520 ORDER SG. SCROPHULARIACEJ5. 



opening irregularly by a rift below the apex. It Mexican, climbing by 

 their petioles. Lvs. mostly alternate. Ped. long, flexuous, axillary. 



1 L. erubescens Zucc. Lvs. triangular-cordate, coarsely dentate or angular- 

 lobed, pubescent ; cal. segm. ovate, hirsute ; cor. pubescent, limb at length wide- 

 spread. A. hairy climber, with soft, rugous Ivs. 2 to 4' broad. Cor. of a rich red, 

 2 to 3' long, with an ample border. 



2 L. scandena Don. Lvs. cordate-ovate, acuminate, coarsely dentate, mi- 

 nutely puberulent; cal. segm. ovate-lanceolato ; cor. glabrous, limb erect-spread- 

 ing. Less hairy and with smaller flowers. Fls. scarlet. 



9. SCROPHULA'RIA, L. FIGWORT. (So named from the resem- 

 blance of the roots to scrofulous tumors.) Calyx in 5 acute segments; 

 corolla subglobous, limb contracted, sub-bilabiate, lip with an internal, 

 intermediate scale (sterile filament) ; capsule 2-cellcd ; valves with 2 

 inflated margins. Herbs or suffruticous, often foetid. Lvs. opposite. 

 Cymes in simple or compound terminal, thyrsoid panicles. 



S. nodosa L. Glabrous; st. angled; Ivs. ovate, ovate-oblong, or the upper lan- 

 ceolate, acute, serrate or subincised, base broadly cordate or rounded or acutish ; 

 thyrse oblong, leafless or scarcely leafy at base ; cymes pedunculate, loosely many- 

 flowered; cal. segments broadly ovate, obtuse, slightly margined; sterile anlh. 

 a roundish, green scale on the corolla. If In woods and hedges, Can., and U. S. 

 Rare in N. Eng. Stem 4 6f high, with paniculate, opposite branches abovo. 

 Leaves 3 7' long, smooth, thin, often long-acuminate. Fls. ovoid, 3 4" long. 

 Limb very small, of a dull olive color. July Oct. (S. Marilandica L, and lance- 

 olata Ph.) 



10. CHELO'NE, L. TURTLE-HEAD. SNAKE-HEAD. (Gr. %ekuv7] r a 

 tortoise ; from the appearance of the flower.) Calyx deeply 5-parted, 

 with '3 bracts at base ; corolla inflated, bilabiate, the fifth filament abor- 

 tive, smooth above, shorter than the rest; anthers woolly ; caps, valves 

 entire ; seeds broadly membranaceous, winged. U with opposite Ivs., 

 distinguished from Pentstemon chiefly by the seeds. 



1 C. glabra L. Smooth ; Ivs. subssssile, oblvng-Ianceolate, acuminate, serrate ; fig. 

 densely spiked. A plant of brooks and wet places (Can. and U. S.), with flowers 

 shaped much like the head of a snake, the mouth open and tongue extended. 

 Stem mostly simple, 2f high, erect. Lvs. of a dark and shining green above, with 

 irregular serratures, sessile or nearly so. Fls. large, in a short, terminal, dense 

 spike. Cor. white, often tinged with red, inflated, contracted at the mouth, with 

 short, gaping lips. Aug., Sept. 



/?. PURPUREA. Lvs. distinctly petiolate, acuminate; cor. rose-purple. This 

 variety prevails in the Western States. It is larger in its leaves and flowers. 

 Petioles 1' long. Flowers very fine. (C. purpurea Mill. ?) 



2 C. Lyoni Ph. Smooth ; Ivs. ovate, acuminate, petiolate, serrate, the lower cor- 

 date; 11s. in a dense spike. N. Car. to Ga., along the Mts. Stem 1 2f high. 

 Leaves 3 6' long, 2 4' wide, veins very prominent beneath. Fls. purple, 1' in 

 length, similar to No. 1. The spike as in that species, often branches, becoming 

 somewhat capitate. Jl. Sept. 



11. PENTSTE'MON, L. BEARD-TONGUE. (Gr. irevre, five, <rr/y//ov, 

 a stamen ; on account of the fifth large abortive stamen.) Calyx deeply 

 5-cleft ; corolla elongated, often ventricous, lower lip 3-lobed, spreading ; 

 the fifth filament sterile, bearded, longer than the rest or about as long ; 

 anthers smooth ; seeds oo, angular, not margined. 2 rarely ^>, of N. 

 America, branching, paniculate. Lvs. opposite. Fls. showy, red, violet, 

 blue or white. 



* Leaves dissected. Sterile filament, bearded at tbo apex No. 1 



* Leaves undivided. Sterile filament glabrous or nearly so Nos. 2, S, 9 



Sterile filament bearded. Lower lip bearded inside Nos. S, 1 



Lower lip not bearded Nos. 4, 5, (5 



