CL. XIV.] DIDYNAMIA ANGIOSPERMIA. 25? 



pointing one way ; corolla open, with the lower lip bent downward ; 



leaves nearly all entire. 'This resembles the last, but is smaller : corolla 



smaller, deep-yellow, with some red spots about the mouth. Annual : 

 flowers in July and August: grows in elevated woods : rare. Eng. Bot. 

 vol. xii. pi. 804. Eng. Fl. vol. iii. p. 126. 902. 



25. LATHR^'A. TOOTHWORT. 



Calyx of one leaf, bell-shaped, with four deep, erect, nearly 

 equal marginal segments. Corolla gaping; tube longer than the 

 calyx, limb tumid; upper lip vaulted, acute; lower lip smaller, 

 spreading, obtuse. Nectary a notched, depressed, very short 

 gland, placed on the receptacle, at the lower side of the germen. 

 Filaments awl-shaped, shorter than the corolla, concealed by its 

 upper lip ; anthers obtuse, coming together. Germen roundish, 

 compressed. Style cylindrical, as long as the stamens; stigma 

 abrupt, notched, bent downwards. Capsule roundish, obtuse, 

 with a small point, one-celled, two-valved, invested by the en- 

 larged calyx. Seeds numerous, roundish, attached to a spongy, 

 longitudinal receptacle in the middle of each valve. Name, from 

 lathraios, concealed. 304. 



1. L. squamdria. Greater Toothwort. Stem simple; flowers pendu- 

 lous, their lower lip three-cleft. Stem rounded, six or eight inches 



high : leaves egg-shaped, thick, entire, smooth, cream-coloured, imbri- 

 cated : flowers axillar, solitary : corolla dull-purple, its upper lip deeply 

 cleft. Perennial : flowers in April : grows in shady places, parasitic on 

 the roots of trees : frequent. Eng. Bot. vol. i. pi. 50. Eng. FL. vol. iii. 

 p. 157. 903. 



26. PEDICULA'RIS. LOUSEWORT. 



Calyx of one leaf, with a roundish, tumid, somewhat compressed 

 tube, with five, sometimes only two, unequal, leafy, jagged seg- 

 ments. Corolla gaping; tube oblong, unequal; upper lip nar- 

 rower, erect, vaulted, compressed, notched; lower lip dilated, flat, 

 deeply divided into three obtuse segments, the middle one nar- 

 rower. Nectary a gland under the germen. Filaments thread- 

 shaped, concealed by the upper lip ; anthers two-lobed, acute at 

 the lower part, compressed. Germen egg-shaped. Style thread- 

 shaped, longer than the stamens ; stigma simple, bent downwards. 

 Capsule oblong, pointed, oblique, two-celled, two-valved, the par- 

 titions from the centre of each valve. Seeds few, angular, pointed, 

 attached to a nearly globular receptacle at the base Name, from 

 pediculus, a louse, it being supposed to cause sheep to be infested 

 with ticks. 305. 



1. P. pal&stris. Marsh Lousewort. Stem solitary, branched ; calyx 



egg-shaped, hairy, ribbed, with two unequally notched lobes. Stem 



erect, a foot high, much branched : leaves stalked, doubly pinnatifid : 

 flowers axillar, opposite, solitary, rose-coloured. Annual : flowers in 

 June and July : grows in marshes and wet pastures : common. Eng. 

 Bot. vol. vi. pi. 399. Eng. Fl. vol. iii. p. 129. 904. 



2. P. sylvdtica. Common Lousewort. Stems several, spreading, sim- 



