Pentstemon. SCROPHULARIACE^. 273 



small, ovate, merely mucronate. — P. heterophyllus, "Watson, Bot. King, 222. — Canons of 

 the Wahsatch Mountains, Utah, viz. of the Provo and American Fork, Watson, &c. 

 P. heterophyllus, Lindl. Green, seldom glaucescent : stems or branches 2 to 5 feet 

 high from a woody base, slender : leaves lanceolate or linear, or only the lowest oblong- 

 lanceolate, mostly narrowed at base : corolla an inch or sometimes more in length, with 

 narrow tube rose-purple or pink, sometimes changing toward violet ; the bud often yellow- 

 ish : otherwise hardly distinguishable from narrow-leaved forms of the preceding. — Bot. 

 Reg. t. 1899; Hook. & Arn. Bot. Beech. 376; Bot. Mag. t. 3853; Gray, 1. c — Dry banks, 

 through the western and especially the southern part of California. 



•I— -t— -t— Corolla scarlet-red, tubular-f unnelfonn, conspicuously bilabiate, an inch long : sterile 

 filament glabrous. 



P. Bridgesii, Gray. A foot or two high from a lignescent base, glabrous up to the vir- 

 gate secund thyrsus, or pruinose-puberulent : leaves from spatulate-lanceolate to hnear; 

 the floral reduced to small subulate bracts: i>eduncles (1-5-flowered) and pedicels short: 

 these and the ovate or oblong sepals glandular-viscid : lips of the narrow corolla fully one- 

 third the length of the tubular portion ; the upper erect and 2-lobed ; the lower o-parted 

 and its lobes recurved: anthers deeply sagittate. — Proc. Am. Acad. vii. 379, & Bot. Calif. 

 i. 500. — Rocky banks, Sierra Nevada, California, from the Yosemite southward, on Wil- 

 liams Mountain, N. Arizona, and S. W. Colorado {Bra7idegee). 



P. NuTTALLii, Beck in Am. Jour. Sci. xiv. 120, is wholly doubtful, perhaps P. Icerir/atus. 

 P. Cerrosensis, Kellogg in Proc. Calif. Acad. ii. 19,^rom Cerros Island, off the coast of 



Lower California, is said to have a tubular yellow corolla, 3-nerved sepals, &c. Probably 



not of this genus. 



P. CANOSO-BAEBATUM and P. RosTRiFLOEDM, Kellogg in Proc. Calif. Acad. ii. 1-5, Californian 



species, remain wholly obscure. 



12. CHIONOPHILA, Bentli. (Xrcoj', snow, and (fHog, beloved, growing 

 on snow-capped mountains.) — DC. Prodr. x. 351 ; Benth. & Hook. Gen. PI. 

 ii. 942. — Single species : fl. summer. 



C. Jamesii, Benth. 1. c. Dwarf perennial, glabrous or nearly so : leaves thickish, entire, 

 mostly radical in a tuft, spatulate or lanceolate, tapering into a scarious sheathing base ; 

 those on the scape-like (1 to 3 inches high) flowering stems one or two pairs, or occasionally 

 alternate, linear : spike few-many-flowered, dense, mostly secund, imbricate-bracteate : 

 bracts shorter than the flowers : corolla over half inch long, dull cream-color, in anthesis 

 twice the length of the calyx, at length more nearly enclosed by it. — Gray in Am. Jour. 

 Sci. ser. 2, xxxiii. 252. — Colorado Rocky Mountains, in the high alpine region, first col- 

 lected by Dr. James, in Long's Expedition, on James', now Pike's Peak. 



13. MfMULUS, L. MoxKEY-FLOAVER. (Latin diminutive of mimits, a 

 mime, from the grinning corolla.) — Large genus, of wide dispersion, but far mo^^t 

 largely N. American ; with opposite simple leaves, and usually showy flowers 

 from the axils, or becoming racemose by the diminution of the upper leaves to 

 bracts. Chiefly herbs, one polymorphous species shrubby; fl. in summer; sev- 

 eral cultivated for ornament. — Gray, Bot. Calif, i. 563, & Proc. Am. Acad, 

 xi. 95 ; Benth. & Ilook. 1. c. Mimulus, Diplacus (Nutt.), JSunanus, & Herpestis 

 § Mimidoides, Benth. in DC. Prodr. 



§ 1 . E UN ANUS, Gray. Annuals, mostly very low, glandular-pubescent or viscid : 

 flowers sessile or short-pedicelled : calyx 5-angled and 5-toothed ; the angles and 

 teeth more or less plicate-carinate : corolhi in the typical species with long and 

 slender tube : anthers approximate in pairs, forming crosses : upper part of style 

 pubescent or glandular : stigma variable, not rarely f unnelform or peltate-petaloid : 

 placentfe separated in dehiscence and borne by the half-dissepiment on the middle 

 of each valve. — Eunanus, Benth. in DC. 



18 



