178 ENGLISH BOTANY. 
GENUS XII— P EDICULARIS. Tournef. 
Calyx tubular-bellshaped, inflated and bladdery after flowering, 
with 2 to 5 irregular teeth or lobes, or bilabiate with the upper 
lip entire or 2-toothed, the lower 3-toothed. Corolla tubular, 
bilabiate ; upper lip helmet-shaped, much compressed laterally, 
entire or 2-toothed, or produced into a beak at the apex; lower 
lip with the lobes sub-erect or spreading, the central lobe com- 
monly smaller than the others. Stamens 4, didynamous, placed 
under the upper lip of the corolla ; anthers 2-celled, the lobes not 
mucronate, except in a single species. Capsule ovoid or lanceolate, 
laterally compressed, generally falcate or oblique, loculicidally 
dehiscing by 2 valves. Seeds rather few, large, ovoid-subtrigonous. 
Herbs, with the leaves alternate or verticillate, rarely opposite, 
generally pinnate or pinnatifid. Flowers in spikes, or more rarely 
racemes, red or yellow. 
The name of tins genus of plants is derived from pediculus, a louse, on account of 
its being supposed to produce such vermin in sheep. 
SPECIES I— PEDICULARIS PALUSTRIS. Linn. 
Plate DCCCCXCVI. 
Reich. Ic. Fl. Germ, et Helv. Vol. XX. Tab. MDCCLIX. Figs. 2, 3 j MDCCCXXIV. 
Figs. 19—24. 
Billot, Fl. Gall, et Germ. Exsicc. No. 431. 
Stem erect, solitary, usually paniculately branched throughout. 
Leaves alternate or sub-opposite, pinnatipartite, with the seg- 
ments pinnatifid or bi-pinnatifid, the ultimate segments blunt. 
Flowers in lax spikelike racemes. Calyx in fruit ovate-ovoid, 
hispid, with 2 lateral lobes, which are again unequally crenate- 
lobed, crimped and glabrous at the margins and along the 
sinus. Upper lip of corolla not rostrate, with the margin on each 
side furnished with a triangular-subulate tooth immediately below 
the apex, and another blunt tooth about the middle. Capsule 
ovate-ovoid, curved nearly regularly above from the base to the 
apex of the beak, which is on a continuation of the middle line 01 
the capsule. 
In bogs and marshes. Rather common, and generally dis- 
tributed. Plentiful in the North. 
England, Scotland, Ireland. Biennial. Spring to Autumn. 
