400 XCI. SCROPHULARIACE^. Pentstemon, 



declinate style and stamens ; capsule ovoid or globose, with 2 mem- 

 branaceous, bifid valves ; seeds large, concavo-convex. — ® with oppo- 

 site or verticillate lis., axillary and terminal inflorescence. 



C. VERNA. Nutt. Vernal CoUinsla. Tall Pink. 



Minutely puberulent ; lowest Ivs. ovate or oblong, petiolate, middle and 

 upper sessile, ovate-lanceolate, cordate-amplexicaul, dentate, floral ones lance- 

 linear, entire ; verticillasters 2 — 6-flowered; pedicels many times longer than 

 the flowers. — Banks of streams, shaded or open, N. Y. near Utica, Gray, to 

 Ohio, Locke! la.., Plummer ! A tender herb, 8-— 18' high, branched from the 

 base. Leaves 1 — 2' by J — 1', dilated at base. Pedicels 1 — IJ' long. Corolla 

 5" long, variegated with blue and white. 



8. CHELONE. 



Gr. y(^e\o}vri, a tortoise ; from a fancied resemblance of the flower to the head of that animal. 



Calyx deeply 5-parted, with three bracts at base ; corolla inflated, 

 bilabiate, the fifth filament abortive, smooth above, shorter than the 

 rest ; anthers woolly ; caps, valves entire ; seeds broadly membrana- 

 ceous, winged. — % with opposite Ivs., distinguished from Fcntstcmon 

 chiejly by the seeds. 



C. GLABRA. Snake-head. Salt-rhcvm Weed. 



Smooth ; Ivs. opposite, oblong-lanceolate, acuminate, serrate ; fls. 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. Leaves opposite, of a dark and shining 

 green above, with irregular serratures, and sessile or nearly so. Flowers large, 

 in a short, terminal, dense spike. Corolla white, often tinged with red, inflated, 

 contracted at the mouth, with short, gaping lips. Filaments hairy. Style 

 long, exsert, bending downwards. Aug. Sept. 



ff. jnorpurea. (C. purpurea. Mill?) Lvs. distinctly petiolate, acuminate; 

 cor. rose-purple. — This variety prevails in the Western States ! It is larger in 

 its leaves and flowers. Petioles J — 1' long. Flowers very beautiful. 



9. PENTSTEMON, 



Gr. TTcvTt, (jTr}nov, five stamens (4 perfect and 1 abortive) ; from the character of the flower. 



Calyx deeply 5-cleft ; corolla ventricose, bilabiate ; the fifth filament 

 sterile, bearded, longer than the rest ; anthers smooth ; seeds 00, 

 angular, not margined. — % rarely h, of JV. America, branchiyig, pa- 

 niculate. Lvs. opposite. Fls. shoivy, red, violet, blue or white. 



1. P. PUBEscENs. Soland. (Chelone Pentstemon. Linn.) Beard-tongue. 



Hirsute or glabrous ; radical lvs. ovate or oblong, petiolate, cauline lanceo- 

 late-oblong or lance-ovate, serrulate, sessile ; panicle loose ; cor. tube dilated up- 

 wards, upper lip shortest; sterile sla. longitudinally bearded. — River banks, 

 blulTs, hilJs and barrens. Western N. Y, ! to Ohio ! la. and 111. A handsome 

 plant, 1 — 2f high. Stem round, smooth below, supporting a loose, oppositely 

 branched panicle of bluish-purple flowers. Corolla 1' in length, the barren fila- 

 ment broadest at end. June. 



a. Lvs. narrow and thinly pubescent. 



/?. (P. Isevigatus. Soland.) Lvs. dilated and subamplexicaul, glabrous. 



2. P. DIGITALIS. Nutt. (Chelone digitalis. Sweet.) Fox-glove Pentstemon. 

 Very glabrous or rarely puberulent ; radical lvs. petiolate, oval-elliptic or 



oblong, cauline lanceolate, dilated and amplexicaul at base, serrate or rarely 

 entire ; panicle loose ; fed. erect, spreading ; cor. txibe campanulate-dilated up- 

 wards, upper lip scarcely shorter than the lower ; sterile sla. longitudinally 

 bearded. — Rich soils, Ohio, la. ! to Tenn., 3Jiss Carpenter! Large and splen- 

 did, 3f high. Leaves 6§' by 2', broadest at base and tapering to a long point. 

 Flowers numerous. Corolla 15" long, bluish-purple, varying to white. Jn. Jl. — 

 I am strongly inclined to regard this also as a luxuriant variety of P. pubescens. 



