CONTENTS 
SMITH, CHARLES PIPER. Studies in the genus ah cpio The Mic- 
rocarpi, exclusive of Lupinus densiflorus I 
Harper, RoLAND M. The — ee of newbies: iste Michigan : 
and its environment - 23 
TENopYR, LILLIAN A. On the constancy of a shape i in ea of varying 
shape 51 
HARPER, Shikinn T. Two seacieaihe Discomycetes hie ae - 77 
Stet, W. N. Studies of some new cases of apogamy in ferns (plates 4,5) - 93 
Harris, J. ARTHUR, and Avery, B. T. Correlation of morphological varia- 
tions in the seedling of Phesestus vulgaris - 109 
Rock, JosEpH F. New species of Hawaiian slate (plate 6) - - - 133 
ARTHUR, JosEPpH CHARLES. New species of Uredineae—X = - - - 141 
Humpert, E. P. A striking variation in Silene satiate - - ~ 157 
SMITH, aoe Preer. Studies in the eae ciple al eat den- 
ifloru - 167 
PETRY, pene C. Studies i in the eogeritian of New York pO ues - 203 
ON Makoto. A carrier of the mosaic disease (plate sl - - 219 
ANS, ALEXANDER W. The air chambers of Grimaldia fragran - 235 
Macleans, VAUGHAN. The strand flora of the Hawaiian. Archipelago 
—I. Geographical relations, origin, and composition- - 2 
Berry, EpwarpD W. Notes on the fern genus Clathropteris - - - 279 
Donce, B. C. Studies in the genus Gymnospora — Bo 2 on 
cultures made in 1915 and 1916 (plate 8) - - - 287 
WEATHERWAX, PauL. The evolution of maize - 309 
Boas, HELENE M. The relationship between the number of sporophylls 
and the number of stamens and pistils—a criticis 
CouTANT, Mary WoTHERSPOON. Wound oan in ge cacti (plate 
9 =. g00 
ici! Py os P. The ions nad flowering ‘elite of Nantucket XIX 365 
Brown, ELIZABETH Wuist. Regeneration in Phegopter. a - 391 
FERRIS, ROXANA STINCHFIELD. Sharan: and a of Adenos 
(plates 10- O-I2) - 
CoKxer, DorortHy. Revision of the North Aan gras a iucilerie 
(plates 13, 14) - se eae 
GrarF, Paut W. Philippine Basidiomyeetes—II (plate rs) 51 
PENNELL, Francis W. Notes on plants of the southern United States—IV 477 
nesgeenertgge VAUGHAN. The sors flora of the Hawaiian Archipelago 
—II. Ecological relations - 483 
INDEX TO AMERICAN BOTANICAL LITERATU - 43, 
87, 121, 159, pet 253, 301, pes 385, 425, 471, 503 
INDEX TO VOLUME 45 - - - - - - - - - - SIL 
