110 CALIFORNIA ACADEMY OF SCIENCES. 



very beautiful specimens collected in Humboldt County in 

 1882, by Mr. Rattan. 



Iff. Tilingi, Kegel. 



A span high, the inflorescence minutely puberulent and 

 viscid, plant otherwise glabrous: stems slender, naked at 

 base, rising from matted, fleshy, amber-colored, subtranslu- 

 cent rootstocks: leaves all cauline, in about 3 — 4 pairs, an 

 inch long, ovate, sessile, 3-nerved, with a few salient teeth: 

 flowers nearly terminal, few or solitary, on long, erect pedun- 

 cles: calyx campauuhite, purple-dotted, the teeth broad, the 

 upper one largest: corolla an inch long, personate; throat 

 densely bearded and purple-dotted; limb clear yellow. — 

 Gartenfl. 1869. t. 631. 31. luteus, var. alpinus, Gray, 1. c. 

 as to the Calif ornian plant only; that of the Rocky Mount- 

 ains being of a distinct species, doubtless 31. rivularis, Nutt, 

 a mere form of 31. guttatus, DC. 



This beautiful plant grows in masses on wet rocks, along 

 streams in the higher Sierras, from Lassen's Peak (Mrs. 

 Austin) northward and southward. It is readily distinguish- 

 able by its peculiar rootstocks, from any one of the various 

 species which at first sight appear much like it. 



M. guttatus, DC. 



Glabrous or pubescent; racemose flowering stems 1 — 1 

 feet high, erect and simple, commonly stout and fistulous, 

 nearly terete; the basal portion, for a few inches, horizontal, 

 rooting at the joints and thus perennial: leaves from orbicu- 

 lar to oblong-ovate, 1 — 3 inches long; the radical petioled 

 and occasionally somewhat lyrate; the cauline sessile: the 

 floral reduced and connate-clasping; all more or less tooth- 

 ed or denticulate: peduncles ascending, an inch or more 

 long, slender: calyx ventricose-campanulate, teeth broadly 

 triangular, obtuse or acute, the upper one largest: corolla 

 an inch or more long, strongly bilabiate, not personate, 

 light yellow; the ample throat often dotted with red. — Cat. 

 Hort. Monsp. 127; Hook. & Arn. Bot. Beech. 153; Hook. 



