[Vor. 11 
204 ANNALS OF THE MISSOURI BOTANICAL GARDEN 
abundant in sandy spots, trail to Dinkey Grove of Big Trees, 
near Dinkey Station, Fresno Co., 5500 ft. alt., 29 July, 1917, 
А. L. Grant 1200 (М and Calif.); in dry sandy places, often in 
large patches, Huntington Lake, Fresno Co., 7000 ft. alt., 
21 July, 1918, A. L. Grant 1458 (G, M, and Calif.) ; Huntington 
Lake, Fresno Co., 7000 ft. alt., 5 July, 1917, A. L. Grant 1041 
(Cornell, M, and Calif.); Huntington Lake, Fresno Co., 7000 
ft. alt., 16 July, 1917, А. L. Grant 1102 (G, Cornell, Phil., М, 
R. Mt., Calif., Stanford, Ore., and Pomona); Arnold Meadow, 
Madera Co., 26 July, 1918, A. L. Grant 1356 (Cornell, M, and 
СаШ.); King's Сайоп bed, King's River Cafion and Kearsarge 
Pass, Sierra Nevada, 5-15 July, 1900, Jepson 775 (Calif). 
This species is so closely related to M. Torreyi that it is not 
always easy to separate them by the shape of the calyx-teeth and 
capsule, as Greene suggested when he described M. Layneae. 
Typieal specimens of M. Torreyi have blunt calyx-teeth but 
sometimes calyces with blunt teeth or acute teeth are found on 
the same plant. Тһе most constant characters for separating 
the two species are found in the corolla, M. Layneae having à 
slender, much exserted reddish-purple corolla-tube and а narrow 
throat, whereas M. Torreyi has a little exserted, yellowish or pink 
corolla-tube with a broad, somewhat ventricose throat and pink 
or rose-pink lobes. The specimens of M. Layneae from northern 
California have densely pubescent corolla-tubes, and those from 
central California are sometimes nearly glabrous. 
83. M. nanus Hook. & Arn. Bot. Beechey's Voyage, 378. 1840; 
Gray in Proc. Am. Acad. 11: 96. 1876; Bot. Calif. 1: 564. 
1876; Syn. Fl. N. Am. 21: 274. 1878, ed. 2, excl. the yellow- 
flowered plant, and Suppl. 444. 1886; Piper, Contr. U. 5. Nat. 
Herb. 11: 508. 1906; Nelson in Coulter & Nelson, Manual 
= Rocky Mountains, 453. 1909; Hall, Yosemite Fl. 224 
12. 
M. nanus a pluriflorus Hook. & Arn. Bot. Beechey's Voyage 
2378. 1840. ; 
Eunanus Tolmei Benth. DC. Prodr. 10:374. 1846; Greene in 
Bull. Calif. Acad. Sci. 1:103. 1885; Howell, Fl. Northwest Am. 
518. 1903; Rydb. Fl. Rocky Mountains, 780. 1917. 
