46 
DIDYNAMIA, GYMNOSPERMIA. 
axillary, opposite-pedicellate; calicine segments 
leafy, cut-dentate. — Willd. and Pursh. 
Icon. Lam. lllust. t. 529. f. 2. 
About two feet high and bushy. Leaves resembling those 
of Pedicularis, or Lousewort. Flowers yellow, large. In shady 
woods on the Schuylkill above the falls, and in similar situa- 
tions in Jersey. In the woods of the Woodlands; tolerably 
frequent. Biennial. July, August. 
287. PEDICULARIS. Gen.pl. 1003. {^Pedicular es,') 
Calix ventricose^ half 5-cleft. Galea (or up- 
per lip of the corolla) emarginate and com- 
pressed. Capsule bilocular^ mucronate;, ob- 
lique. Seeds angular^ timicated. — JSTutt. 
pallida. 1 . p, stem branched, tall, glabrous; leaves sub- 
opposite, lanceolate, crenate-dentate; spike leaf- 
less, glabrous, galea of the corolla obtuse ; ca- 
lix bifid, roundish. — Herh. Banks. 
P. Virginica, Lainark. 
P. serotina, Muhl. 
Pak-Jlowered Louse-wort. 
About a foot or two feet high, with pale or straw-yellow 
flowers. This, which is so common a species at Lancaster, is 
rare in this vicinity. I have only found it sparingly in the 
swampy thickets near Woodbury, Jersey. Mr. Nuttall thinks 
it the JP. lanceolata, of Mich. Perennial. August, September. 
Canadensis. 2. P, stem simple, leaves pinnatifid, cut-dentate; 
capitulum leafy at the base, 'hirsute; galea of 
the corolla bristly-bidentate, calices at length, 
truncate. — Willd. and Pursh. 
Common Louse-%vort. 
About six or ten inches high. Flowers whitish, sometimes 
tinged with purple. In meadows and damp low woods; com- 
mon. Perennial. May, June. 
