Pentstemon. SCROPHULARIACEzE. 273 



small, ovate, merely mucronate. — P. heterophyllus, Wi\tson, Bot. King, 222. — Canons of 

 the Walisatch Mountains, Utah, viz. of the Prove and American Fork, IVaison, &c. 

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

 higli from a woody hase, 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 ilistinguishable from narrow-leaved forms of the preceding. — Bot. 

 Keg. t. 1809; Hook. & Arn. Bot. Beech. 370; Bot. Mag. t. 385:3; Gray, 1. c — Dry banks, 

 through the western and especially the southern part of California. 



-1— H— -1— Corolla scarlet-red, tubular-funnelform, conspicuously bilabiate, an inch long: sterile 

 tilameiit 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 (l-o-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. 5G0. — Rocky banks. Sierra Nevada, California, from the Yoseniite southward, on Wil- 

 liams Mountain, N. Arizona, and S. W. Colorado (Brandc^ee). 



P. NuTTALLii, Beck in Am. Jour. Sci. xiv. 120, is wholly doubtful, perhaps P. Icevic/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-BARBATUjr and P. ROSTRiFLORUM, Kellogg in Proc. Calif. Acad. ii. 15, Calif ornian 



species, remain wholly obscure. 



12. CHIONOPHILA, Benth. (Xiwr, snow, and qptloc, beloveil, growing 

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

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



C. Jamesii, Benth. I- 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, flrst col- 

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



13. MiMULUS, L. jVIonkey-flowkr. (Latin diminutive of mimiis, a 

 mime, from the grinning coroUa.) — 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 ornameut. — Gray, Bot. Calif, i. 503, & Proc. Am. Acad, 

 xi. 95-, Benth. & Hook. 1. c. Miinulii.s, DIplacas (Nutt.), Eamuius, & Ilerpestis 

 § Afimrdoides, Benth. in DC. Prodr. 



§ 1 . PjUnXnus, 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 {)licate-cai'inate : 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. — Eananus, Benth. in DC. 



18 



