CONTENTS 
BLUMER, J. C. 
A Flowering Season in the Mountains of Arizona a7 
COCKERELL, T. D. A. 
Sisymbrinm Vaseyi 5 
A new Name for Euphorbia montana 56 
New Combinations 68 
COMPILATIONS 
Observations sur la Vegetation de I’Ile de Sitcha 6, 44, 82 
DAvIpDsoN, ANSTRUTHER 
The Delphinii of Southern California 33 
A Trip to the Tehachapi Mountains 65 
EDITORIAL Ti, Bt Gg oree BF 
Foster, A. S. 
Polypodium Scouleri a 
G. G. 
An Opinion II 
Decidedly Dull 62 
HELLER, A. A. 
Where was Ribes bracteosum Published? 14 
Two Californian Species of Ribes 27 
New Combinations 40 
Muhlenberg and his work in Lancaster County, 
Pennsylvania 70 
Recent Publications—Gray’s New Manual of Botany 74 
Is Spiraea pyramidata a Hybrid? Sr 
The Generic Name Centaurium 85 
“Aspects of the Species Question” 89, IOI 
House, HOMER DOLLIVER 
The Genus Rosenbergia 22 
Synopsis of the Californian Species of Convolvulus 49 
