462 PROCEEDINGS OF THE AMERICAN ACADEMY, 
golden yellow, 2-toothed at the tip, about 4 mm. long; fructiferous bracts 
(without hood or appendage) marked with 3 rows of tubercles upon each 
lateral surface. — Collected by Dr. J. N. Rose between Rosario and 
Concepcion, Sinaloa, no. 3271. Type in herb. U. S. Nat. Museum. 
Var. subintegrum. Leaves clasping at the base but their margins 
unlobed, obsoletely crenate-serrate. — Collected by Dr. J. N. Rose at 
Rosario, Sinaloa, 7 July, 1897, no. 1568. 
20. M.mimulifolium. Dichotomously branched herb; stems pur- 
plish-streaked, loosely villous and finely pubescent along a longitudinal 
line : leaves lanceolate, acuminate, entire or obsoletely serrulate, 5 to 7 cm. 
long, 1.2 to 2 em. broad, appressed-pubescent upon both surfaces, some- 
what narrowed to an auriculate amplexicaul base: peduncles in the 
forks of the stem, 4 cm. long, filiform, covered with a fine spreading 
pubescence : outer involucre 5-parted ; segments ovate-lanceolate, acute, 
somewhat accrescent, appressed-villous: ligules about 8, short-oblong, 
2-3-toothed: fruit short, broad, somewhat quadrate, without hood or 
appendage, compressed, thin, depressed upon the lateral faces, finely 
tuberculate dorsally. — Collected by E. W. Nelson in the vicinity of 
Totontopec, Oaxaca, altitude 1700 to 2150 m., 15 July, 1894, no. 740. 
Type in herb. U. S. Nat. Museum. The foliage recalls that of Mimulus 
ringens. 
= = Leaves neither cordate nor auriculate-clasping (except obscurely 8° 
M. gracile). 
_a. Divisions of the outer involucre 8, ovate to ovate-lanceolate, acute or acuminate. 
21. M. panicutatum, Gardn. in Hook. Lond. Jour. Bot. vil. 287 
/ (1848). — Eastern and Central Brazil. 
22. M. Gracite, Less. Leaves rhombic, unlobed or panduriform, 
more or less narrowed to an obscurely auriculate or at least obtuse base. 
— Linnaea, vi. 407 (1831). — Papantla, Schiede & Deppe; Tantoyuc® 
Huasteca, Ervendberg, no. 92; Jalapa, CO. L. Smith, no. 1605. 
23. M. opLoneiroLtium, DC. Leaves oblong to oblong-lanceolate, 
acute to attenuate at the base, never lobed. — Prodr. v. 519 (1836). — 
era Cruz, near Orizaba, Botteri, no, 809, Seaton, no. 461, Cordova, 
Bourgeau, no. 1628, near Tantoyuca, Berlandier, no. 7333 Oaxaca, at 
San Felipe, Conzatti & Gonzdlez, no. 560; Michoacan, Pringle, ®° i 
4322 ; Morelos, Pringle, no. 7321; Costa Rica, Pittier, no. 6963. 
b. Divisions of the outer involucre 5, obliquely acuminate. 
24. M. microcerHatum, Less. Linnaea, ix. 268 (1834 
: species is known to me only from Lessing’s characterization and from 
__ excellent tracing, prepared from the type at Berlin by Mr. J. M. Green- 
.— This 
an 
