532 ORDER 86. SCROPHULARIACE^E. 



2 C. sessilifldra Ph. Pilose-pubescent; Ivs. sessile, clasping, oblong-linear, 

 mostly trifid with the lobes divaricate ; cal. sessile, elongated ; spikes dense ; cor. 

 long, exserted, arched, segments of the lower lip acuminate. 2| Prairies, Wi.s. 

 (Lapham) and westward. Stem 8 14' high, several from the same root, simple, 

 leafy. Leaves grayish, 2 2|' long. Flowers crowded. Corolla tube slender. 

 2 3' in length, greenish- white, with a slight tinge of purple. Style and stamens 

 enfolded by the upper lip, and a little exserted. May. (E. grandiflora Nutt.) 



3 C. septentrionalis Lindl. Lvs. linear, undivided, the upper lanceolate, the 

 floral subovate, subdentate at the end. all 3-veined; cal. with acute teeth, shorter 

 than the corolla. 1 A hardy inhabitant of Alpine and high northern regions, 

 White Mts., N. H. to Hudson's Bay. St. a foot high, simple. Lvs. sessije, 

 smoothish, becoming lanceolate towards the upper part of the stem, and near 2' 

 long. Tuft of fls. at top of the stem. Bracts broader and shorter than the leaves, 

 5 to 7 -veined, of a pale straw color tipped with purple. Fls. straw-colored, nearly 

 concealed by the bracts. Aug. (Bartsia pallida Ph.) 



31. SCHW AL'BEA, L. CHAFF-SEED. (In honor of Schwalbe, a German 

 botanist.) Calyx tube 10-ribbed, inflated, obliquely 4-cleft, upper divi- 

 sion small, lower large, emarginate or 2-toothed ; corolla ringent, upper 

 lip entire, arched, lower S-lobed ; capsule oblong ; seeds many, chaft'y. 

 2 With alternate leaves and flowers in a terminal spike. 



S. Americana L. In sandy barrens and marshes, N. Y. to Fla. and La. Stem 1 

 2f high, pubescent, stout, simple. Leaves sessile, ovate-lanceolate or oblong, 

 3-veined, 1' to 20" long, with a ciliate margin. Bracts ovate, acuminate, dimin- 

 ishing upwards. Flowers on simple, alternate, very short pedicels, in a long 

 spike. Corolla dull purple or brownish-yellow, twice as long (1 1]') as the per- 

 manent, strongly-ribbed calyx. Jn. 



32. PEDICULA^RIS, L. LOUSEWORT. (Lat. pediculus, a louse ; prob- 

 ably from its efficacy in destroying that insect.) Calyx ventricous, 2 to 

 5-cleft, the segments leafy, or sometimes obliquely truncate ; corolla 

 vaulted, upper lip compressed, emarginate ; lower lip spreading, 3-lobed ; 

 capsule 2-celled, oblique, mucronate; seeds angular. Herbs. Lvs. 

 alternate, rarely subopposite, often pinnatifid. Fls. spicate. 



1 P. Canadensis L. Hirsute; st. simple; Ivs. alternate, petiolate, lance-oblong, 

 pinnatifid, lobes oblong-ovate, crenate-dentato ; spike shore, dense, leafy; caL 

 truncate downwards; cor. galea abruptly incurved, with 2 setaceous teeth; caps. 

 ending in a prolonged ensiform leak. If Pastures and low grounds, U. S. and 

 Can. St. erect, If high. Lvs. 3 to 6' by 1 to 2', chiefly radical. Spike short, 

 hairy, with a few small leaves at the base. Cor. yellowish and purple, the upper 

 lip long, erect, forming a galea or helmet, cut square off at the end, with a bristle- 

 like tooth at each corner. Beak of the capsule often near 1' in length. May 

 Jl. (P. gladiata MX.) 



2 P. lanceolata MX. Nearly glabrous; st. branched; Ivs. svbopposite, briefly 

 petiolato or sessile, oblong-lanceolate, doubly incised crenate ; spike rather dense ; 

 cal. 2-lobed ; cor. galea as long as the lip, incurved over it and closing the throat; 

 caps, short, ovoid. if In alluvial woods, N. Y. to Wis. (Lapham), S. to Va. St. 

 1 to 2f high, smooth, with pubescent lines, nearly opposite Ivs., and a few axillary 

 branches. Lvs. 3 to 5' by 1 to !'. Spike 1 to 3' in length, with ovate-lanceolate 

 bracts. Cal. and cor. smooth, the latter greenish yellow, 1' long. Style a little 

 exserted. Sept. (P. pallida Ph.) 



33. RHINANTHUS, L. YELLOW RATTLE. (Gr. f>iv, nose, d 

 alluding to the singular appearance of the compressed galea.) Calyx 

 4-toothed, ventricous; corolla tube cylindrical, as long as the calyx, 

 limb ringent, galea appendaged, compressed, lip broader, deeply divided 

 into 3 obtuse segments ; capsule 2-valved, compressed, obtuse. CD Erect, 

 with opposite Ivs. 



