Mimulun. SCROPHULARIACE.E. 277 



Var. Texensis. Larger : leaves more ovate, seldom subcordate, usually more strongly 

 or even laciniately dentate ; the uppermost sometimes reduced, so that the later flowers 

 become somewhat racemose. M. ylabratus, Bot. Mex. Bovyid. 1. c., mainly. Texas, 

 Wright, Lindheimer, &c. Probably in drier soil : near M. ylabratus, of S. Am. and Mex. 

 M. luteus, L. Glabrous or puberulcnt : stems erect, ascending or with later branches 

 spreading; the larger forms 2 to 4 feet high : leaves ovate, oval-oblong, roundish, or sub- 

 cordate ; the upper cauline and floral smaller, closely sessile, not rarely connate-clasping ; 

 all usually acutely dentate or denticulate ; lower sometimes lyrately laciniate : inflores- 

 cence chiefly racemose or terminal: pedicels equalling or shorter than the flower: corolla 

 deep yellow, commonly dark-dotted within, and the protuberant base of lower lip blotched 

 with brown-purple or copper-color, in the largest forms from 1 to 2 inches long : calyx ven- 

 tricose-campanulate, half inch or less long: seeds oblong, rather dull, striate-reticulated 

 longitudinally. Spec. ed. 2, 884; Bot. Mag. t, 1501, 3363; Bot. Reg. t. 1030, 1796; Andr. 

 Bot. Kep. t. 661 ; Gray, 1. c. M. guttatus, DC. Cat. Monsp. 127 ; Hook. Fl. ii. 99. M. 

 variegatus, Lodd. Bot. Cab. t. 1872. M. rivularis, Lodd. 1. c. t. 1575 ; Nutt. in Jour. Acacl. 

 Philad. vii. 47. M. lyratus, Benth. Scroph. Ind. 28, form with lower leaves laciniate at 

 base. M. Scouleri, Hook. Fl. ii. 100 ; a narrow-leaved form. M. Smitltii, Lindl. Bot. Reg. 

 t. 1674. Moist or wet ground, Aleutian Islands and Alaska to California, and east to and 

 through the Rocky Mountains. (Along the Andes, &c., to S. Chili.) Most variable and 

 polymorphous : extreme forms are the following 



Var. alpinus, Gray. A span or so high, lax, leafy to top: stem 1-4-flowered: 

 corolla to 1 inches long : seeds oval : some leaves rather distinctly pinnate-veined above 

 the middle! Proc. Acad. Philad. 1863, 71; Watson, Bot. King, 224; Gray, Bot. Calif. 

 i. 567. M. dentatus, Nutt. in DC. Prodr. 1. c. 372, appears from an original specimen to be 

 between this and M. moschatus, var. lonyijlorus. M. Tilingii, Regel, Gartenfl. 1869,321, t. 631; 

 plant which developed next year into a large many-flowered form, as figured in Gartenfl. 

 1870, 290, t. 665 (corolla distinctly personate by a palatine protuberance of base of lower 

 lip, as is often seen in other forms). M. cupre/is, Regel, 1. c. 1864, t. 422 (throat of the 

 corolla wide open). M. lutens, var. cuprea, Hook. Bot. Mag. t. 5478. Alaska to high 

 Sierra Nevada, California, and Colorado Rocky Mountains. (Chilian Andes.) 



Var. depauperatus, Gray. Includes reduced or depauperate forms, flowering as 

 slender annuals, 2 to 10 inches high, with leaves 3 to 6 lines long, fructiferous calyx 2 or 3 

 lines long, and corolla 3 to 7 lines long. Bot. Calif. 1. c. Af. microphi/Ilas, Benth. in DC. 

 1. c. 371. Washington Terr, to California and the Rocky Mountains. 



= = Apparently only annual : leaves all petiolcd : pedicels long and filiform. 

 M. alsinoides, Benth. Very glabrous : stems slender, at length diffusely branched, 3 

 to 12 inches long : leaves from rotund- to rhombic-ovate (from 4 to 16 lines long, besides 

 the abruptly long-attenuate base or margined petiole), thin, the upper part salient denticu- 

 late : pedicels at length divaricate : corolla light yellow (or lower lip with a brown spot), 

 3 to 6 lines long ; the limb small : calyx in flower narrow-cylindraceous, in fruit narrow- 

 oblong; its teeth all very short. Benth. 1. c. ; Gray, 1. c. Wet shady places, Oregon 

 to British Columbia, &c. 



Var. minimus, Benth. 1. c., consists of very small and depauperate forms, half 

 inch to 2 inches high, with corolla 2 to 4 lines long. Same range. 



M. laciniatus, Gray, 1. c. Glabrous or slightly pubescent: filiform stem diffusely 

 branched, a span or less high : leaves on filiform petioles, which mostly exceed the (quarter 

 to half inch long) hastately 3-lobed or laciniately 3-5-cleft and obscurely 1-nerved blade, 

 about equalling the pedicels : corolla yellow, 2 lines long : calyx in fruit ovate, 2 lines 

 long: the teeth rather conspicuous. Sierra Nevada, California, on a branch of the 

 Merced at Clark's. 



H- +H- Calyx equal or nearly so at the orifice, and the teeth almost alike : root annual. 



= Cauline leaves contracted at base into margined petioles. 



M. PulsiferSB, Gray, 1. c. Viscid throughout, but hardly pubescent, a span high, loosely 

 branching : leaves from broadly ovate to lanceolate-oblong, sparsely denticulate or entire, 

 3-nerved at base (half inch or more long), equalled or surpassed by the pedicels : corolla 

 yellow, 5 lines long : calyx cylindraceous-campanulate, in fruit 3 or 4 lines long, with short 

 ovate-triangular teeth. California, in the northern part of the Sierra Nevada, on rocks, 

 from Sierra Co. to Siskiyou Co., Bolander, Mrs. Pulsifer-Ames, Greene. 



