400 FLORA OF TEXAS. 



lobes linear; the floral ones 3-lobed, bright scarlet at the 

 summit; corolla greenish yellow. Stem l°-li° high. 



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, inclosing the 4 didyna- 

 mous stamens ; the lower lip 2-crested above, 3-lobed, with 

 the lateral lobes larger and rounded; fl^?^/Aer5 transverse; 

 capsule ovate or lanceolate, compressed, the upper portion 

 empty. — Herbs, with finely and pinnately divided leaves; 

 floivers in leafy racemes or spikes. 



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

 leaves alternate, 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; cajjsule 

 lanceolate, exserted. Stem bearing slender leafy and root- 

 ing runners; fruiting spike 3-5' long. Perennial. 



P. LANCEOLATA, Michx. Stem tall (l°-3°), smooth, sim- 

 ple or sparingly branched ; leaves nearly opposite, lanceo- 

 late, pinnately toothed, the teeth crenate; spike dense; 

 corolla pale yellow, the upper lip curved, awnless, the lower 

 erect ; capsule ovate, scarcely exserted. 



85. ACANTHUS FAMILY. Order, Acanthaceje. 



Chiefly herhs, with opposite (rarely alternate or clustered) 

 undivided exstipulate leaves, and bracted, often showy 

 floivers ; calyx 5-parted; corolla more or less bilabiate, 

 5-lobed, twisted in the bud; fertile stamens 2 or 4, inserted 

 on the tube of the corolla ; anthers 2-celled ; ovary free ; 

 style single ; stigma entire or 2-lobed ; capsule loculicidally 

 2-valved, 2-celled, 4-several- seeded, opening elastically; 



