CL. T.] PENTANDBIA DIGYNIA. 147 



3. S. nodlflorum. Procumbent Water-parsnep. Leaves pinnate, 

 with egg-shaped and equally serrate leaflets ; umbels sessile, oppo- 

 site to the leaves ; stem procumbent. Flowers small, greenish- 

 white, with slightly inflected petals. Perennial : flowers in July 

 and August : grows in ditches and rivulets : not common. The 

 juice is recommended by Dr. Withering, in cutaneous diseases. 

 Eng. Bot. vol. ix. pi. 639. Eng. Fl. vol. ii. p. 57. Probably a va- 

 riety of the next. 433. 



4. S. repens. Creeping Water-parsnep. Leaves pinnate, with 

 roundish, deeply toothed leaflets ; umbels stalked, opposite to the 

 leaves ; stem creeping. Stems from six to ten inches long : 

 flowers white. Perennial : flowers in August : grows in boggy 

 places : rare. Eng. Bot.vol. xx. pi. 1431. Eng. Fl. vol. ii. p. 58. 



434. 



5. S. inunddtum. Least Water-parsnep. Leaves pinnate, with 

 wedge-shaped, cut leaflets ; the lower leaves divided into numerous 



thread-like segments. Stems procumbent or floating: umbels 



stalked, opposite the leaves : flowers white, all perfect. Perennial : 

 flowers in May: grows in ditches and pools: common. Eng. Bot. 

 vol. iv. pi. 227 : Sison inundatum. Eng. Fl. vol. ii. p. 58. 435. 



6. S. verticil^tm. Whorled Water-parsnep. Leaflets all hair- 

 like, in numerous whorled segments. Stem about a foot high, 



erect, round, striated : leaves chiefly from the root : umbels few, 

 terminal, with numerous white flowers. Perennial : flowers in July 

 and August : grows in salt marshes and wet pastures. Eng. Bot. 

 vol. vi, pi. 395. Eng. Fl. vol. ii. p. 59. 436. 



61. SI'SON. STONE-PARSLEY. 



Flowers all uniform, perfect and regular. Calyx obsolete or 

 bluntly toothed. Petals five, equal, elliptical or inversely heart- 

 shaped, involute at the point. Filaments thread-like, spreading, 

 about half as long as the corolla ; anthers roundish. Germeii 

 inferior, egg-shaped, striated. Style very short and thick, each 

 with a very large, tumid base ; stigmas obtuse, distant. Fruit 

 egg-shaped, compressed, crowned with the permanent, unaltered 

 styles. Seeds convex, each with three ribs. -Name from sizun, 

 a brook, in Celtic. 146. 



1. S. Amomum. Hedge Stonewort. Bastard Stone-parsley . Leaves 

 pinnate, the upper ones ternate ; umbels erect, of about four general 



rays ; bases of the styles globular. Stem about three feet high, 



erect, with numerous, slender branches : flowers cream- colour ed^ 

 all regular. Annual : flowers in August : grows in woods and 

 hedges ; in England, not rare. Eng. Bot. vol. xiv. pi 954 Ena 

 Fl. vol. ii. p. 60. 43^ 



2. S. segetum. Corn-parsley, or Stonewort. Leaves pinnate, with 

 numerous roundish leaflets ; umbels drooping, irregular ; bases of 



the styles dilated, depressed. Stems twelve or eighteen inches 



high, branched, round : flowers white or flesh-coloured, regular. 

 Annual: flowers in August: grows in moist fields in England not 

 common. Eng. Bot. vol. iv. pi. 228. Eng. Fl. vol. ii. p. 61. '438. 



62. CICU'TA. WATER HEMLOCK. 



Flowers uniform, perfect, and nearly regular. Calyx superior, 

 of five broad, acute, somewhat unequal leaves. Petals five, egg- 



