RHODORKA.—A monthly journal of botany, devoted primarily to the fiora 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 lista 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 
— of botanical activity. Issued quarterly, at $22.50 per 1000 
8. 
GRAY HERBARIUM of Harvard University, 
Cambridge, Mass., U. S. A. 
CHECK LIST OF GRAY'S MANUAL, 7th EDITION, compiled by 
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memoranda and herbarium records. Published and sold by the 
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Ten copies $1.50. 
MEMOIRS OF THE GRAY HERBARIUM. A series of illustrated 
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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. 
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