INDEX TO AMERICAN BOTANICAL LITERATURE 485 
Murrill, W. A. Illustrations of fungi—VII. Mycologia 2: 159-163. 
pl. 27. 15 JV rote, 
Sebel ee) abet H. ceraceus, H. chlorophanus, H. onthe. A. puniceus, 
H. nitidus, H. eus, H. conicus, H. miniatus, and H. Lau 
Nakano, H. Variation and correlation in rays and disk of Aster fastig- 
iatus. Bot. Gaz. 49: 371-378. f. I-4. 17 My 1910. 
O'Kane, W. C. The Ohio powdery mildews. Ohio Nat. 10: 166-176. 
pl. 9, 10. 9 My 1910. 
Osterhout, G.E. Two Colorado Umbeiliferafe]. Muhlenbergia 6: 59, 60. 
30 Je 1910.  [Illust.] 
Phellopterus macrocarpus and Cymopterus lucidus, spp. nov. 
Peace, L. M. Notes upon the clearing and staining of leaves and stems. 
Plant World 13: 93-96. [My] 1910. 
Pittier, H. New or noteworthy plants from Colombia and Central America 
—II. Contr. U.S. Nat. Herb. 13: 93-132. f. 1-41+ pl. 17-20. 11 Je 
Ig10. 
Ramaley, F. European plants growing without cultivation in Colorado. 
Ann. Jard. Bot. Buitenzorg Suppl. 3: 493-504. 1910. 
Rehder, A. A new hybrid Cornus (Cornus rugosa X stolonifera). Rho- 
dora 12: 121-124. 13 Je 1910. 
C. Slavinii Rehder. 
Robinson, B. L. Spermatophytes, new or reclassified, chiefly Rubiaceae 
and Gentianaceae. Proc. Am. Acad. Arts & Sci. 45: 394-412. [20] 
My togto, 
Rolfe, R. A. New orchids: decade 35. Kew Bull. Misc. Inf. 1910: 158- 
162. GTO, 
Lycaste peruviana, Anguloa Cliftoni, spp. nov., both South American. 
Roll, J. The typical form and the series of forms. Bryologist 13: 77-79. 
Jl 1910. 
Rydberg, P. A. Balsaminaceae. N. Am. Flora 25: 93-96. 3 Je 1910. 
Rydberg, P. A. Limnanthaceae. N. Am, Flora 25: 97-100. 3 Je 1910. 
Rydberg, P. A. Notes on Rosaceae—IlI. Bull. Torrey Club 37: 375- 
386. 29 Jl 1910. 
Schaffner, J. H. A proposed list of plants to be excluded from the Ohio 
catalog. Ohio Nat. 10: 185-190. 9 Je 1910. 
Schaffner, J. H. Xerophytic adaptations of Apocynum hypericifolium. 
Ohio Nat. 10: 184, 185. f. 1. 9 Je 1910. 
Schreiner, O., & Skinner, J. J. Ratio of phosphate, nitrate, and potassium 
on absorption and growth. Bot. Gaz. 50: 1-30. f. {-9. 14 Jl 1910. 
