280 SCROPHULABIACE^. (FIGWORT FAMILY.) 



■»- H- Leaves petioled, denticulate or serrate : corolla narrow, light yellow. 



3. M. floribundus, Dougl. About a span high, ^floivering frojn al 

 the loicest axils, the lateral branches diffuselij spreading: leaves ovate and the 

 lower subcordate, an inch long or less ; the upper shorter than the somewhat 

 racemose pedicels : calyx short-campanulate, becoming ovate or oblong and 

 truncate in fruit ; the teeth short and triangular : corolla 3 to 6 lines long : cap- 

 sule globose-ovate, obtuse. — From the mountains of Colorado and Wyoming to 

 California and Oregon. 



4 M. mOSChatUS, Dougl. More villous and viscid, musk-scented: stems 

 spreading and creeping, a foot or so long : leaves oblong-ovate, an inch or two 

 long, mostly exceeding the pedicels : calyx short-prismatic, becoming oblong- 

 campanulate in fruit ; the teeth broadly lanceolate and acuminate : corolla usually 



1 inch long : capsule ovate, acute. — From W. Wyoming to California and Brit- 

 ish Columbia. Known as the " Musk Plant." 



* * Neither viscid nor glandular. 

 t- Corolla rose-red : calyx oblong-prismatic ; the short teeth nearly equal. 

 5. M. Lewisii, Pursh. Slender, 2 to 4 feet high, with minute or fine 

 pubescence : leaves from oblong-ovate to lanceolate, denticulate : corolla 1| to 



2 inches long ; the roundish lobes all spreading : stamens included. — Through- 

 out the Sierra Nevada and extending eastward into Montana and Utah. 



-t- H- Corolla yellow : calyx campanuJate, oblique at the orijice ; the posterior tooth 



6. M. Jamesii, Terr. & Gray. Diffuse and creeping, 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 campanu- 

 late, 3 lines long : seeds shining, almost smooth. — In water or wet places, 

 in the mountains from Arizona to Montana and eastward to Illinois and 

 Michigan. 



7. M. luteus, L. Glabrous or puberulent : stems erect ; the larger forms 

 2 to 4 feet high : leaves ovate, oval-oblong, roundish, or subcordate ; 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: corolla deep yellow, commonly dork-dotted 

 ivithin, and the protuberant base of lower lip blotched with brown-purple or 

 copper-color, sometimes 1 to 2 inches long : calyx ventricose-campanulate, 

 a half-inch or less long : seeds rather dull, longitudinally striate-reticulate. — 

 Throughout the Kocky Mountains and westward. Immensely variable. 



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

 leaves rather distinctly pinnate-veined above the middle. — Proc. Acad. Philad. 

 1863, 71. From the Colorado mountains and California Sierras to Alaska. 



Var. depauperatUS, Gray. Includes reduced or depauperate forms, 2 to 

 10 inches high, with leaves 3 to 6 lines long, fruiting calyx 2 or 3 lines long, 

 and corolla 3 to 7 lines long. — Bot. Calif, i. 567. Rocky Mountains and 

 westward. 



