FIGWORT FAMILY. 



401 



7. PENTSTEMON Mitch. 

 Perennial herbs or suffrutescent plants. Leaves opposite, the 

 upper sessile. Flowers mostly showy, in racemes, panicles, or 

 cymes. Calyx 5-parted. Corolla tubular and often inflated, the 

 limb either slightly or strongly bilabiate; upper lip 2-lobed, the 

 lower 3-cleft. Stamens with anthers 4, declined at base, ascending 

 above; fifth stamen represented by a conspicuous sterile filament 

 which is often dilated or bearded. Capsule septicidal (the valves 

 cleft at apex through the persistent base of the style), many-seeded. 

 Seeds angled. (Greek pente, five, and stemon, stamen.) 



Anthers densely woolly; corolla red: var. Sonomensis of.l. P. Newberryi. 

 Anthers glabrous. 

 Sterile filament bearded. 

 Corolla scarlet, 1 in. long; sterile filament bearded its whole length . . . 



2. P. corymbosus. 



Corolla purplish and yellowish, % in - long; sterile filament bearded at 



apex only 3. P. Limmuni. 



Sterile filament naked. 



Corolla bright vermilion, tubuhir-cylindric 4. P. centranthifolius. 



Corolla blue or purple, tubular at base, ventricose-funnelform above. . . 



5. P. futtrophyllus. 



1. P. Newberryi Gray var. Sonomensis. Stems 8 to 12 in. 

 high from a woody base; leaves coriaceous, orbicular to round-ovate, 

 about 7 lines long, serrulate, rarely inclined to be entire; racemes 

 sessile; sepals narrowly lanceolate; corolla bright red, 1 to 1£ in. 

 long, with nearly equal and not widely spreading segments; lower 

 lip with two densely bearded folds; anthers slightly exserted, densely 

 woolly; sterile filament bearded at apex. — (P. Sonomensis Greene, 

 Pitt. ii. 218, where the leaves are described as obcordate.) 



Among rocks of the North Coast Ranges: Hood's Peak; Mt. St. 

 Helena. May. The species is found in the High Sierras. 



2. P. corymbosus Benth. Suffrutescent, 12 to 16* in. high, 

 glabrous except the glandular-pubescent inflorescence; leaves oblong, 

 acute at both ends, \ to \\ in. long, denticulate or entire, short- 

 petioled; flowers in terminal corymbs; sepals linear or somewhat 

 narrowed above; corolla tubular, 1 in. long, scarlet, bilabiate; lower 

 lip abruptly spreading, 3-parted. into oblong lobes; upper erect, 

 2-cleft; filaments all pubescent at the very base, the sterile one 

 bearded its whole length on one side. 



Rocky ledges and cliffs of the higher Coast Kanges: Mt. Hamilton; 

 Mt. Diablo; Santa Cruz, ace. to Gray, and northward to Mt. Shasta. 

 July- Aug. 



3. P. Lemmoni Gray. Bush Beard's-tongue. Of erect bushy 

 habit, 2 to 4 ft. high, with vigorous herbaceous stems from a woody 

 base, rather remotely leaved; leaves light green, ovate, or ovate- 

 lanceolate, acute, 1£ in. long or less, sparsely serrulate; sepals nar- 

 rowly ovate, acuminate; corolla purplish and dull yellow, small 

 (£ in. long), with short tube, campanulate dilated throat and spread- 

 ing lips; sterile filament strongly bearded on one side of the curved 

 apex; capsule 2 lines long. 



