PENTANDRIA— DIGYNIA. Conium. 65 



times happens. The few long pendulous bracteas, under each 

 partial umbel, distinguish it from all its tribe. Dr. Bigelow of 

 Boston in New England observed this Mthusa to be without 

 scent in America ; but seeds transmitted by him produced plants 

 with the same nauseous garlick flavour as those of Great Britain. 

 Some curious facts of a similar nature have been observed. The 

 flowers of Hesperis matronalis, as I have heard, lose their scent 

 in America after the first generation. 



151. CONIUM. Hemlock. 



Linn. Gen. 1 32. Fl. Br. 302. Spreng. Prodr. 38. 



Cicuta. Jws5. 223. Tourn.tAQQ. La7n. t. \95. Gcertn.t. 22. 



Fl. all perfect, slightly irregular. Cal. obsolete. PeL 5, 

 inversely heart-shaped, with an acute inflexed point; the 

 outermost rather the largest. Filam. capillary, scarcely 

 so long as the corolla. Anth. roundish. Germ, ovate, 

 somewhat compressed, furrowed, wrinkled. Styles thread- 

 shaped, elongated, spreading, a little swelled at the base, 

 proceeding from the dilated, depressed, wavy, permanent 

 Jloral receptacle. Stigmas obtuse. Fruit ovate, slightly 

 compressed, with 10 prominent, acute ribs, wavy in an 

 unripe state, crowned with the dilated undulated Jl. re- 

 ceptacle, and the shortish, permanent, spreading styles. 

 Seeds half-ovate, tumid, each with 5 prominent acute ribs, 

 becoming finally straight and even ; the interstices flat. 



Herbaceous, fetid, with a branclied hollow stem. Leaves 

 repeatedly compound. Umbels numerous, terminal, of 

 many general, as well as partial, rays. General bracteas 

 several, short, ovate, unequal, reflexed ; partial 3, narrow, 

 short, unilateral, spreading. 



1. C. maculatum. Common Hemlock. 

 Stem polished and spotted, much branched. 



C. maculatum. Linn. Sp. PL 349. Willd. v. 1. 1395. Fl. Br. 302. 



Engl. Bot. V. 1 7. ^. 1 19 1 . Curt. Lond.fasc. \.t.\7. Woodv. Med. 



Bot. t. 22. Hook. Scot. 88. Jacq. Ausir. M56. Bull. Fr. t. 53. 



Bigel. Am. Med. Bot. t.\l. 

 Kojvsiov. Fuchs. Hist. 405. t. 406. Bauh. Pin. \60. 

 Cicuta. RaiiSyn.2\5. Ger. Em.lOdi.f. Lob. Ic.732.f. Riv. 



Pentap. Irr. t. 75. Matth. Valgr. v. 2. 443./. Camer. Epit. 839./. 



Dod. Pempt. 46 1, f. 

 C. n. 766. Hall. Hist. v. 1 . 337. 

 C. major. Bauh. Pin. ]60. Moris, v. 3. 290. 

 Coriandrum Cicuta. Crantz. Austr.fasc.3. 100. 

 C. maculatum. Roth Germ. v. 1. 130. i-. 2. p. 1. 348. 



VOL. II. F 



