Pentstemon. SCROPHULARIACE.E. 561 



* * Leaves entire : corolla purple or blue. 



+■ Corolla rather slender, half an inch or so long : sterilt filament commonly a little 



beard"! down one side. 



19. P. gracilentus, Gray. A foot or more high, up to the inflorescence gla- 

 brous : stems slender, few-leaved and with long internodes above, terminating in a 

 1 — e mostly naked and short panicle: leaves lanceolate, or the upper ones linear 

 and tint lowest oblong : slender 2 - 5-flowered peduncles and short pedicels as well 

 as the calyx glandular-pubescent: corolla bright violet-blue, tubular and gradually 

 broadening upwards; the lips (2 lines long) moderately spreading. — Pacif. R Eep. 

 vL 82, & Proc. Am. Acad. vi. 75. 



Shaded ground or banks, through the northern portion of the Sierra Nevada (Xcwbcrry, An- 

 derson, &c.)i and on lit. Shasta above 8,000 feet, B\ 



+- +- Corolla larger and ventricose-di/ated above; the broad lips widely spreading : 

 sterile filament glabrous: flowers racemose-panicled, showy. 



20. P. heterophyllus, Lindl. Glabrous or minutely hoary-puberulent, not 

 glandular, pale, and sometimes glaucous, sending up many virgate leafy stems, 2 to 

 5 feet high from a persistent woody base : leaves lanceolate or linear, or the lowest 

 oblong-lanceolate, the floral diminishing into narrow subulate bracts: peduncles 

 1 — 3-flowered, mostly short and erect : corolla pink or rose-purple, or with shades 

 of violet, fully an inch long, ventricose-funnelform above the narrow rather slender 



. — Bot. Reg. t. 1899 ; Bot. Mag. t. 3853. 



Dry banks of streams, through the western part "f the State, from San Diego to Mendocino 

 1 ■ flu- anthers, as in all the following, are filiate with short and stiff bristles along the line 

 of opening, and otherwise either glabrous or sparsely hirsute underneath. All these are showy 

 species ; and they seem to ran into one another. The calyx is variable. 



21. P. azureus, Benth. Glabrous and glaucous, 1 to 3 feet high : leaves as in 

 the preceding, or inclined to be more lanceolate or with a broader base: corolla 

 similar, but azure-blue or approaching violet, sometimes with red-purple tube, 

 mostly rather broader and larger. — PI. Hartw. 327 : < tray, Proc 1. c. vi. 7">. 



Yar. Jaffrayanus, » iray. A fool high: leaves broader; the lower spatulate- 

 oblong, the upper from oblong-lanceolate to ovate. — P. glaucifolius, Gray in Pacif. 

 R Rep. vi. 82. P. Jaffrayanus, 11", ik. 1 i* >t . Mag. t. 5045. P. heterophyllus, var. 

 lati/olius, Watson, Bot King Exp. 222. 



Common through the interior, from the Sacramento Valley eastward : the variety in the Siena 

 Nevada : also in the Wahsatch Mountains of Utah. 



22. P. laetns, Gray. Cinereous-puberulent or pubescent and above glandular. 

 a foot high: leaves from lanceolate to linear or below to spatulate: panicle more 



open; the peduncles and pedicels often spreading: corolla as of the pre ling or 



smaller, an inch long, blue. — Jour. Bost. Nat. Hist. Soc. viL 147. & Proc. Am. 

 Aj id. \ i. 76. 



Near Los Angeles ( Walla i md Tejon (X ! i)tofhi - mite Valley, 



23. P. Roezli, Regel. Smaller, a sp r so high, below glabrous or 

 minutely puberulent, above (at least the inflorescence) glandular-pubescent : 1 



all lau late or linear (an inch or more long) : panicle open and often compound ; 



the few-flowered or loosely several-flowered peduncles and the pedicels commonly 

 diverging : corolla from half to two thirds of an inch long, bluish or pale violet. — 

 Regel in Pro,.. St. Petersb. Bot. Card. ii. 326. P. heterophyllus, t it. & 



Gray in Pacif. R Rep. ii. 122. 



Higher Sierra Nevada, in Nevada and Sien Also W 



Volley, Nevada, St Resembles a reduced form "t /'. Icctus, but more glabrous, and the 



Rowers much smaller. Regel finds occasionally sum. scattered hairs on the sterile filament : we 

 Ii it ■ I none. 



