1924] 
GRANT—A MONOGRAPH OF THE GENUS MIMULUS 143 
ular hairs; leaves elliptical, obovate, rhombic-ovate or occasion- 
ally spatulate, 5-7.5 em. long, 1.5-3 em. wide, saliently and 
coarsely toothed above the middle, the serrations sometimes con- 
tinuing to the broad, frequently subcordate sessile base, 8-5- 
nerved from the base, the upper surface occasionally marked with 
a broad, irregular, somewhat triangular reddish-brown band; 
pedicels slender, quadrangular, 7-10 em. long, generally exceeding 
the subtending leaves; calyx prismatic, 2-2.8 cm. long, more or 
less white-villous at the base and often tinged or shaded with 
red, teeth equal, broadly deltoid-subulate, 5-6 mm. long; corolla 
3.5-5.5 em. long, rarely obscurely bilabiate, crimson, often 
tinged with yellow, the tube muth exserted, broadly funnelform, 
throat ampliate, lobes nearly equal, frequently emarginate and 
more or less truncate, the upper lip erect, the lower lip somewhat 
spreading; stamens much exserted, style about as long as the corol- 
la, stigma-lips oblong, rounded; capsule oblong; seeds oblong, 
longitudinally wrinkled. 
Distribution: north-central and southern Arizona to northern 
Mexico. 
Specimens examined: 
Arizona: Shinamo Creek, Grand Canyon, 21-26 Oct., 1906, 
Pilsby (PhiL); Bright Angel Trail, Grand Canyon, without 
date, Shockley (Stanford); Clear Creek, central Arizona, 14 
Aug., 1891, McDougal (U. S.); erevices in perpendieular walls 
of the сапуоп where water drips out, Clear Creek, Camp 
Verede, 9 Aug., 1891, Тоштеу (U. S., түре); Hermit Cave, 
Grand Canyon, 8 May, 1922, Wiegand & Upton (Cornell); 
along swift streams, Ramsey Cafion, Huachuca Mts., 10 June, 
1909, Goodding 135 (G and R. Mt.); edge of creeks and under 
overhanging rocks, Ramsey Cafion, Huachuca Mts., 20 Aug., 
1910, Goodding 739 (G and R. Mt.); Huachuca Mts., 29 June- 
5 July, 1903, Griffiths 4815 (U.S. and М); Huachuca Mts., 
5 June, 1897, Breninger (G); Fort Huachuca, 1890, Patzky 
(U. S.); shady river banks, Rio Verde, 10 Oct., 1865, Coues & 
Palmer 596 (M); Fort Huachuca, 26 April-21 Мау, 1890, 
ev. Palmer 441 (G); near Fort Huachuca, 1894, Wilcoz 1 19 
S). | 
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