556 SCROPHULARIACE^E. Pentstemon. 



most a line and a half long : corolla a little longer than the calyx ; its 5 lobes of 

 equal length, but the anterior one transversely oval or roundish, very much larger 

 than the lateral and posterior oblong ones, and separated from them by deeper 

 sinuses : ovules solitary in each cell : capsule considerably exceeding the calyx. — 

 Collinsia tenella, Benth. in DC. Prodr. 1. c. 



Mendocino Co., near Ukiah, in shady ground (Kellogg, Bolander) ; also in Oregon, where it was 

 first collected by Nuttall and later by E. Hall. 



T. floribunda, Gray, the other species, has been collected only in Idaho, on the Koos- 

 kooskie River, by Spalding, Geyer, &c. It is much larger, a foot or two high ; the stems termi- 

 nating in a rather crowded raceme of whorls, each of 3 to 6 comparatively showy flowers ; the open 

 (purple) corolla over a quarter of an inch in diameter and thrice the length of the calyx ; the 

 three lobes answering to the lower lip obovate and nearly alike, smaller than those of the 2-cleft 

 upper lip ; the ovules and seeds 3 or 4 in each cell. 



8. PENTSTEMON, Mitchell. 



Calyx 5-parted. Corolla with a conspicuous and mostly elongated or ventricose 

 tube ; the throat gibbous on the lower if on either side ; the limb more or less 

 bilabiate; upper lip 2-lobed ; the lower 3-cleft, recurved or spreading. Stamens 4, 

 declined at base, ascending above ; the fifth (posterior) stamen represented by a 

 conspicuous sterile filament : anthers with their cells mostly united or confluent at 

 the summit. Style long : stigma entire. Capsule ovate, septicidal, many-seeded. 

 Seeds angled, wingless. — Perennial herbs, or. a few shrubby ; with opposite (rarely 

 verticillate) leaves, the upper sessile or partly clasping, the floral gradually or 

 abruptly reduced to bracts. Flowers (appearing in summer) commonly showy 

 and racemose-panicled, the peduncle from the axil of the floral leaves or bracts 

 generally 2-bracteolate when single-flowered, oftener cymosely few-several-flowered. 

 Corolla red, blue, purple, or white, larely yellow. ■ — Gray, Proc. Am. Acad. vi. 

 56 ; Watson, Bot. King Exp. 456. 



A well-marked gemis of nearly 70 species, all North American with a few Mexican, much more 

 numerous in the Pacific than the Atlantic States, most so in the intermediate region. Several 

 are common in ornamental cultivation. In a few instances the rudimentary stamen has been 

 found to be antheriferous. 



Cbeloxe kemokosa, Dougl., a native of the woods of Oregon, has been met with in the Cas- 

 cade Mountains about 200 miles north of the California line. It would be taken for a Pentstemon 

 except for the seeds, which are broadly winged. 



§ 1. Anthers with cells at length diverging or divaricate, so as to become transverse, 



and opening for their ivhole length. 



* Anthers long-woolly : stems sitffrutescent. 



1. P. Menziesii, Hook. Branching and tufted at the woody base, a span to a 

 foot high, nearly glabrous ; the flowering shoots erect : leaves coriaceous, oval or 

 oblong, mostly beset with some small rigid teeth, an inch or less in length : pedun- 

 cles almost always 1-flowered, and forming a short somewhat glandular raceme : 

 corolla about an inch long, pink-red ; the narrow but gradually expanding tube and 

 throat much longer than the lips. — Gerardia fruticosa, Pursh, PI. ii. 423, t. 18. 

 P. Newberryi, Gray, in Pacif. P. Pep. vi. 82, t. 14, the var. Newberryi, Gray, 

 Proc. 1. c. 



On rocks, through the Sierra Nevada at 5,000 to 12,000 feet ; thence north to British Columbia 

 and the northern Rocky Mountains. Showy in blossom, running into several varieties ; the Cali- 

 fornian form apparently always with pink or rose-red corollas. 



* * Anthers glabrous, or sometimes with a few scattered beard-like hairs. 



+- Stems woody, at least the base : leaves somewhat coriaceous or chartaceous, small, 



mostly very short-petioled : filaments all bearded at base. 



