520 Obdeb 8C— SCROPHULARIACE.S. 



opening irregularly by a rift below tbe apex. — 2f. 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 lvs. 2 to 4' broad. Cor. of a. rich red, 

 2h to 3' long, with au ample border. 



2 I*, scandens Don. Lvs. cordate-ovate, acuminate, coarsely dentate, mi- 

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

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



9. SCROPHULA'RIA, L. Figwort. (So named from tbe resem- 

 blance of tbe 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 -celled; valves with 2 

 inflated margins. — llcrbs or suffruticous, often fcetid. Lvs. opposite. 

 Cymes in simple or compound terminal, thyreoid panicles. 



S. nodosa L. Glabrous; st. angled; lvs. ovate, ovate-oblong, or tho upper lan- 

 ceolate, acute, serrate or subincised, baso broadly cordate or rounded or acuttsh ; 

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

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

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

 Rare in N. Eng. Stem 4 — Gf high, with paniculate, opposite branches above. 

 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. Slarilandica L, and lance- 

 olata Ph.) 



10. CHELATNE, L. Turtle-heao. Snake-head. (Gr. xeXuv?], a 

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

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

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

 entire; seeds broadly membranaceous, winged. — U with opposite lvs., 

 distinguished from Pentstemon chiefly by the seeds. 



.1 C. glabra L. Smooth ; lvs. subssssile, obhng-lancsolate, acuminate, serrate ; fls. 

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

 shaped much liko tho 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 

 Bpiko. Cor. white, often tinged with red, inflated, contracted at tho mouth, with 

 short, gaping lip3. Aug., Sept. 



(3. pubpubea. Lvs. distinctly petiolate, acuminate; cor. rose-purple. — This 



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



Petioles i — 1' long. Flowera very fine. (0. purpurea Mill.?) 

 2 C. Lyoni Ph. Smooth ; lvs. ovale, acuminate, petiolate, serrate, the lower cor- 

 date; fls. 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. Tho spike as in that species, often branches, becoming 

 sornowhat capitate. Jl. — Sept. 



11. PENTSTE'MON, L. Beabd-tongue. (Or. ntv-e, five, crfi/iov, 

 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 tbe rest or about as long ; 

 anthers smooth ; seeds oo, angular, not margined. — 2f. rarely *?, of N. 

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

 blue or white. 



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



* Leaves undivided. — Sterile fdament glabrous or nearly so Nos. 2, 8, 9 



—Sterile filament bearded. — Lower Up bearded inside Nos. 3, 7 



— Lower lip not bearded Nos. 4, 5, 6 



