CL. II.] DIANDRIA MONOGYNIA. 55 



shaped, as long as the calyx. Capsule large, globose, one-celled. 

 Seeds numerous, small. Name from utriculus,a little bladder. 10. 



1. U.viilgdris. Greater Hooded Water Milfoil, or Bladderwort. Spur 

 conical ; upper lip of the corolla as long as the palate : leaves divided 



into numerous segments. Stems much branched, lying prostrate in 



the water : leaves small, with very slender divisions, having minute 

 prickles at the margin. Scape erect, round, bearing from three to eight 

 bright yellow flowers, arranged in a bunch : lower lip much larger than 

 the upper, with a projecting palate closing the mouth : spur curved, 

 acute : the roots, stems, and leaves are covered with numerous vesicles, 

 having an aperture closed by a valve, and its margin armed with bristles. 

 In the earlier stages these vesicles are filled with water, and when it be- 

 comes necessary for the plant to rise and expand its flowers in the air, 

 they become filled with air : after some time the air in the vesicles is 

 substituted by water, and the plant descends to ripen its seeds. Peren- 

 nial : flowers in July : grows in ditches and pools : frequent. Eng. Bot. 

 vol. iv. pi. 253. Eng. Ft. vol. i. p. 30. 39. 



2. U. intermedia. Middle Hooded Water Milfoil, or Bladderwort. 

 Spur conical ; upper lip of the corolla double the length of the palate ; 



leaves divided into three linear forked segments. Smaller than the 



former: leaves repeatedly forked : flowers smaller and paler: bladders 

 on branched stalks, not on the leaves. Perennial : flowers in July : 

 grows in ditches and pools : not common. About Bantry and Dublin, in 

 Ireland ; lake near Forfar, and various parts of Aberdeenshire and Mo- 

 rayshire. Eug. Bot. vol. xxxv. pi. 2489. Eng. Fl. vol. i. p. 30. 40. 



3. U. minor. Lesser Hooded Water Milfoil, or Bladderwort. Spur 

 very short, obtuse, keeled ; upper lip as long as the palate ; leaves di- 

 vided into three linear segments, which are again similarly divided : 

 corolla gaping. Smaller than the last : flowers about five, pale yel- 

 low : palate not projecting, the mouth being open. Perennial : flowers in 

 July : grows in ditches and pools : not common. Somersetshire, Norfolk, 

 Cumberland, Westmoreland ; common in some parts of Ireland and Scot- 

 land. Eng. Bot. vol. iv. pi. 254. Eng. Fl. vol. i. p. 31. Fl. Scot. p. 9. 41. 



6. LY'COPUS. GIPSYWORT. 



Calyx tubular, with five acute segments. Corolla tubular, with 

 four segments, the upper broader and notched. Stamens simple, 

 longer than the corolla, bent ; anthers small. Germen four-cleft ; 

 style thread-shaped, as long as the stamens, stigma cleft. Seeds 

 four, inversely egg-shaped, at the bottom of the calyx Name 

 from lycos, a wolf, and pous, a foot. 11. 



1. L. eiiroptt'us. Water Horehound. Gipsyicort. Leaves deeply 



serrate. Two feet high: allied to the genus Mentha, &c., and like it 



having a four-cornered stem : leaves opposite, narrow, egg-shaped, 

 wrinkled, very deeply serrated : flowers whitish, in dense whorls. Pe- 

 rennial : flowers from July to September : grows on the banks of pools 

 and brooks in gravelly soil : common in England and Ireland ; less fre- 

 quent in Scotland. Eng. Bot. pi. 1105. Eng. FL vol. i. p. 34. 42. 



7. SA'LVIA. SAGE. 



Calyx tubular, ribbed, with two unequal lips. Corolla having 

 the tube dilated upwards, compressed ; upper lip concave ; lower 



