[Vor. 11 
236 ANNALS OF THE MISSOURI BOTANICAL GARDEN 
than the leaves, erect, somewhat spreading; calyx oblong, mem- 
branaceous, pale grayish-green, 8-9 mm. long, fruiting calyx 
1-1.2 em. long, not inflated, teeth short, 1-2 mm. long, equal, 
broadly deltoid-acute, the margins sparsely glandular-ciliate; 
corolla pale pink to rose or lilac, rarely white, 1-1.3 em. long, 
tube and throat included, lobes subequal, exserted, erect, truncate 
or rounded and slightly erose; stamens included, glabrous; style 
and stigma slightly exserted, glabrous; stigma-lips unequal, 
oblong; capsule included, chartaceous; seeds oblong, smooth, 
apiculate at each end. 
Distribution: along streams in the desert mountain regions of 
southern California. 
Specimens examined: 
California: Cox’s Ranch, Mohave River, Aug., 1882, Parish & 
Parish 1465 (U. S., F, Calif., and Stanford, type collection); 
Rock Springs, north side of San Bernardino Mts., June, 1886, 
Parish 1460 (U. S. and Greene); Rock Springs, north side of 
San Bernardino Mts., 13 June, 1888, Parish (U. S.); Rock 
Springs, borders of Mohave Desert, June, 1886, Parish (Calif.); 
Rock Creek, 1 Aug., 1901, Davidson (Stanford); Rock Creek, 
San Gabriel Mts., 4750 ft. alt., 16 June, 1918, Pierson 199 
(Calif.); Rock Creek, San Gabriel Mts., 3800 ft. alt., 2-4 July, 
1908, Abrams & McGregor 559 (U. S. and Stanford); Los 
Angeles Co., June, 1884, Nevin 1068 (G); Big Meadows, San 
Bernardino Mts., 7000 ft. alt., 26 July, 1906, H. M. Hall ?571 
(M, R. Mt., and Calif.) ; river banks, Victorville, 25 June, 1915, 
Parish 10587 (G and Stanford); Palm Cafion, near Mt. Ban 
Jacinto, 22 May, 1901, Jepson 1402 (Calif.); wet ground, 
Coyote Hole, Little San Bernardino Mts., 3000 ft. alt., 6 May, 
1922, Munz & Johnston 5202 (Pomona); wet sandy 5950, 
Smith Water Canyon, near Quail Springs, Little San Bernar" 
dino Mts., 7 May, 1922, Munz & Johnston 5215 (Pomona). 
Mexico: 4 
Lower California: San Rafael, northern Lower California, 19 
Sept., 1884, Orcutt (M). 
52. M. Lewisii Pursh, Fl. Am. Sept. 2: 427, pl. 20. E 
Benth. Scroph. Ind. 28. 1835; DC. Prodr. 10: 370. 19% 
