SCROPHULARIACEJE. 259 PKNTSTEMON. 



Gr. o'xii^*', to cut, uv^oi, a flower; in allusion to Xhe numerous divisions of 

 the showy corolla. Herbaceous. Lvs. alternate, pinnatifid. Peduncles 

 supra-axillary. 



S. PINNATUS. — The only species. It is one of the most delicate and 

 beautiful of our cultivated flowers, native of Chili. Stem a foot or more high, 

 branched. Leaves on short stalks, pinnate or rather deeply pinnatifid. 

 Clusters of flowers opposite the leaves. Calyx and stalks viscidly pubescent. 

 Corolla with numerous divisions, purple and yellow, with a dark spot in the 

 midst. Pinnated Schizanthus. 



6. CHELONE. 

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

 inflated, bilabiate, the fifth filament abortive, smooth above, 

 shorter than the rest; anthers woolly. 



Gr. yi'K(ovrt^ a tortoise ; from a fancied resemblance of the flower to the head 

 of that'animal. Herbs with opposite leaves. Cor. tubular, border small, 

 closed, upper lip emarginate, lower lip slightly trifid. Caps. 2-celled, 

 2-valved. Seeds with a membranous margin. 



C. GLABRA. 



Smooth ; leaves opposite, oblong-lanceolate, acuminate, serrate ; floicers 

 densely spiked. A plant of brooks and wet places, with flowers shaped much 

 like the head of a snake, the mouth open and tongue extended. Stem mostly 

 simple, 2 feet 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. CoioUa white. often tinged with red, inflated, 

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

 long, exsert, bending downwards. Aug. Sept. Per. Snake-head. 



7. PENTSTE'MON. 



Calyx deeply S-cleft ; corolla ventricose, bilabiate ; the 

 fifth filament sterile, bearded, longer than the rest; anthers 



smooth. 



Gr. TTivri, five, and a-Tn^ov, stamen ; this genus, like Chelone, from which 

 it was taken, has 5 stamens, 4 perfectand 1 abortive. Herbs (rarely sufiruti- 

 cose) with opposite leaves and the flowers in panicles. Caps. 2-celled, 2-valv- 

 ed, ovoid. Seeds numerous, angular. 



1. P. PUBE'sceNS. WiUd. Chelone Pentsemon. L. 



5/'cwi hairy ; leaves serrulate, oblong-lanceolate, sessile ; /o?cer5 paniclod ; 

 sterile filament bearded from the end to the middle. River banks ; hill sides. 

 About Fort Niagara, &c Stem 1 — 2 feet high, round, smooth below, 

 pubescent above, with a diffuse, oppositely branching panicle at top. Leaves 

 smooth, lanceolate, entire or denticulate, the lower ones narrowed at base into 

 a footstalk. Flowers purple with a light colored throat. Calyx equalling the 

 shorttube. Corolla an inch in length. Barren filament broader above, the 

 two edges densely bearded. Style about as long as stamens, persistent. 

 June. Per. .' Beard-tongue. 



a. Leaves broad and smooth. 



/3. Leaves narrow, hairy and obscurely denticulate. 



