400 XCIL SCROPHULARIACEH, __ Penrstemon. 
declinate style and stamens; capsule ovoid or globose, with 2 mem- 
branaceous, bifid valves; seeds large, concavo-convex.—@ with oppo- 
site or verticillate lvs., axillary and terminal inflorescence. 
C. verna. Nutt. Vernal Collinsia. Tall Pink. 
Minutely puberulent; lowest lvs. 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! Ia., Plummer! A tender herb, 8—18’ high, branched from the 
base. Leaves 1—2’ by 3—1’, dilated at base. Pedicels 1—1}/ long. Corolla 
5’ long, variegated with blue and white. 
8. CHELONE. 
Gr. xewvn, 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 lvs., distinguished from .Pentstemon 
chiefly by the seeds. 
C. cuasra. Snake-head. Salt-rheum Weed. 
Smooth ; lvs. opposite, oblong-lanceolate, acuminate, serrate; fls. densely 
spiked.—A plant of brooks and wet places (Can. and U. 8.), 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. 
B. purpurea. (C. purpurea. Mill?) Lvs. distinctly petiolate, acuminate ; 
cor. rose-purple.—T his variety prevails in the Western States! It is larger in 
its leaves and flowers. Petioles 3—1’ long. Flowers very beautiful. 
9. PENTSTEMON. 
Gr. mevre, oTnpov, 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 k, of IN. America, branching, pa- 
niculate. Lvs. opposite. Els. showy, red, violet, blue or white. 
1. P. pusescens. 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 sta. longitudinally bearded.—River banks, 
bluffs, hills and barrens, Western N. Y.! to Ohio! Ia. and Ill. 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. i 
a. Lws. narrow and thinly pubescent. 
B. (P. levigatus. Soland.) Lvs. dilated and subamplexicaul, glabrous. 
2. P. piairaAuis. 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; ped. erect, spreading; cor. tube campanulate-dilated up- 
wards, upper lip scarcely shorter than the lower; sterile sta. longitudinally 
bearded.—Rich soils, Ohio, Ia.! to Tenn., Miss Carpenter! Large and splen- 
did, 3f high. Leaves 64’ by 2’, broadest at base and tapering to a long point. 
Flowers numerous. Corolla 15” long, bluish-purple, varying to white. Jn. Jl.— 
{ am strongly inclined to regard this also as a luxuriant variety of P. pubescens, 
