320 SCROPHULARIACEJE. (FIGWORT FAMILY.) 



23. CASTILLEIA, L. 



Calyx tubular, compressed, cleft at the summit; the lobes entire or 2-cleft. 

 Tube of the corolla included in the calyx ; the upper lip long, narrow, curved, 

 laterally compressed, and enclosing the four didyuamous stamens ; the lower 

 lip short, 3-lobed : anther cells oblong-linear, unequal ; the outer one fixed by 

 the middle, the inner pendulous. Capsule loculicidal, many-seeded. Herbs, 

 witli alternate entire oriucisely-lobed leaves, the uppermost colored, flowers 

 in leafy spikes or racemes. 



1. C. COCCinea, Spreng. Stem hairy; radical leaves clustered, nearly 

 entire ; those of the stem piuuatintl, with the lobes linear; the floral ones 3- 

 lobed, bright scarlet at the summit ; corolla greenish yellow. Damp soil in 

 the upper districts. June - August. (2) Stem 1- \\ high. 



24. SCHWALBEA, L. 



Calyx tubular, oblique, 10-12-ribbed,4-toothed, the upper tooth very small, 

 the lowest elongated, 2-cleft. Corolla bilabiate ; the upper lip oblong, arched, 

 enclosing the four didyuamous stamens; the lower rather shorter, obtusely 

 3 lobed : anther cells parallel, equal. Capsule oblong, acute, loculicidally 

 2-valved, many-seeded. 



1. S. Americana, L. Sandy pine barrens. May- June. ^ Stem 

 simple, 1- l high, pubescent. Leaves alternate, lanceolate, entire, sessile; 

 the lower ones oblong, the uppermost linear, small. Flowers in a spiked 

 raceme. Corolla 1' long, yellow and purple. 



25. PEDICULARIS, L. 



Calyx tubular, more or less cleft at the apex, variously 2 - 5-toothed. 

 Corolla bilabiate ; the upper lip compressed, curved and bearded at the apex, 

 enclosing the 4 didynamous stamens ; the lower lip 2-crested above, 3-lobed, 

 with the lateral lobes larger and rounded: anthers transverse. Capsule 

 ovate or lanceolate, compressed, the upper portion empty. Herbs, with 

 finely and pinnately divided leaves. Flowers in leafy racemes or spikes. 



1. P. Canadensis, L. Stem simple, hairy (6' -9' high); leaves alter- 

 nate, smooth, oblong or lanceolate, pinnatifid ; the lobes oblong, simply or 

 doubly crenate ; spike dense, capitate, elongated in fruit ; corolla pale yellow 

 and purple ; the upper lip hooked, 2-awned under the apex ; capsule lanceo- 

 late, exserted. Shady woods and banks. March - April. 2/ Stem bear- 

 ing slender leafy rooting runners. Fruiting spike 3'- 5' long. 



2. P. lanceolata, Michx. Stem tall (l-3), smooth, simple or spar- 

 ingly branched ; leaves nearly opposite, lanceolate, pinnately toothed, the 

 teeth crenate ; spike dense ; corolla pale yellow, the upper lip curved, awnless, 

 the lower erect ; capsule ovate, scarcely exserted. Swamps on the moun- 

 tains of North Carolina, and northward. August -Sept. 



26. MELAMPYRUM, Tourn. 



Calyx bell-shaped, with 4 subulate teeth. Corolla bilabiate ; the tube 

 dilated above ; the upper lip short, compressed, obtuse, straight ; the lower 



