246 INDEX TO AMERICAN BOTANICAL LITERATURE 
Bissell, C. H. A day at Congamond lakes. Rhodora 13: 53-55. 3 Mr 
IQII. 
Blake, M. A. Peach yellow in young trees. Gard. Chron. Am. 12: 
167-170. Mr Igit. 
Blake, S. F. A Scirpus new to New Hampshire. Rhodora 13: 55. 
3 Mr 1911. 
Scirpus rubrotinctus var. confertus Fernald. 
Blanchard, W.H. A necessary change of name. Rhodora 13: 55, 56. 
3 Mr tort. 
Rubus amicalis nom. hov. 
Bédeker, F. Mamillaria bombycina Quehl und Mamillaria cordigera 
Heese. Monats. Kakteenk. 21: 25, 26. 15 F 1911. 
Bouly de Lesdain, M. Notes lichénologiques—XIII. Bull. Soc. Bot. 
France 57: 460-463. 3 D 1910. 
Toninia violacea and Psora concava spp. nov., from Mexico. 
Brenchley, W. E. The weeds of arable land in relation to the soils 
on which they grow. Ann. Bot. 25: 155-165. Ja 1911. 
Briggs, L. J., & Shantz, H. L. A wax seal method for determining 
the lower limit of available soil moisture. Bot. Gaz. 51: 210-219. 
Fidy 26 15 ie Yer: 
Butler,O. A study on gummosis of Prunus and Citrus, with observa- 
tions on squamosis and exanthema of the Citrus. Ann. Bot. 25: 
107-153. pl. 7-10 +f. 1-3. Ja 1911. 
Cardot, J. Diagnoses préliminaires de mousses mexicaines. Rev. 
Bryol. 38: 1-9. Ja 1911; 38: 33-43. F 1911. 
Carruthers, D. Contributions to the cytology of Helvella crispa, 
Fries. Ann. Bot. 25: 243-252. pl. 18,109. Ja 1911. 
Christensen, C. On some species of ferns collected by Dr. Carl Skotts- 
berg in temperate South America. Arkiv Bot. 102: 1-32. pl. i +f. 
“4. FOTO: 
Blechnum longicauda, Polypodium palagonicum, Hymenophyllum Skottsbergii 
spp. nov. 
Clute, W. N. Experiments with the nodding Allium. Am. Bot. 17: 
4,5. F 1911. [Illust.] 
Copeland, E. B. The ferns of Mount Apo. Leafl. Philipp. Bot. 3: 
791-851. 15 N rgro. 
16 new species described. 
Cowles, H.C. The causes of vegetative cycles. Bot. Gaz. 51: 161- 
182. 15 Mr 1911. 
