CL. II.] DIANDKIA 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. vulgdris. 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 

 becomes 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. Perennial : flowers in July : grows in ditches and 

 pools : frequent. Eng. Bot. vol. iv. pi. 253. Eng. FL 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 Morayshire. Eng. 

 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 

 divided into three linear segments, which are again similarly 



divided ; corolla gaping. -Smaller than the last : flowers about 



five, pale yellow : 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 Scotland. 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. 1 1 . 



1. L. europa'us. Water Horehound. Gipsywort. 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. Perennial : flowers from July to September : grows on 

 the banks of pools and brooks in gravelly soil : common in 

 England and Ireland ; less frequent 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 



