SCROPHL'LARIACE.*:. (KI(;WUKT FAMILY.) 381 



2. O. parviflbra, Dougl. Small; lower leaves ovate or rounded, the 

 upper obloug-lanceulate, mostly entire; whorls 2-Gjluicercd ; Jlouers short- 

 ped uncled ; the small (blue) corolla scarce! 1/ exceeding the caiijx. — Shore of 

 L. Superior, N. Mich., aiitl westward. 



6. CHE LONE, Touru. Tuutle-hkad. Sn vKi;-iir.\i). 



Calvx of 5 distinct imbricated sepals. Corolla inflated-tnl)nlar, with tlie 

 mouth a little open ; upper lip broad and arched, keeled in the middle, notched 

 at the apex ; the lower woolly-bearded in tiie throat, 3-lobed at the apex, the 

 middle lobe smallest. Stamens 4, with woolly filaments and very w<^olly 

 heart-shaped anthers, and a fifth sterile filament smaller than the others. 

 Seeds many, wing-margined. — Smoutii perennials, witii upriglit branching 

 stem.s, opposite serrate leaves, and large white or purple fiowers, which are 

 ne^y sessile in spikes or clusters, aud closely imbricated with round-ovate 

 concave bracts and bractlets. (Name from xsAwi/tj, a tortoise, the corolla re- 

 sembling in shape the head of a reptile.) 



1. C. glabra, L. A foot or two (or even 6-7°) high ; leaves narroicli/ to 

 rather broadl 11 lanceuUite (4-5' long, 4-12" wide), gradually acumiuate, ser- 

 rate with sharp appressed teeth, uarrowed at biise usually into a very short 

 petiole; bracts not ciliate ; corolla ichite, or barely tinyed with rose. — Wet 

 places, Xcwf. to Minn., south to Fla. aud Tex. 



2. C. obliqua, L. Less strict or with spreading branches, 1 -2° high; 

 leaves broadly lanceolate to oblomj (2 - 5' long), sometimes laciniately serrate, 

 more veiny and duller, acute or obtuse at base, mostly short-petioled ; bracts 

 ciliolate ; corolla deep and briyht rose-color. — S. 111. to Va. aud Fla. 



7. PENTSTEMON, Mitchell. Beard-tongue. 



Calyx 5-parted. Corolla tubular and more or less inflated, or bell-shaped, 

 either decidedly or slightly 2-lij)ped ; the upper lip 2-lobed, and the lower 

 3-cleft. Stamens 4, declined at the base, ascending above, and a fifth sterile 

 filament usually as long as the others, either naked or bearded. Seeds numer- 

 ous, wingless. — Perennials, branched from the base, simple above, with op- 

 posite leaves, the upper sessile and mostly clasping. Flowers mostly showy, 

 thyrsoid or racemose-panicled. (Name from irfi/Tf, jire, and aT-nuwu, stamen; 

 the fifth stamen being present and conspicuous, although sterile.) 

 * Viscid or y land alar above, more or less pubescent or ytabrous btluic ; leaves 



often toothed or denticulate. 



■*- Thyrse somewhat open ; leaves ovate-lanceolate to linear ; corolla 9 - 12" long, 



the lower lip usually bearded within. 



1. P. pubescens, Solander. Stem \ -2° high, viscid-puUscent (at least 

 the inflorescence) ; leaves oblong to lanceolate (2-4' long), the lowest aud radi- 

 cal ovate or oblong, usually denticulate ; thyrse narrow ; corolla dull violet or 

 purple (or partly whitish), very moderately dilated, the throat nearly closed by 

 a villous-bearded palate; sterile Jilament densely bearded. — Dry or rocky 

 grounds, S. Maine (Miss Furbish) to Minn., south to Fla. and Tex. 



2. P. ISBVigatUS, Solander. >'>tem 2-4° high, mostly glabrous except the 

 iufioresceuce ; leaves firmer, aomewhut gluisy, the cauline ovate- ur oblong- 



