RHODORA,—A monthly journal of botany, devoted primarily to the flora of New 
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CARD-INDEX OF NEW GENERA, SPECIES AND VARIETIES OF 
AMERICAN PLANTS, 1885 TO DATE. 
For American taxonomists and all students of American plants the 
most important supplement to the Index Kewensis, this catalogue 
in several ways exceeds the latter work in detail, since it lists not 
only the flowering plants, but pteridophytes and cellular crypto- 
gams, and includes not merely genera and species, but likewise sub- 
species, varieties and forms. A work of reference invaluable for 
larger herbaria, leading libraries, academies of sciences, and other 
centers of botanieal activity. Issued quarterly, at $22.50 per 1000 
cards. 
GRAY HERBARIUM of Harvard University, 
Cambridge, Mass., U. S. A. 
CHECK LIST OF GRAY'S MANUAL, 7th EDITION, compiled by 
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Vol. I. Monograph of the genus Brickellia, by B. L. Robinson 
(with 96 text figures effectively illustrating all known species of the 
genus). Feb. 1917. $3.00. 
Gray Herbarium of Harvard University, Cambridge, Mass. 
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