276 SCROPHULARIACE^E. Mimulus. 



Var. brachypus, Gray, 1. c. Flowers very short-pedicelled, salmon-color, large: 

 calyx viscid-pubescent or villous : herbage often pubescent : leaves linear-lanceolate, 

 mainly entire. — Diplacus longijiorus, Nutt. 1. c. — Prom Santa Barbara southward. 



§ 3. Eumimtjlus, Gray. Herbaceous : proper tube of the corolla mostly 

 included in the plicately carinate-angled 5-toothed calyx (the teeth traversed by 

 the strong nerve) : style glabrous : stigma bilamellar, the lobes or lips ovate or 

 rotund and equal : placentae remaining united in the axis of the capsule (or partly 

 dividing, in M. rubellus completely), from which the thin and usually membra- 

 naceous valves tardily separate. 



# Large-flowered and perennial western species : corolla 1£ to 2 inches long, red or rose-color, 

 with cylindrical body longer than the limb : calyx oblong-prismatic; the short teeth nearly equal : 

 anthers either villous or almost glabrous in the same species: pedicels elongated: capsuleoblong: 

 leaves several-nerved from the base: seeds with a dull, and loose epidermis, longitudinally 

 wrinkled. 



M. cardinalis, Dougl. Villous and viscid, 2 to 4 feet high : leaves ovate, or the lower 

 obovate-lanceolate ; the upper connate ; all erose-dentate : corolla scarlet, with remarkably 

 oblique limb ; upper lip erect and the lobes turned back ; lower reflexed : stamens ex- 

 serted. — Lindl. Hort. Trans, ii. 70, t. 3 ; Brit. Fl. Gard. ser. 2, t. 358 ; Hook. Bot. Mag. 

 t. 3560. — Along watercourses, through Oregon and California to Arizona. 



M. Lewisii, Pursh. More slender, greener, and with minute or finer pubescence : 

 leaves from oblong-ovate to lanceolate, denticulate : corolla rose-red or paler, with tube 

 and throat proportionally longer; roundish lobes all spreading: stamens included. — Fl. 

 ii. 427, t. 20; Gray, 1. c. M. roseus, Dougl. in Bot. Reg. t. 1591 ; Hook. Bot. Mag. t. 3353; 

 Brit. Fl. Gard. ser. 2, t. 210. — Shady and moist or wet ground, Brit. Columbia to Califor- 

 nia along the whole length of the Sierra Nevada, east to Montana and Utah. 



# * Moderately large flowered eastern species, perennial, glabrous : corolla violet, at most an inch 

 long, with narrow tube and throat more or less exceeding the nearly equal calyx, and personate 

 limb : fructiferous calyx oblong : leaves throughout pinnately veined : seeds not wrinkled. 

 ( Corolla rarely varying to white, not very rarely with the lateral lobes of the lower lip exterior 

 in the bud ! ) 



M. ringens, L. Stem square, 2 feet high : leaves oblong or lanceolate, closely sessile by 

 an auriculate partly clasping base, serrate : pedicels longer than the flower : calyx-teeth 

 subulate, slender : seed-coat rather loose, cellular. — Hort. Ups. 176, t. i. ; Lam. 111. t. 523 ; 

 Bot. Mag. t. 283. — Wet places, Canada to Iowa and south to Texas. 



M. alatus, Solander. Stem somewhat wing-angled : leaves ovate to ovate-lanceolate, 

 less acutely serrate, tapering at base into a margined petiole : pedicels shorter than the 

 calyx : teeth of the latter short and broad with abrupt mucronate tips : seed-coat close 

 and smooth. — Ait. Kew. ii. 361 ; Lodd. Bot. Cab. t. 410 ; Bart. Fl. Am. Sept. iii. t. 94. — 

 Wet places, W. New England to Illinois, and south to Texas. 



# # # Small- or moderately large-flowered mainly western species : corolla from yellow or some- 

 times partly white to brown-red or crimson ; the throat broad and open: seeds with a thin and 

 smooth or shining (or in M. luteus duller and reticulate-striate) coat. 



H— Leafy-stemmed, not villous, nor leaves pinnately veined, but with 3 to 7 primary veins from or 

 near the base, and hardly any, or only weak ones, from above the middle' of the midrib. 



++ Calyx oblique at the orifice ; the posterior tooth largest: leaves mostly broad, dentate, at least 

 the lower petioled : root fibrous. 



= Perennial by stolons or creeping branches : upper leaves sessile by a broad or somewhat clasp- 

 ing base : lower lip of the corolla bearded at the throat. 



M. Jamesii, Torr. & Gray. Diffuse and creeping, freely rooting, glabrate : leaves 

 roundish and often reniform, from denticulate to nearly entire (4 to • 12 lines long), all but 

 the uppermost with margined petioles: flowers all axillary and slender-pedicelled : corolla 

 light yellow, 4 to 6 lines long : fructiferous calyx campanulate, about 3 lines long : seeds 

 oval, shining, almost smooth. — Benth. in DC. I.e. 371 (with var. Fremontii); Gray, 

 Man. ed. 2, 287. M. glabratus, Gray in Bot. Mex. Bound. 116, partly, hardly of HBK.— 

 In water or wet places, usually in springs, Illinois to Upper Michigan and Minnesota, west 

 to the Rocky Mountains in Montana, thence south to New Mexico and Arizona. (Adja- 

 cent Mex.) 



