414 INDEX TO AMERICAN BOTANICAL LITERATURE 
Rehder, A. Rhododendron carolinianum, a new ‘rhododendron from 
North Carolina. Rhodora 14: 97-102. 14 Je 1912 
Robinson, W. J. A taxonomic study of the Pteridophyta of the 
Hawaiian Islands—I. Bull. Torrey Club 39: 227-248. pl. 18-20. 
8 Je 1912. 
Sackett, W. G. Bakteriologische Untersuchungen tiber die Stickstoff- 
bindung in gewissen Bodenarten von Colorado. Centralb. Bakt. 
Zweite Abt. 34: 81-115. f. 1-5. 15 My 1912. 
Schlechter, R. Orchidaceue novae et criticae. Decas XXXIV. Re- 
an ig Nov. 10: 480-486. 5 My 1912. 
Includes new species in Spiranthes (2), Cranichis (1), Oreorchis (1), Lepanthes 
(1), ppeargies (3), and Campylocentrum (1) from Central America 
Setchell, W. A. Algae novae et minus cognitae, I. Day. Calif. Pub. 
Bot. 4: 229-268. pl. 25-31. 29 My 1912 
Describes aby ote gy sae Ae ncaa: & + ecdiend Besa papillaeformis 
Setchell, 0 plumosa Setchell, gen. et spp. nov.; Fauchea Fryeana Setchell, 
Dudresnaya bermudensis Sache teams prtiies Setchell, and Weeksia Fryeana 
Scull, ok nov. 
Stewart, R., & Greaves, J. E. The production and movemeat of 
nitric nitrogen in soil. Centralb. Bakt. Zweite Abt. 34: 115-147. 
f: 1% 15 My 1912. 
Taylor, N. Perennials for the shady nook. Gard. Mag. 15: 308-310. 
Je Lae 
Nearly fifty plants that will flower without full sunshine.” 
Trelease, W. The classification of the black oaks. 
Soc. 51: 167-171. pl. 10-13. Je 1912 
Urbina, M. Los Amates de jaipis ies 6 Baek mexicanas. La 
Naturaleza III. (Revista Cien.) 1: 32-53. 19 
Urbina, M. Notas acerca de los Copales de Herninde las Burse- 
raceas mexicanas. La Naturaleza III. 1: 13-31. 19 
Vallida, M. M. Una vida ennoblecida por el a y ae 
cumplimiento del deber. La Naturaleza Lil. 2: XLI-XLVI 
portrait. 1912. 
Biographical notice of Dr. Manuel Urbina y Altemirano, 
Vaupel, F. Sieben neue Kakteen aus Kuba. Monats- 
65-67. 15 My 1ror12. 
A translation of the descriptions of the seven species descr! 
Rose in Torreya 12: 13-16. 
Vaupel, F. Aus meiner Sammlung. Monats. Kakteenk. 22 
Proc. Am. Phil. 
with bibliography: 
Kakteenk. 22: 
ibed by Britton and 
: 69-71. 
Monats. Kakteenk. 22 
‘Vaupel, [F.] Echinocereus de Laetii Giirke. 
72. 15 My i912. [Illust.] 
