496 INDEX TO AMERICAN BOTANICAL LITERATURE 
Berry, E. W. The physical conditions and age indicated by the flora 
of the Alum Bluff formation. U. S. Dept. Int. Geol. Surv. Prof. 
sora 98—-E: 41-59. pl. 7-10+f. 8. 27 My 1916. 
In es Ulmus floridana, Sabalites apalachicolensis, Pisonia apalachicolensis 
patesinen Sellardsi, Fagara apalachicolensis, Rhamnus apalachicolensis, Bum eila 
apalachicolensis, Nectandra apalachicolensis and Sapotacites Spatalatus, spp. nov. 
Berry, E. W. The physical conditions indicated by the flora of the 
Calvert formation. U. S. Dept. Int. Geol. Surv. Prof. Paper 98 
F: 61-73. pl. 12, 12. 27 My 1916. 
Includes Quercus chapmanifolia, Ilex Calvertensis, Phyllites cercocarpifolia, Cassia 
toraformis and Berchemia priscaformis, spp. nov. 
Bicknell, E. P. The ferns and flowering plants of Nantucket— XVI. 
Bull. Torrey Club 43: 265-276. 16 Je 1916. 
Includes Galinsoga aristulata sp. nov. 
Bigelow, H.C. Fall fruiting of the interrupted fern. Am. Fern Jour. 
6: 56. Je 1916. 
Boyer, C. S. The Diatomaceae of Philadelphia and vicinity. 1-143. 
pl. 1-40+frontispiece. Philadelphia. 1916. 
Britton, E. G. The preservation of our native plants. Jour. N. p's 
Bot. Gard. 17: 72,73. 22 Je 1916. 
Britton, E. G. Wild plants needing protection. 11. ‘Bloodroot” 
(Sanguinaria canadensis L.). Jour. N. Y. Bot. Gard. 17: 63, 64- 
pl. 171. 22 Je 1916. 
Britton, E. G. Wild plants needing protection. 12. “Fringed Gen- 
tian” (Gentiana crinita Froel.). Jour. N. Y. Bot. Gard. 17: 81, 82. 
pl. 172. 14 Jl 1916. 
Britton, N. L. The natural vegetation of the Isle of Pines, Cuba. 
Jour. N. Y. Bot. Gard. 17: 64-71. pl. 170. 22 Je 1916. 
Burlison, W.L. Availability of mineral phosphates for plant nutrition. 
Jour. Agr. Research 6: 485-514. pl. 73-80. 26 Je 1916. 
‘Burnham, S. H. The admirable Polyporus in the flora of the Lake 
George region. Torreya 16: 139-142. 15 Je 1916. 
Buswell, W. M. The birch harvest. Am. Bot. 22: 16-18. F 1916. 
{Ilust.] 
Campbell, D. H. The aeerae a and sporophyte of Treubia in- 
signis Goebel. Am. Jour. Bot. 3: 261-273. f. 1-6. 153Jl 1916. 
Carhart, M. A collector’s list of New Jersey ferns. Am. Fern Jour. 
6: 51-54. Je 1916. 
Churchill, J.R. Lappula deflexa in Vermont. Rhodora 18: 138-140. 
1 Je 1916. 
