1918] Flora of the Boston District,— XXVI 15 
is nothing more nor less than Hydrangea arborescens L. The name 
V. OpuLus var. AMERICANUM Ait. Hort. Kew. i. 373 (1789) (as £. 
americana), which was published without reference to Miller’s name, 
may continue in use for the plant. 
The changes in nomenclature here proposed may for convenience 
of reference be summarized as follows. 
VIBURNUM AFFINE Bush.— V. pubescens auth., not Pursh. For 
varieties, see discussion. 
VIBURNUM PUBESCENS (Ait.) Pursh.— V. venosum Britton. 
V. PUBESCENS (Ait.) Pursh var. Canbyi (Rehder).— V. venosum 
var. Canbyi Rehder, Ruopora vi. 60 (1904). 
V. pusescens (Ait.) Pursh var. longifolium (Dippel).— V. den- 
tatum var. longifolium Dippel, Handb. Laubholzk. i. 183 (1889). V. 
longifolium “ Loddiges” Zabel, in Beisnner, Schelle, & Zabel, Handb. 
Laubholz-Ben. 441 (1903). V. venosum var. longifolium (Dippel) 
Rehder, Ruopora vi. 61 (1904). 
VisurnuM Oputus L. var. AMERICANUM Ait.— V. Opulus var. 
americanum “ (Mill). Ait.” of auth. 
Gray HERBARIUM. 
REPORTS ON THE FLORA OF THE BOSTON 
DISTRICT,— XXVI. 
ROSACEAE. 
AGRIMONIA. 
A. gryposepala Wallr. Rich woods and thickets, frequent. 
A. mollis (T. & G.) Britton. Moist woods, Oak Island, Revere; 
open woods on talus of diorite, Horn Pond Mt., Woburn. 
A. striata Michx. Woods and roadsides. No stations reported 
from southeastern towns; frequent elsewhere. 
ALCHEMILLA. 
A. VULGARIS L., var. vestira (Buser) Fernald & Wiegand. Five 
plants in a chicken-yard, Westford (Emily F. Fletcher, September 22, 
1906, in Ruopora ix. 92, 1907, as A. pratensis F. W. Schmidt). See 
Fernald & Wiegand, Ruopora xiv. 233, 1912. 
