INDEX TO AMERICAN BOTANICAL LITERATURE 43 
Rydberg, P. A. Studies on the Rocky Mountain flora—XXI. Bull. 
Torrey Club 37: 127-148. 31 Mr 1910. 
New species in Ambrosia, Chrysopsis (4), Chrysothamnus (3), Solidago (3), Aster 
(13), Doellingeria, and Machaeranthera. 
Rydberg, P. A. Studies on the Rocky Mountain flora—XXII. Bull. 
Torrey Club 37: 313-335. 21 JI 1910. 
Includes new species, one each, in Antennaria, Gnaphalium, Anaphalis, Gym- 
nolomia, and Othake. : 
Rydberg, P. A. Studies on the Rocky Mountain flora—XXIV. Bull. 
Torrey Club 37: 541-557. 30 N 1910. 
Includes new species in Saussurea (2) and Carduus (4). 
Rosenstock, E. Filices novae—V. Report. Nov. Spec. 7: 146-150. 
25 Je 1909. 
Includes new species from South America. 
Saunders, C. F. Some trees of the California deserts. Am. Bot. 
16: 97-100. N 1910.  [Illust.] 
Schaffner, J. H. Leaf markings of certain Ohio plants. Ohio Nat. 
II: 243-245. 15 D 1910. 
Schaffner, J. H. New and rare Ohio plants added to the state her- 
barium in 1910. Ohio Nat. 11: 246. 15 D 1910. 
Seaver, F. J. The Hypocreales of North America—III. Mycologia 2: 
48-92. pl. 20, 21. 8 Mr 1g10. 
Seaver, F. J. Collecting fungi in Colorado. Jour. N. Y. Bot. Gard. 
11: 247-255. f. 36-42. N 1910. 
Serner,O. Die Phyllokakteen, ihre Pflege und Anzucht aus Samen und 
Stecklingen. Monats. Kakteenk. 20: 1-5. f. 1-4. 15 Ja 1910; 
20: 17-21. f. 5-9. 15 F 1910. ; 
Small, J.K. Additions to the flora of peninsular Florida—II. Natur- 
alized species. Bull. Torrey Club 37: 513-518. 28 O 1910. 
Smith, C. P. Notes from northern Utah—I. Muhlenbergia 6: 37-39. 
12 My 1910;—II. Muhlenbergia 6: 61-63. f. ro. 26 Au 1910. 
Spaulding, P. Botrytis as a parasite upon chrysanthemums and poin- 
settias. Ann. Rep. Missouri Bot. Gard. 21: 185-188. pl. 32. D. 
1910. 
Spaulding, P. Fungi of clay mines. Ann. Rep. Missouri Bot. Gard. 
21: 189-195. f. z D 1910. 
Stevens, F. L., & Hall, J. G. Three interesting species-of Claviceps. 
Bot. Gaz. 50: 460-463. f. 1-8. 20 D 1910. 
