Table of Contents. 
Vegetal dissemination in the genus Opuntia 
A study of some anatomical characters of North Ameri- 
sf p ie pit 356 
can Graminez (with plate xxv1) . Theo. Holm. 362 
Daniel Cady Eaton (with portrait; plate XxvI A) . 
Geo. E. Dpeepeve. 366 
The development of vegetable physiology ¥. C. Arthur. 381 
The Botanical Society of America . . 403 
Section G, A. A. A. S. : : . 406 
The Botanical Club of the " A. A. S. cee. | 
Contributions from the Cryptogamic etary re tar 
vard University . Roland Thaxter. 433, 477; 
New or peculiar fungi. (With plates XXIx, XXxXI) 
New or peculiar American Zygomycetes. I. (with 
plate XXXIV) 
The regulatory formation of mechanical tissue 
Frederick C. WAitianbé 441 
Recording apparatus for the study of transpiration of 
plants (with plate xxx) ‘ Albert F. Woods. 473 
Observations on the development of Uncinula spiralis 
(with plates XXXII, XXXIII) . B. T. Galloway. 486 
The botanical explorations of Thomas Coulter in Mexico 
and California (with plate xxxv) . 
Pruacbik. V. C. bite 
Undescribed plants from western Mexico. 
Merritt Lyndon Viviadd 
BRIEFER ARTICLES— 
Synchytrium on Geranium Carolinianum (with plate tv) 
Ida Clendenin. 
Formule for life histories . : : : John M, Coulter, 
Ure — ns ey lgagg anze Exsiccate ‘ M. Carleton. 
Isoetes sacchar ee Chalkey Palmer. 
The origin of oe achat organs of the Pteridophyta 
wnatet Houghton Campbell. 76 
Botanical notes en — he : . Aug. F. Foerste. 78 
Tillaea simplex ; : : . Maria L, Owen. 80 
Leucop . §. Cheney. 81 
Relationship of Caeoma nitens and Puccinia Peckiana G. P. Clinton. 116 
Some field notes F. D. Kelsey, 117 
Observations on the spider flower (illustrated) ‘ GE Schneck, 168 
Observations on Enslenia albida (with plate x1) 0. H, gered 170 
On the development of the bulb of oe adder’s tongue wit plate xiv 
A Bledeae 172 
