[Vor. 11 
254 ANNALS OF THE MISSOURI BOTANICAL GARDEN 
61. M. diffusus Grant! РІ. 5, fig. 1. 
А low diffusely branched annual; stems 7-20 em. long, minutely 
puberulent; leaves oblong, ovate or lanceolate, 1-2 cm. long, 
3-7 mm. wide, irregularly dentate, sessile, the basal leaves 
petioled and usually rosulate; pedicels slender, minutely puber- 
ulent, 3-5 times as long as the leaves, usually spreading horizon- 
tally with the ends curved upwards in mature specimens; calyx 
oblong-campanulate, 5-7 mm. long, weakly angled, more or less 
colored with red, the ribs green, frequently tinged and tipped 
with red, usually thickened, especially at the base, teeth mostly 
glabrous, short, broadly obtuse, almost truncate, mucronate; 
corolla 1.3-1.7 em. long, rose-red, tube slender, exserted, yellow, 
expanding gradually to the reddish-purple narrowly funnelform 
throat, often marked with yellow patches or spots, lobes equal, 
emarginate, little spreading, more or less irregularly marked with 
reddish-purple or yellow and with club-shaped hairs scattered 
over the inner surface; stamens included, anthers yellow, gla- 
brous, filaments pubescent, slender, flattened; style pubescent, 
included, stigma tinged with rose-red, lips equal, rounded, 
fimbriate; capsule oblong, included, placentae separating at the 
apex; seeds oval, favose-areolate. | 
Distribution: arid regions of Riverside Co., and San Diego Co. 
California, and in Lower California. 
Specimens examined: 
California: Tahquitz trail near Idyllwild, San Jacinto Mts, 
8 July, 1921, Spencer 362 (Pomona Coll. Herb.); dry hillside, 
south of Tuscalata Creek, Riverside Co., 30 April, 1922, 
Munz 5185 (Pomona); Rice Canyon, Santa Ana Mts., River 
side Co., 24 April, 1923, Baer (Pomona); wet sand along 
stream, Kenworthy, Thomas Valley, San Jacinto Mts., 4800 
ft. alt., 20 May, 1922, Munz & Johnston 5467 (Pomona); 
Palomar, 29 May, 1901, Jepson & Hall 1959 (U. S., M, ТҮРЕ, 
and Stanford) ; meadow at east base of Morgan Hill, P pns 
1 Mimulus diffusus Grant, sp. nov., annuus; caulibus 7-20 еп. longis, diffust; 
foliis oblongis, ovatis lanceolatisve, 1-2 cm. longis, 3-7 mm. latis; pediculis ^ 
bus, foliis 3-5-plo longioribus; calyce infirme angulato tincto rubro; corolla 
em. longa, rosea; antheris glabris, filamentis pubescentibus.—Collected at gr 
San Diego Co., 29 May, 1901, W. L. Jepson & Н. M. Hall 1959 (U. 8. Nat- 
Mo. Bot. Gard. Herb., no. 112584, түре, and Stanford Univ. Herb.). 
