Scrophularinee—Chelone. aa% 
different popular names in America; as Turtle-head, Snake- 
head, Shell-flower, Balmony, ete. 
2. Ch. major, syn. Ch. Lyénsii.A very handsome robust 
species, 3 to 4 feet high, with broadly cordate serrulate- 
ciliate slightly hairy leaves and large purple flowers. 
14. PENTSTEMON. 
Showy herbaceous perennials with 5 
opposite leaves, the upper often sessile ° ) 
and stem-clasping. Flowers in ter- dl 
minal thyrsoid panicles. Calyx deeply 0 
5-lobed. Corolla tubular, more or less : 
a ialip 
inflated and bilabiate. Fertile stamens i 
4, the fifth sterile one nearly or quite pi Web 
equalling the others. Capsule many- dK | cs 
seeded, opening by valves; seeds wing- a” \ ¥ 
less. An exclusively American genus 
numbering about fifty species, from 
the north temperate and subtropical 
regions. The name is a compound of 
qévte, five, and orjwwr, a stamen, from 
the barren stamen being conspicuous. 
1. P. acumindtus.—A very distinct 
species about 18 inches high with 
lanceolate acuminate glabrous glaucous 
leaves and reddish purple flowers. 
Corolla slightly bilabiate, with spread- 
ing lobes. 
2. P. barbatus, syn. Chelone bar- 
bata.—A very beautiful species. Stems 
slender, 2 to 3 feet high. Leaves 
narrow, entire, glabrous. Flowers bright 
scarlet, rose, or white. Corolla-tube 
narrow, scarcely inflated, limb dis- 
tinctly bilabiate, lower lip bearded. 
In a robust variety called P. Torreyr 
the lip is not bearded, and the stems 
attain a height of 6 feet. A native of 
Mexico, flowering in July. 
3. P. diffiisus (fig. 189).—This is a Fig. 189. Pentstemon diffusua. 
spreading plant from 12 to 18 inches (habe size:) 
high, with broadly ovate-lanceolate sessile deeply serrate leaves 
