29G PROCEEDINGS: BOSTON SOCIETY NATURAL HISTORY. 
Locally common on the summit of The Dome and al)Out Plantin 
Pond, Mt. Washington. The most northern known station for this 
species of the Alleghany Mts. 
I. verticillata (L.) Gray. Black Alder. — Common on the 
plateau on open ill-drained hillsides and along roadsides; frequent in 
the valley on the borders of ponds and swamps. 
var. tenuifolia (Ton-.) Wats. — (/. bronxensis 111. Fl. ed. 2.) 
Shaded swamps; freciucnt. 
var. padifolia (Willd.) T. &. G.— Sheffield (Churchill). 
NEMOPANTHUS. Mountain Holly. 
{Ilicioides 111. Fl. ed. 2.) 
N. mucronata (L.) Trel. Mountain Holly. — Borders of ponds, 
boggy woods and rocky hill-tops; common. 
CELASTRACEAE. STAFF TREE FAMILY. 
CELASTRUS. Staff Tree. 
C. scandens L. Climbing Bitter-sweet; Waxwork. — Open 
rocky woods, roadside thickets and borders of streams; common in 
the valley. 
EVONYMUS. 
(Euonymus 111. Fl. ed. 2.) 
E. ATROPURPUREUS Jacq. Burning Bush. — Escaping from culti- 
vation, Stockbridge. 
STAPHYLEACEAE. BLADDER NUT FAMILY. 
STAPHYLEA. Bladder Nut. 
S. trifolia L. Bladder Nut. — Rich soil at the base of limestone 
ledges, and moist thickets along the Housatonic River; occasional. 
Pittsfield; Stockbridge; Great Barrington; Sheffield. 
ACERACEAE. MAPLE FAMILY. 
ACER. Maple. 
A. Negundo L. Box Elder. — Apparently indigenous along the 
Housatonic River; also frequently escaping from cultivation. 
