1924] і 
GRANT—A MONOGRAPH OF THE GENUS MIMULUS 325 
ular, spirally twisted over the capsule in fruit, teeth equal; corolla 
bilabiate, tube elongated, ampliate, lobes unequal; anthers gla- 
brous; style pubescent; capsule coriaceous, tardily dehiscent to 
the base along both sutures, placentae separating completely. 
Sp. 106. 
106. M. Treleasei Grant! Pl. 3, fig. 1. 
Stem woody, terete, mahogany-colored, glabrous; leaves ob- 
ovate or elliptical, 2-3 cm. long, 1-1.5 em. broad, acute, denti- 
culate along upper half, with mucronate teeth, thick, almost 
coriaceous, glabrous, shining, covered with sessile glands, tapering 
to a short, narrow petiole, smaller leaves fascicled in the axils; 
pedicels stout, shorter than the leaves; calyx cylindrical, 1.4-1.5 
em. long, leathery, covered with sessile glands, becoming spirally 
twisted over the capsule in'fruit, teeth ciliate, truncate, tipped 
with a slender almost subulate point; corolla tubular, 4.2-4.4 cm. 
long, throat ampliate, tube at least twice as long as the calyx, 
pubescent externally, lobes short, rounded, slightly erose, ciliate, 
8-10 mm. long, lobes of the upper lip longer and broader than 
those of the lower lip and strongly reflexed, lower lip more or less 
spreading; stamens exserted, filaments thin, flattened, pubescent, 
anthers glabrous; style sparingly pubescent, stigma lobes oblong, 
equal; capsule included, about half as long as the calyx, slightly 
stipitate, thick, coriaceous, broadly oblong, 7 mm. long, 4 mm. 
Wide, compressed, tardily dehiscent to the base along both sutures; 
Placentae separating completely; seeds oblong, longitudinally 
wrinkled 
Distribution: known only from the type locality. 
pecimens examined: 
Puebla: Tehuacan, 2 June, 1905, Trelease 68 (M, TYPE). 
M. Treleasei is a peculiar species, combining the calyx char- 
acters of Eumimulus with the shrubbiness, the pubescent style, 
‚+ Mimulus Treleasei Grant, sp. nov., caules lignosi, glabri; foliis obovatis ellipti 
Әуе, acutis, denticulatis, dentibus mucronatis, petiolis brevibus, crassis. 
lucidis, eum glandibus sessi us; pediculi ii 
vibus, rotundis, ciliatis; staminibus exsertis, antheris glabris; stylo vix pubes- 
1 ; capsula coriacea, tarde dehiscente.—Collected at Tehuacan, Mexico, 2 June, 
905, Wm. Trelease 68 (Mo. Bot. Gard. Herb. 112585, TYPE). 
