BOTANICAL GAZETTE

THE

BOTANICAL GAZETTE

EDITORS:

JOHN MERLE COULTER AND CHARLES REID BARNES

VOLUME XLVIII
JULY-DECEMBER, 1909

WITH EIGHTEEN PLATES AND ONE HUNDRED AND TWENTY-ONE FIGURES

CHICAGO

THE UNIVERSITY OF CHICAGO PRESS

1909

July, August, September, October, November, December, 1909

Composed and Printed By
The University of Chicago Press
Chicago, Illinois, U. S. A.

TABLE OF CONTENTS

Variation of fungi due to environment (with thirty-

F. L. Stevens and J. C. Hall

seven figures)

The development of the gametophytes and fertiliza-

tion in Juniperus communis and Juniperus vir-

giniana (with plates I-IV)

The structure of the wood in the Pineae (with plate V)

Evolutionary tendencies among gymnosperms. Con-

tributions from the Hull Botanical Laboratory

127

On similarity in the behavior of sodium and potassium

(with four figures)

Toxic and antagonistic effects of salts as related to

ammonification by Bacillus subtilis (with five

figures)

The gametophytes of Calopogon (with plates VII-IX)

On mesarch structure in Lycopodium (with plate X)

Preliminary account of the ovule, gametophytes, and

embryo of Widdringtonia cupressoides (with plate

XI and three figures) ·

PAGE

I

-

Reginald Ruggles Gates 179

The behavior of chromosomes in Oenothera lata X

O. gigas. Contributions from the Hull Botanical

Laboratory 128 (with plates XII-XIV)

The development of the embryo sac of Smilacina

stellata (with plate XV)

A study of piñon pine

The embryo sac of Habenaria (with twelve figures)

The influence of traction on the formation of mechani-

cal tissue in stems

The modifiability of transpiration in young seedlings

(with five figures)

A remarkable Amanita (with eight figures)

Undescribed plants from Guatemala and other Cen-

tral American republics. XXXII

Some fungus parasites of algae (with seven figures)

Mitosis in Synchytrium (with plates XVI-XVIII)

Influence of electricity on microorganisms (with two

figures)

Cytology of Cutleria and Aglaozonia. Contributions

from the Hull Botanical Laboratory 129 -

F. McAllister 200

F. J. Phillips 216

William H. Brown 241

John S. Bordner 251

Joseph Y. Bergen 275

George F. Atkinson 283

John Donnell Smith 294

George F. Atkinson 321

Robert F. Griggs 339

George E. Stone 359

Shigéo Yamanouchi 380