330 FIGWORT FAMILY. 



23. CHELONE, TURTLEHEAD (to which the name, from the Greek, 

 refers), SNAKEHEAD, BALMONY. 2 



C. glabra, Linn. The common species, of wet places ; l°-2° high, 

 strict, with lanceolate or lance-oblong, appressed-serrate leaves on very 

 short petioles, and white or rose-tinged corolla 1' or more long ; bracts 

 not ciliate. 



C. obllqua, Linn. Looser, with spreading branches ; leaves broad- 

 lanceolate or oblong, deeply serrate ; bracts cUiolate ; corolla deep rose- 

 color. Va. to 111., and S. 



24. PENTSTEMON. (Greek : meaning 5 stamens ; refers to the pres- 

 ence of the 6th stamen, which, however, has no anther.) Showy North 

 American and a few Mexican plants, chiefly Western ; two or three are 

 wild E. ; several are in cultivation. Flowers late spring and summer, y. 



» Plant more or less pubescent or viscid-glandular, at least above (rarely 

 glabrous in the last) ; often glabrous below. 



■v- Corolla white, or only purplish-tinged. 



P. laevigatas, Soland. Inflorescence pubescent, but plant (2°-4°) 

 glabrous below ; leaves nearly entire, ovate-lanceolate or somewhat 

 oblong, glossy, firm, the base clasping; corolla abruptly and broadly 

 inflated, the throat wide arid open ; sterile filament with a thin beard 

 above. Rich soil, Penn., W. and S. 



Var. Digitalis, Gray. Is generally taller (often 6°) with a larger and 

 purer white corolla which is more abruptly inflated. Penn. , W. 



■*- i- Corolla purple, blue or yellow (rarely whitish in the first). 



** Flowers glabrous within. 



P. Cobsea, Nutt. Plains from Kan., S.; l°-2° high, stout, with 

 ovate often denticulate thick leaves, a slightly clammy, few-flowered 

 panicle or raceme, pale purplish or whitish corolla about 2' long and 

 abruptly much inflated above the narrow base, the border 2-lipped, but 

 the oblong lobes similar ; the sterile filament bearded. Cult. 



++ *+ Flowers bearded within. 



P. ovdtus, Dougl. Ore.; an early blue-flowered species, puberulent or 

 pubescent, with ovate or lance-ovate serrate leaves, and open panicle of 

 small flowers. 



P. pube'scens, Soland. Somewhat clammy-pubescent, or smoothish 

 except the panicle, l°-3° high, variable ; stem leaves lanceolate ; flowers 

 nodding, blush commonly tinged with some purplish or violet; the 

 plainly 2-lipped corolla (1' long) with gradually enlarging tube concave 

 on the lower, convex on the upper side, a sort of palate almost closing the 

 mouth ; sterile filament yellow-bearded down one side. Dry soil. Com- 

 mon. (Lessons, Fig. 297.) 



P. confertus, Dougl. Sometimes glabrous throughout; l°-2°, with 

 oblong or lance-oblong or even linear, nearly or quite entire leaves ; 

 inflorescence spike-like, interrupted and naked ; corolla small, cream- 

 color or sulphur-color, or in 



Var. ccerQIeo-purptireus, Gray, blue-purple and violet. Rocky Moun- 



ms an w. ^ ^ pj an f smoo th throughout,, often glaucous. 

 +- Leaves sharply serrate. 



P. campanulatus, Willd. Leaves lanceolate, acuminate, the base 

 clasping ; flowers in a raceme-like, one-sided panicle ; corolla ventricose 

 above, reddish-purple or rose-colored ; sterile filament bearded. Common 

 in gardens, and varies greatly in cultivation. Mexico. 



