexed point; the outermost 



