0 
CONTENTS 
Evans, ALEXANDER WILLIAM. Hepaticae of Puerto Rico, VII. Sticto- 
lejeunea, elaine ies nines and 6 Ne (with 
plates 1-4) - 
“il 
RYDBERG, PER AXEL. Sitidted on the Ravky Mountain ee XVII - 35 
HAYNES, CAROLINE COVENTRY. Two new species of oe from 
Jamaica (with plates 5 and 6 57 
WILson, Guy West. Studies in North American Peronosporale, I, 
The genus Albugo (with ten figures) - « 61 
BURLINGHAM, GERTRUDE SIMMONS. Some Lactarii from Windham 
County, Vermont - Bt ee - 85 
Peck, CHARLES Horton. New species of fungi - * OF 
NASH, GEORGE VALENTINE. Costa Rican orchids, I (with piste 7 uw 8) 113 
GAGER, CHARLES STUART. An occurrence of sored in the Ce of 
Zea Mays (with three figures) - * 445 
BRITTON, ELIZABETH GERTRUDE, and HoLiick, CHARLES ARTHUR. 
American fossil mosses, with description of a new resend from. 
Florissant, Colorado (with plate . “439 
Housre, HomeR DoLiverR. Studies in the North American Cunvilvula: 
ceae, a Célveabains. Bonamia, and midgets - - - 143 
MACKENZIE, KENNETH KENT. Notes on Carex, II ee 
ROWLEE, WILLARD WINFIELD. Two new willows — the pe akiaicis 
Rocky Mountains - ~ 157 
Cook, MELVILLE THURSTON. ‘The embryology of _Rbytdophyllum 
(with plate ro) - ek 
BERRY, EDWARD WILBER. Gatibalions to the Mesozoic ‘dae of the 
Atlantic coastal plain, II. North Carolina (with plates 11- 16) - 185 
GRIFFITHS, Davip. Concerning some West American fungi - - 207 
IRKWOOD, JOSEPH EDWARD. Some features of ieee in 
: the Cucurbitaceae (with plates 17-21) - edad 
UNDERWOOD, LucrEN Marcus. American ferns, VIL. A pretinihary 
review of the North American Gleicheniaceae (with two figures) - 243 
ABRAMS, LE Roy. Studies on the flora of Southern California, II - 263 
Cook, MELVILLE THURSTON. The sia Goad of ws Mangle 
(with plates 22 and 23) - ane 
SCHREINER, OSWALD, and REED, HowAnp SPRAGUE. The proc 
tion of deleterious excretions by roots (with a — - - 279 
SHEAR, CoRNELIUS Lorr. New spe cies of fungi - 395 
Knox, ALICE ADELAIDE. The sten: of Ibervillea Sonorae (th sits 
24 and two figures) - io i 
