HHODORA.-— A monthly journal of botany, devoted primarily to the flora of New 
England. Price, $1.50 per year (domestic and foreign); single copies 15 cents. 
Prices of Volumes 1 and 2 (1899 and 1900) on application. All remittances by 
check or draft, except on Boston or New York, must include ten cents additional 
for cost of collection. Notes and short scientific papers, relating directly or 
indirectly to the plants of the northeastern states, will be gladly received and pub- 
lished to the extent that the limited space of the journal permits. Forms will be 
closed five weeks in advance of publication. Authors (of more than one page of 
print) will receive 25 copies of the issue in which their contributions appear. Ex- 
tracted reprints, if ordered in advance, will be furnished at cost. 
Address manuscripts and proofs to 
B. L. ROBINSON, 3 Clement Circle, Cambridge, Mass. 
Subscriptions, advertisements, and business communications to 
W. P. RICH, 300 Massachusetts Avenue, Boston, Mass. 
Single copies may be had from 
E. L. RAND, Corresponding Sec'y N. E. Botanical Club, 
1052 Exchange Building, Boston, Mass. 
Entered at Boston, Mass., Post office as Second Class Mail Matter 
KEY TO NEW ENGLAND TREES, Wild and Commonly Culti- 
vated, based primarily upon leaf characters, by J. FRANKLIN COLLINS 
and Howanp W. Preston. Price 40c. net. Preston & Rounps Co., 
Providence, R. I. 
CARD-INDEX OF NEW GENERA, SPECIES AND VARIE- 
TIES 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 merely the flowering 
plants, but pteridophytes and cellular cryptogams, and includes not merely 
genera and species, but likewise subspecies, varieties and forms. A work 
of reference invaluable for larger herbaria, leading libraries, academies of 
sciences, and other centers of botanical activity. Issued quarterly, at 
$15.00 per 1000 cards. 
GRAY HERBARIUM of Harvard University, 
Cambridge, Mass., U. S. A. 
CHECK LIST OF GRAY’S MANUAL, 7th EDITION, compiled 
by M. A Day. Leatherette. Pocket size. Invaluable for collec- 
tor’s memoranda and herbarium records. Published and sold by 
the Gray HERBARIUM, Cambridge, Mass. Price postpaid 20 cts. 
each. Ten copies $1.50. 
MEMOIRS OF THE GRAY HERBARIUM. A series of illustrated 
quarto papers issued at irregular intervals, sold separately. 
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. 
Advertisements of Nurserymen and Dealers in Botanical and other Scientific 
Publications are inserted in these pages at the following rates per space of 
4 in. by 3-4 in. 1 year $4.00, 6 months $2.50. 
