INDEX TO AMERICAN BOTANICAL LITERATURE 129 
Skan, S.A. Pyrola uliginosa. Curt. Bot. Mag. IV. 13: pl. 8770 A. 
Je 1917. 
A plant from North America 
Small, J. K. Aesculus parviflora. Addisonia 2: 45, 46. pl. 63. 29S 
1917. 
Small, J. K. The tree cacti of the Florida Keys. Jour. N. Y. Bot. 
Gard. 18: 199-203. pl. 206. S$ 1917. 
Includes description of Cephalocereus Deeringii sp. nov. 
Smith, C.P. Studies in the genus Lupinus—I. A new species of the 
subgenus Platycarpos. Bull. Torrey Club 44: 405, 406. 10 Au 
1917. 
Lupinus subvexus sp 
Soth, B. H. Plant life o on the peaks. Am. Bot. 23: 77-85. Au 1917. 
[Illust.] ‘ 
[Standley, P. C.] Botanical explorations in Florida and New Mexico. 
Smithsonian Misc. Coll. 66'7: 53-59. f. 54-6o. IQI7. 
Stapf, O. Pinus tuberculata. Curt. Bot. Mag. IV. 13; pl. 8717. S 
1917. 
A plant from western North America. 
Stevens, F.L. Spegazzinian Meliola types. Bot. Gaz. 64: 421-425. 
pl. 24-26. 16N 1917. 
Stevens, O. A. Plants of Manhattan and Blue Rapids, Kansas, with 
dates of fowecing—III. Am. Mid. Nat. 5: ii3-1290- -S ror. 
Stevenson, J. A. Wood rot of citrus trees. Porto Rico Dept. Agr. 
and Lab. Exp. Sta. Rio Piedras Circ. 10: I-10. 1917. 
Stevenson, J. A. An epiphytotic of cane disease in Porto Rico. Phy- 
topathology 7: 418-425. f. 7,2. 3 D 1917. 
Stewart, V.B. The perennation of Cronartium ribicola Fisch. on cur- 
rant. Phytopathology 7: 448, 449. 3 D 1917. 
Stewart, V. B. A twig and leaf disease of Kerria japonica. Phyto- 
pathology 7: 399-407. f. 1-6. 3 D 1917. 
Coccomyces Kerriae sp. nov. 
Stout, A.B. Notes regarding variability of the rose mallows. Torreya 
27: 142-148. 14 Au 1917. 
Stout, A. B. Observations on tulips. Jour. Hort. Soc. New York 2: 
201~206. pl. 37, 38. At 1917. 
Sturgis, W. C. Notes on new or rare Myxomycetes. Mycologia 9: 
323-332. DF t4, 16.. 24 N 1917. 
Includes Physarum _melanospermum P. lilacinum, Didymium fulvum and En- 
teridium minutum, spp. 
Swingle, L. A boighi- bole lemon. Jour. Heredity 8: 559. f. 8. 
D 1917. 
