Mimulus. SCROPHULARIACEJE. 567 



* % Small' -r-fimivrcd or smn/l-jloin ,•<</, but the yd lam (sometimes copper// or reddish) 

 corolla often a fall inch or more long in M. lute us : seeds, except in llie first species, 



/villi smooth n ml thin polished runt. 



-f- Leafy-stemmed, glabrous, or merely pubescent or glandular. 



++ Calyx oblique at t/ie orifice, especially in fruit; the upper tooth largest: leaves 



mostly broad and thin, at least the lower very distinctly or abruptly pdialcd, all 

 3 — several-nerved at base. 



14. M. luteus, Linn. Erect or diffuse, from a fibrous annual root, and coni- 

 monly perennial by short stolons, glabrous or merely puberulent ; the ordinary 

 erect form a foot or two or even 3 or 4 feel high : leaves ovate, oval or roundish, 

 sometime:- cordate, several-nerved from base and ne, ii n. sharplj and irregularly 

 dentate, or the lower occasionally lyrate-laciniate ; the upper sessile ; the fioral 

 becoming small and bract-like, often connate : peduncles becoming racemose, equal- 

 ling or shorter than the flower: calyx becoming ovate-inflated in fruit and the 

 upper tooth conspicuously largest: corolla from 1] to f of an inch long, yellow, 

 often .lotted within and sometimes blotched with brown-red or purple. — Bot. Mag. 

 t. 1.501, 3363; Bot. Reg. t. 1030, 1796; Andr. Bot. Rep. t. 661. M. guttatius, 

 DC. ; Hook. Fl. ii 99. M. mriegatus, Lodd. Bot. Cab. t. 1575. M. rivularis, 

 Lo.1,1. Bot. Cab. t. 1525 ; Nutt. in Jour. Acad. Philad. vii. 47. M. lyratus, Benth. 

 Scroph. 1ml. 1. c, a state with lower leaves lyrately laciniateat base. M. Scouleri, 

 Hook. 1. e., a narrow-leaved form. M. glabralus, III: Is.. (!) M. Roezli, Hegel. — Runs 

 through numerous and very various forms. The following are dwarf or depauperate 

 varieties. 



Var. alpinus, Gray. A span or less high, equably leafy to the top : leaves half 

 an inch to an inch long, ovate or oval, denticulate or some of them entire : stems 1—4- 

 fiowered: corolla proportionally large (an inch or less long). — Proc. Acad. Philad. 

 L863, 71; Watson, Bot. King Exp. 224. M. TUingii, Regel, Gartenfl. 1869, t. 

 631, — the same plants the second year developing into the ordinary condition of 

 the species, and figured 1>\ level, 1. e. L870, 290, t. 665. M. cupreus, Veitch, in 

 Card. Chrin. 1S64, 2; Kegel, 1. c. 186£, t. 422 (.V. luteus, var. cuprea, Hook. f. 

 But. M;i'.', 1. . r )47S), — a form with the corolla turning orange or copper-red. 



Var. depauperatus, Gray. Slender, mostly smooth, ami with sharply-toothed 

 or laciniate leaves (from a fourth to half an inch long), slender petioles, and filiform 

 peduncles twice or thrice the Length of the small flowers: corolla only a third or 

 halt' an inch long: some forms much approaching M. alsinoides ; bul the calyx is 

 thai of .1/. luteus, except in size. M. microphallus, Benth. in DC. 1. c. M. tenel- 

 Ins, Nutt. herb., not of Bui 



Moist or wet grounds, very conlmon, extending north to the Alaskan Islands, east to the 



Rocky Mountains, and south along the Andes to il Ktremity of Chili. The var, alpinus in 



the Siena Nevada, .v<-. The var. depauperatus consists of reduced forms, flowering as tiny or 

 -l' n't' i annnols, in < Iregon and I 'alifornio. 



M. destatus, Nutt., From the woods of Oregon, if a variety of this species is a peculiar one, 



growing in much Bhade. The plant s unci in the Botan] of Whipples Expedition (Pacif. R. 



Rep. iv. 64) is a smaller-flowered and depauperate form of M. luteus. 



ML ilsin a, Dough, of I Iregon and British Colombia, resembles the last i irietj ol If, ' 



but is known by the narrower calyx, in fruit oblong (8 or I lines long), and the teeth very -lent ; 

 also by the filiform at length divaricate peduncles, of an im h or more in Ii n| 111, , all of 



them longer than the oval 'roundish leaves, these all petioled. The In a feet 



high, aii'l dilfusel] much branched, with narrow c lis naif an inch long.- The unallest (var. 



minimus, Benth.) ire minute, with coroll dj 2 lines long, 



15. M. laciniatus, Gray. Annual, glabrous, small and very slender, a span or 

 less in height, diffuse: cauline leaves oblong or Bpatulntc, mostly laciniately few- 

 toothed or lobed, sometimes hastate, I nerved, a quarter to half an inch long and 

 with filiform petiole of equal or greater Length: peduncle aboul the length of the 



