es 
The Index to Vols. VII-XVI can be had for 50 cents. 
No. 3, Vol. Il, MEMOIRS, containing Mr. Theodor Holm’s paper ‘Studies in the Ger- 
mination of Some North American Plants,” with fifteen plates, is about ready for distribu- 
tion. Price, $1.00. 
ry 
VOL VILE 
APRIL, 
1891. No. 4 
BULLETIN 
OF THE 
TORREY BOTANICAL CLUB, 
A MONTHLY JOURNAL ‘OF BOTANY. 
EDITED BY 
NATHANIEL LORD BRITTON, 
AND OTHER MEMBERS OF -‘THE CLUB. 
CONTENTS: 
. PAGE. 
On the Formation of the Flower Buds of 
Spring-Blossoming Plants during the 
preceding Summer: Aug. F. Foerste:.. 101 
An Enumeration of the Plants collected 
by Dr, H. H. Rusby in South America, 
-1885-1886.—XVI.: V. L. Britton noes oe esa OO 
- The Fertilization of Three Native Plants: * 
LE J. WAR aia eee cut ee est a 
Variations of the Rootstock of- Sadia 
glauca dependent upon Environment: 
Wmct, Date oo Aan. 118 
An Undescribed Desmodium from Texas 
and Mexico: Anna Murray Vail........ 120 
Plants of Special Interest collected at 
PAGE 
the Air by Leguminous Plants; Re- 
cherches sur la Vrille des Passifiores; 
Key to the Genera and Species of Brit- 
ish MOSSOA. . <j. oe ip beens page Cae ei w way ae 
RECENT AMERICAN ‘amen ieone = An- 
thracnose of the Cotton and of the Hol- 
lyhock ; On some unreliable Criteria of 
Genera and Species of the Coscinodis- - 
ce; More about the Dewberries; De- 
formed Diatoms; European’ Aliens in 
America; Flora of the Great Falis Coal- 
fields, Montana; Fossil. Woods and 
Lignites from Arkansas; Notes on 
North American Trees; Prunus ilici- 
Orono, Maine: Merritt L. Fernald...... 120 | folia, “var. occidentalis; Sarcodeg san- 
REVIEWS OF FOREIGN LITERATURE.—La _ guinea; The Genus hea cakuaat and ~: 
génération sexuée des. Gleichéniacées; Vrister Notes. isa. 55s coeds denise oh 128 
Assimilation of the Free Nitrogen of _ | PROCEEDINGS OF THB CLUB............... 136 
NEW “YORK: 
” PREss OF Hour Lxehararnd: ar VANDEWATER STREET. 
