Dicotyledones. 103 



SCROPHULARIACE^E. FIGWORT FAMILY. 



Mostly herbs. Flowers with a 2-lipped or otherwise irregular gamo- 

 petalous corolla and 2, 4, or 5, often didynamous stamens inserted on the 

 corolla tube. Calyx generally 4~5-toothed or cleft. Ovary superior, 

 2-celled, entire or sometimes 2-lobed, ovules several to many on axillary 

 placentae. Style simple and slender, entire or 2-lobed. 



I. PENTSTEMON. Beardtongue. 



(Gr.,jpente, five, stemon, stamen, the fifth stamen being present, though sterile.) 



Perennial herbs, branching from the base, with leaves usually oppo- 

 site or verticillate, the upper sessile and often clasping. Flowers showy, 

 white, purplish, or red, racemose or paniculate. Calyx 5-parted. 

 Corolla mostly tubular-inflated, 2-lipped, the upper lip 2-lobed, under 

 lip 3-lobed. Stamens 5, 4 anther-bearing and didynamous, and i sterile, 

 either naked or bearded. Style filiform and stigma terminal. Capsule 

 oblong to globose, containing many seeds. 



1. Pentstemon pubescens, Soland. (L., pubescens, hairy.) HAIRY BEARD- 

 TONGUE. Stems slender and pubescent, I to 3 feet high. Leaves varying from 

 ovate and petioled below to lanceolate and sessile above. Inflorescence loose, 

 glandular-pubescent. Beard at the base of the lower lip nearly closing the throat 

 of the purplish to whitish corolla. Sterile filament bearded for about half its length. 

 In dry woods or rocky grounds. 



2. Pentstemon Digitalis, Nutt. (L., digitalis, finger-shaped.) FOXGLOVE 

 BEARDTONGUE. Stem 2 to 5 feet high. Glabrous below, but inflorescence glandu- 

 lar-pubescent. Lower leaves oblong-oval, narrowing below. Upper leaves ovate- 

 lanceolate to lanceolate, sessile, and somewhat clasping. Corolla white, slightly 

 2-lipped, open in the throat, i inch or more long. Upper part of sterile filament 

 bearded. In fields and thickets. 



3. Pentstemon gracilis, Nutt. (L., gracilis, slender.) SLENDER BEARD- 

 TONGUE. 6 to 18 inches tall, glabrous below, but the lax inflorescence glandular- 

 pubescent. Lower leaves linear-oblong to spatula te. Upper leaves mostly 

 linear-lanceolate. Corolla purple or whitish, \ to i inch long, tubular-funnel-form, 

 open in the throat. Sterile filament bearded above for about of its length. On 

 moist prairies. 



4. Pentstemon Cobaea, Nutt. (From proper name, Cob6, a Spanish botanist.) 

 COB^A BEARDTONGUE. Stems stout, i to 2 feet high, soft-pubescent beneath 

 and glandular-pubescent above. Leaves ovate to oblong-ovate or ovate-lanceolate, 

 often sharply dentate, the upper clasping. Corolla sometimes 2 inches long, much 

 inflated above the middle, whitish or purplish, its lobes. about equal, rounded and 

 spreading. Sterile filament bearded. On dry prairies. 



