SCROPHULARIACE.E. 447 



Var. longiflorus, GRAY. A form growing in drier soil, less viscid-villoiis, and with 

 elongated corolla. M, moniliformis, in part (the villous- and more or less viscous- 

 pubescent plant), Greene, Bull. Calif. Acad. i. 119. Common especially in the Sierra 

 Nevada. 



Var. sessilifolius. Leaves all sessile on upright or ascending stems (these some- 

 times a foot or two high, very slimy), hut those on decumbent shoots from the rootstocks 

 of the same plant not rarely well-petioled. M. inodorus, Greene, 1. c., but the plant as 

 strongly musk-scented as the ordinary species, at least in some cases. Not rare in wet 

 places, from San Bernardino Co., California, northward, and passing into the ordinary form 

 in Oregon. Calyx-teeth in all the forms variable in length and width. 



H 1 ( Leafy-stemmed and slender, perennial by filiform rootstocks, scentless, the minute 



pubescence (if any) not viscous: leaves essentially pinnately veined, the peduncles seldom sur- 

 passing them : calj*x-teeth acute, rather narrow and little unequal : corolla open, about inch 

 long: capsule acute, not stipitate-contractecl at base. 



M. moniliformis, GREENE, in part. Filiform rootstocks ending in small moniliform 

 tubers : stems a span or two high, simple and erect or with spreading brandies : leaves ovate 

 or oblong, acute or obtuse, half-inch to inch long, sparingly denticulate : calyx-teeth trian- 

 gular, a quarter of the length of the tube : corolla barely inch long or less, light yellow, 

 narrowly fuunelform, short-bearded in the throat, the obscurely bilabiate limb half-inch in 

 diameter. Bull. Calif. Acad. i. 119, excl. the villous plant, on which, as to herbage, the 

 species was founded. M. dentatus, var. gracilis, Gray, Bot. Gazette, vii. 112. M. luteus, 

 var. alpinus, Gray, ed. 1, ii. 377. Rocky soil in the Sierra Nevada, from Alpine Co. to 

 Lassen, Greene, Lemmon, Jones, Mrs. Austin, &c. ; the mouiliferous rootstocks detected by 

 Greene. 



M. dentatus, NCJTT. Copious rootstocks filiform : simple stems a foot or less high : leaves 

 ovate to oblong, acute, one to three inches long, serrate with numerous commonly coarse 

 and salient teeth : calyx-teeth triangular-subulate, half the length of the tube : corolla ven- 

 tricose-fuunelform, fully inch long, deep golden yellow, with widely open throat and com- 

 paratively short moderately bilabiate limb, the two conspicuous lines of yellow beard ex- 

 tending from the lower sinuses to near the base. Herb. Hook., &c. ; Benth. in DC. Prodr. 

 x. 372 ; Gray in Bot. Gazette, vii. 112 ; Greene, 1. c. 109. In woods, Columbia River west 

 of the Cascades, Nuttull, Hou-rll, and western borders of California, Rattan. Nearly related 

 are M. Orizahe, Benth., of Mexico, M. sessilifolius, Maxim., of Japan, which has closely 

 sessile leaves and shorter and broader calyx-teeth ; also M. Nepalensis, in the erect and 

 larger-flowered form, which has broad and short abruptly pointed calyx-teeth. 



) -i H \ Leafy-stemmed, perennial by stoloniferous or creeping basal branches, or sometimes 



by filiform rootstocks, but seedlings flowering the first year, and precocious depauperate ones 

 dying at maturity of fruit, glabrous or sometimes minutely pubescent (but never clammy-hairy 

 or mucilaginous): leaves several-nerved from the base or near it: peduncles in fruit spreadinc: or 

 else the apex nodding: calyx at least in fruit oblique-sided and more or less inflated, also oblique 

 at orifice; the teeth all obtuse and broad (sometimes mucronulate, but never acute except when 

 folded); uppermost larger ; lower turned upward toward the upper at maturity of fruit : corolla 

 more or less personate : capsule obtuse or retuse, mostly contracted or short-stipitate at base. 

 H- Small-flowered for the size of the leaves and (leafy) branches; the light yellow corolla (at most 



half-inch long) not twice the length of the calyx: capsule short-oval, very obtuse or retuse. 

 M. glabratus, HBK. Diffuse or ascending from a creeping base : stems somewhat quad- 

 rangular : leaves round-oval or ovate, mostly denticulate or dentate; lower with margined 

 petioles, upper sessile by broad base : flowers mostly subtended by undiminished or little 

 diminished leaves : upper calyx-tooth much larger than the lower. Nov. Gen. & Spec. ii. 

 370 ; Benth. in DC. Prodr. x. 371 ; Gray, Bot. Mex. Bound. 116. M. Jamesii, var. Tf.rrnsis, 

 Gray, Syn. Fl. ii. 277. t\f. propinquus, Lindl. Bot. Reg. t. 1330 ; Benth. 1. c., but not from 

 "N. W. America." Texas, New Mexico, &c. (Mex. and southward.) 



Var. Jamesii. Diffusely procumbent, rooting extensively : leaves mainly orbicular 

 and almost entire, some approaching reniform, upper ones hardly diminished and equalling 

 the subtended peduncles. M. Gej/eri, Torr. in Nicollet Rep., 1843 (157), 237. M. Jamcsii, 

 Torr. & Gray, & p. 276. The most northeastern in its range, and extends well into Mexico, 

 if not to Guatemala. M. Madrensis, Seem. Bot. Herald, 322, t. 58, seems to be a diminu- 

 tive form of it. 



