* 



562 SCROPHULARIACE^E. Pentstemon. 



* * * Leaves all or some of them sharply serrate or laciniate : corolla purple or 

 mostly violet, with ample ventricose-inflated throat ; ike upper lip somewhat and the 

 lower more widely spreading ; the lobes short and roundish. 



24. P. triphyllus, Dougl. A foot or two high, nearly glabrous : stems slender, 

 paniculately branched, leafy : leaves lanceolate or linear, sharply toothed or laciniate- 

 pinnatifid, about an inch long, many of the middle ones in whorls of three or four, 

 and of the uppermost alternate : peduncles 1 - 3-flowered in a simple or compound 

 loose and sometimes leafy panicle : corolla fully half an inch long, less enlarged in 

 the throat than the following : sterile filament densely bearded at the tip. Lindl. 

 Bot. Eeg. t. 1245. 



Not rare in Oregon and Washington Territory ; said in the Botanical Register to have been 

 found by Douglas in Northern California also. 



25. P. Richardsonii, Dougl. Like the preceding, but more branched and 

 diffuse, 2 feet or more high : leaves ovate-lanceolate or narrow, acute, laciniate- 

 toothed or pinnatifid, an inch or two long, opposite or on the branchlets alternate : 

 panicle loose and irregular, glandular : corolla an inch long, much enlarged at the 

 throat, violet : sterile filament slightly bearded at the tip. Lindl. Bot. Reg. t. 

 1121 ; Hook. Bot. Mag. t. 3391. 



Northern part of the State, Kellogg & Harford. Thence through Oregon to Washington Terr. 

 The three following Oregon species have not been detected in California, but are so likely to 

 occur that their names and main distinctions are appended. 



P. DIFFITSUS, Dougl. Glabrous or merely puberulent above, 2 or 3 feet high ; the ascending 

 stems simple or branching at the summit : leaves ovate or ovate-lanceolate, coarsely or finely ser- 

 rate, the upper slightly cordate and clasping at base : panicle rather leafy ; peduncles and pedicels 

 rather short : corolla over half an inch long, light purple : sterile filament bearded at the tip. 

 Lindl. Bot. Reg. t. 1132 ; Hook. Bot. Mag. t. 3645. In aspect most like P. ovalus. 



P. VENUSTUS, Dougl. Glabrous throughout: stems strict and simple, erect, very leafy: leaves 

 narrower than in P. diffusus, of firmer texture, mostly oblong-lanceolate, beset with close sharp 

 teeth : panicle narrow or thyrsiform, itSually naked : corolla usually more than an inch long, 

 violet-purple ; the lobes ciliate. Lindl. Bot. Reg. t. 1309. 



P. GLANDULOSFS, Dougl. , is a rather large-leaved and large-flowered species, probably growing 

 in shade, clothed with a short and soft-downy more or less glandular pubescence : leaves thin, 

 ovate or ovate-lanceolate, moderately serrate ; the upper cordate-clasping, acuminate, often nearly 

 entire ; the floral ones mostly longer than the short peduncles in their axils : pedicels very short : 

 corolla pale violet, fully an inch long, much broadened above : sterile filame:it glabrous. 



P. CANOSO-BARBATUM, Kellogg in Proc. Calif. Acad. ii. 15, described from a specimen col- 

 lected in the Sierra Nevada by Mr. Hutchings, said to have "scarlet or red" peduncles, a 

 ' ' colored " corolla with ' ' lower lip slightly 2-notched, carinate, densely bearded below, mostly at 

 the extremity, with white or long transparent frosted hairs," is a complete puzzle. As the 

 tube of the corolla is said to be "short, like that of P. brcviflorus," it may belong to that 

 species. 



P. ROSTRIFLOIUTM, Kellogg, 1. c., from the same source, said to have linear-lanceolate leaves, 

 narrow creamy-yellow corolla, with linear and acute lobes to the lower lip, is wholly confound- 

 ing in its characters. 



9. MIMULUS, Linn. MONKEY-FLOWER. 



Calyx tubular-prismatic or campanulate, mostly plicately 5-angled, 5-toothed, 

 rarely 5-cleft, often oblique. Corolla funnelform, with included or rarely prolonged 

 and exserted tube, bilabiately 5-lobed ; the upper lip 2- and the lower 3-lobed or 

 parted ; the lobes plane or roundish, more or less spreading or those of the upper 

 lip turned back; a pair of palatine ridges (either bearded or naked, and more or 

 less intruded) running down the lower side of the throat. Stamens 4 : the anthers 

 oftener approximate in pairs, their cells divergent. Style filiform : stigma bilamellar, 

 with the lips or lobes commonly petaloid-dilated, or more or less entire and peltate- 

 funnelform. Capsule loculicidally 2-valved, the placentae either remaining united in 



