Pentstemon. SCROPHULARIACE.E. 273 



small, ovate, merely mucronate. P. hcterophyllus, 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. & Am. Bot. Beech. 376; Bot. Mag. t. 3853; Gray, 1. c. Dry banks, 

 through the western and especially the southern part of California. 



-H- H 1 .Corolla scarlet-red, tubular-funnelform, conspicuously bilabiate, an iuch 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 linear; 

 the floral reduced to small subulate bracts: peduncles (1-5-rlowered) 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 3-parted 

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

 i. 5(30. _ Rocky banks, Sierra Nevada, California, from the Yosemite southward, on Wil- 

 liams Mountain, N. Arizona, and S. W. Colorado (Brandegee). 



P. NUTTALLII, Beck in Am. Jour. Sci. xiv. 120, is wholly doubtful, perhaps P. Iwirjatus. 

 P. CERROSENSIS, Kellogg in Proc. Calif. Acad ii. 19, .from 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-BARBATUM and P. ROSTRiFLORUM, Kellogg in Proc. Calif. Acad. ii. 15, Californian 



species, remain wholly obscure. 



12. CHION6PHILA, Benth. (Xuav, snow, and qptlfv, beloved, growing 

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

 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. MiMULUS, L. MONKEY-FLOWER. (Latin diminutive of mimus, a 

 mime, from the grinning corolla.) Large genus, of wide dispersion, but far most 

 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. 5G3, & Proc. Am. Acad. 

 xi. 95 ; Beuth. & Hook. 1. c. Mimulus, Diplacus (Nutt.), Eunanus, & Herpestis 

 Mimuloides, Benth. in DC. Prodr. 



1 . EUNANUS, 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 : corolla 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 funnelform or peltate-petaloid : 

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



of each valve. Eunanus, Benth. in DC. 



18 



