380 FIGWORT FAMILT. 



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

 refers), SNAKEHEAD, BALMONY. "U 



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

 strict, witli 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. obliqua, Linn. Looser, with spreading branches ; leaves broad- 

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

 color. Va. to 111., and S. 



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

 ence of the 5th .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. % 



* Plant more or less ptihescent or viscid-glandular, at least above (rarely 

 glabrous in the last) ; often glabrous below. 



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



P. laevig^tus, 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 and open ; sterile filament with a thin beard 

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



Var. Digitalis, Gray. Is generally taller (often 5°) with a larger and 

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



1- -1- Corolla purple, blue or yellow {rarely whitish in the first). 



++ Flowers glabrous loithin. 



P. Cob^a, 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. 



-M. 4-* Floicers bearded loithin. 



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

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

 small flowers. 



P. pub^scens, Soland. Somewhat clammv-nubescent, 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. ccerOleo-purpOreus, Gray, blue-purple and violet. Rocky Moun- 

 tains and W. ^ ^ Plant smooth throughout, often glaucous. 



t- Leaves sharply serrate. 



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

 clasping; fluwers in a r;u;eme-like, one-sided jmnicle ; corolla ventricose 

 above, reddisli-purple or rose-colored ; sierilc filament bearuea. Common 

 in gardens, and varies greatly in cultivation. Mexico. 



