CL. XIV.] DIDYNAMIA ANGIOSPERMIA. 257 



pairs, 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 ele- 

 vated woods : rare. Eng. Bot. vol. xii. pi. 804. Eng. Fl. vol. iii. 

 p. 126. 902. 



25. LATHBJE'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 



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

 ilaments 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 j 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 pen- 

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



inches high : leaves egg-shaped, thick, entire, smooth, cream-co- 

 loured, imbricated: 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. 127. 903. 



26. PEDICULA'EIS. LOUSE WORT. 



Calyx of one leaf, with a roundish, tumid, somewhat com- 

 pressed tube, with five, sometimes only two, unequal, leafy, 

 jagged segments. Corolla gaping ; tube oblong, unequal ; upper 

 lip narrower, erect, vaulted, compressed, notched ; lower lip di- 

 lated, flat, deeply divided into three obtuse segments, the middle 

 one narrower. 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 partitions 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.palustris. 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. An- 

 nual : flowers in June and July : grows in marshes and wet pas- 

 tures : common. Eng. Bot. vol. vi. pi. 399. Eng.Fl. vol. iii. p. 129. 



904. 



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



