PENTANDRIA— DIGYNIA. Sison. 61 



often pinnatifid. Umbels numerous, terminal, solitary, erect 

 when in flower, each of about 4 unequal rays, the middle one 

 shortest; partial ones a.ho of few and unequal rays. General 

 Bracteas from 2 to 4, lanceolate, small and slender ; partial four, 

 still smaller. Fl. cream-coloured, all nearly exactly regular, 

 and fertile. Cat. scarcely discernible. Pet. inversely heart- 

 shaped, with an incurved point. Fruit roundish-ovate, broad, 

 short, moderately compressed. Seeds half-ovate, each with 3 

 dorsal, not very prominent, ribs, at a distance from the border. 

 Nojloral receptacle is, at any period, visible, but the large glo- 

 bose bases of the styles occupy all the summit of the germen and 

 fruit ; the styles themselves being very short, or hardly any, with 

 blunt, spreading, permaner>t stigmas. 

 The dry seeds are pungent and aromatic ; but in an early state 

 they have, like the whole herb, a peculiar nauseous scent when 

 bruisedj resembling that of Bugs. 



2. S. segetinn. Corn Honewort. 



Leaves pinnate; leaflets roundish-ovate, numerous. Umbels 

 drooping, irregularly aggregate. Bases of the styles di- 

 lated, depressed. 



S. segetum. Linn. Sp. PL 362. Willd. v. I. 1436. H.Br. 316. 



Engl. Bot. V.4. t. 228. Hook. Scot. 9 1 . Jacq. Hort. Find. v. 2. 



t. 134. 

 Sium n. 779. Hall. Hist. v. 1. 346. 

 S. arvense, sive segetum. Raii Syn. 21 L 

 S. terrestre, umbellis rarioribus. Moris, v. 3. 283. sect. 9. t.5.f. 6. 



bad. 

 Selinum Sii foliis. Goodyer in Ger. Em. 1018./. not good. 



In rather moist fields, on a calcareous soil. 



About Mapledurham, Hants. Goodyer. At Binham, Norfolk. Mr. 

 Crowe. Near Kelmarsh, Northamptonshire. Mr. Haubury. At 

 Walthamstow. Mr. Forster. Found by Dr. Walker, in the Scot- 

 tish island of Tirey (or Tiree) . Hooker. 



Annual, or often Biennial. August. 



Root tapering, smalt, very tough. Stems spreading in every di- 

 rection, 12 or 18 inches high, branched, round, striated, rushy, 

 somewhat leafy. Leaves chiefly radical, long, narrow, on long 

 footstalks ; leaflets 8 or 9 pair, besides the terminal one, which is 

 often 3-lobed, all sessile, ovate or heart-shaped, smooth, serrated, 

 cut, and partly lobed, of a pale or greyish green. General Um- 

 bels very imperfectly formed, with a few narrow, often very long, 

 general bracteas ; partial umbels irregularly assembled, drooping, 

 each of a few e.xtremely unequal rays, with 4 or 5 lanceolate, or 

 awl-shaped, partial bracteas. Fl. regular, flesh-coloured, or 

 white. Cat. of 5 minute, blunt, permanent leaves. Pet. ovate, 

 strongly involute, Styles extremely short, each with a broad. 



