Pentstemon. 



SCROPHULARIACEyE. 



35 



6. PENTSTEMON. VHerit.; Schreb.gen.pl 1758; Endl. gen. 3909. PENTSTEMON. 

 [ From the Greek, pentc, five, and stemon, a stamen ; the fifth or abortive stamen being large.] 



Calyx deeply 5-parted, or of 5 sepals. Corolla 2-lipped, ventricose. The fifth or sterile 

 filament longer than the fertile, and bearded on the upper side. Anthers smooth. Capsule 

 2-celled, 2-valved. Seeds angular. — Perennial or rarely suffruticose herbs, with opposite 

 leaves and paniculate (mostly purplish) flowers. 



1. Pentstemon pubescens, Willd. Pubescent Pentstemon. 



Stem pubescent; leaves lanceolate-oblong, repandly serrulate or serrate, sessile and clasping; 

 sterile filament bearded from the summit to below the middle. — Willd. sp. 3. p. 227 ; Miclix. 

 fl. 2. p. 21 ; Pursh, jl. 2. p. 428 ; Nutt. gen. 2. p. 52 ; Ell. sk. 2. p. 129 ; Bart. jl. N. Am. 

 t. 103 ; Beck, hot. p. 266 ; Darlingt. jl. Cest. p. 369 ; Hook. Jl. Bor.-Am. 2. p. 97. 



Stem 12-15 inches high, obtusely quadrangular, simple or branching from the base. 

 Leaves nearly smooth, 2-5 inches long and 4-6 lines wide : radical ones longer and at- 

 tenuated at the base, often nearly entire ; those of the stem sessile , the uppermost broader. 

 Flowers in a loose trichotomous panicle. Sepals ovate-lanceolate, acuminate, pubescent. 

 Corolla about an inch long, pubescent, tapering below : upper lip 2-lobed, compressed ; lower 

 3-cleft, plaited, hairy inside. Stamens smooth: anther-lobes divaricate: sterile filament 

 without an anther, beautifully plumose. Style about the length of the stamens : stigma small. 

 Capsule ovoid, smooth. 



Hills and borders of woods ; north and west of Catskill. June - July. 



Tribe IV. GRATIOLEJE. Benth. 



Corolla nearly equal, or 2-lipped ; the lobes Jlattish. Fertile stamens 2 or 4 : anthers 2- 

 celled, pointless. Capsule 2-celled ; the dissepiment placentiferous, at length free. 

 Seeds ivingless. 



7. MIMULUS. Linn.; Endl. gen. 3935. MONKEY-FLOWER. 



[ So named from the Greek, mimo, a monkey ; in allusion to its grinning flowers.] 



Calyx tubular, prismatic, 5-toothed. Corolla ringent ; the upper lip reflexed at the sides : 

 lower lip 3-cleft, with the palate prominent. Stigma thick, 2-cleft. Capsule 2-celled, 

 many-seeded. Seeds minute. — Perennial or annual herbaceous plants, with quadrangular 

 stems and opposite leaves. Flowers axillary and solitary, without bracts, mostly violet or 

 yellow. 



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