INDEX TO AMERICAN BOTANICAL LITERATURE 257 
Spegazzini,C. Crytogamae nonnullae fuegianae. An. Soc. Ci. 
Argentina 44: 59-85. f. r-6. Au 1922. 
Spegazzini, C. Micromycetes nonnulli brasilienses. An. Soc. 
Ci. Argentina 93: 111-118. f. 1-35. Ap 1922. 
Includes new species in Sphaerophragmium, Meliola, Sphaerella, 
Parapelella. 
Spessard, E. A. Prothallia of Lycopodium in America—lIl. 
Bot. Gaz. 74: 392-413. pl. 16-18. 21 D 1922 
Sponsler, O. L. The structure of the starch grain. Am. Jour. 
Bot. 9: 471-462. f. 3-9. 27. N- 1922. 
Sprague, T. A. The type-species of Bignonia. Jour. Bot. 60: 
404. 268.. TF 1922. 
Standley, P. C. Botanical exploration in Central America. 
Jour. New York Bot. Gard. 23: 168-175. N 1922. 
Standley, P. C. Diospyrcs Conzattii, a new species of per- 
simmon from Mexico. Jour. Washington Acad. Sci. 12: 
399, 400. 19 O 1922. 
Standley, P.C. Trees and shrubs of Mexico (Fagaceae—Faba- 
ceae). Contrib. U.S. Nat. Herb. 23: 171-515. 1922. 
Stevens, N. E. Environmental temperatures of fungi in nature. 
Am. Jour. Bot. 9: 385-390. f. 7. 30 Au 1922 
Stone, R. E. Leaf scorch or mollisiose of the strawberry. 
Phytopathology 12: 375-380. f. 1-3. 11 S 1922. 
Stout, A. B. Lilium canadense. Addisonia 7: 61, 62. pl. 255. 
30 D 1922. 
Stout, A. B. Lilium Parryi. Addisonia 7: 49, 50. pl. 249. 
30 D 1922 
Stout, A.B. Lilium superbum. Addisonia 7: 59, 60. pl. 254. 
30 D 1922 
Stout, A. B. Lilium tigrinum. Radeon 7: 83, 54. DF. 251. 
30 D 1922. 
Stout, A. B. Preliminary report of investigations with species 
of Lilium. Jour. New York Bot. Gard. 23: 155-158. O 
1922. 
