158 . Rhodora [SEPTEMBER 
mouth, alt. 97, Burlington, 2 August (Blake 2428). A most unex- 
pected occurrence of a plant of coastal plain range, hitherto known 
sparingly from Massachusetts to Illinois and Missouri. 
*POTAMOGETON BUPLEUROIDES Fernald. Shore of Winooski River, 
alt. 270, Essex Junction, 25 July (Blake 2212). Also a plant of coastal 
plain range, though less pronouncedly so, and likewise new to the 
state. 
*P. kprnvpRus Raf. var. CAYUGENSIS (Wiegand) Bennett. Shallow 
water in Winooski River, alt. 96, Burlington, 2 August (Blake 2425). 
New to the state. 
P. HETEROPHYLLUS Schreb. Along the Winooski, Essex Junction, 
21 and 25 July; shallow water, in Hinesburg Pond, Williston; Mal- 
letts Bay. 
P. pustttus L. Shore of Winooski, alt. 270, Essex Junction; shore 
of L. Champlain, Burlington. 
P. Ricuarpsoni (Benn.) Rydb. Mouth of Winooski, Burling-. 
ton. 
P. Ronniusu Oakes. Malletts Bay, Colchester, 9 August. 
ScHEUCHZERIA PALUSTRIS L. In sphagnum bog, Porters Swamp, 
Colchester. In herb. Boston Society of Natural History are a num- 
ber of specimens collected in Colchester by William Oakes. 
*SAGITTARIA ARIFOLIA Nutt. This species, not in Mrs. Flynn's 
list, proved to be rather common. It was first found on 22 July by 
Mrs. Flynn and myself, while collecting along the shore of Lake 
Champlain in Burlington, and later I met with it as follows: shore of 
Winooski, Essex Junction (a single small plant); flats of L. Champlain, 
Colchester, 2 August, first near the mouth of the Winooski, then 
between Mills Point and Porter Point along the muddy shore of the 
Lake; sandy shore of Malletts Bay; shore of Potash Creek, close to 
mouth, South Burlington. 
Forms or SAGITTARIA HETEROPHYLLA Pursh. 
The formal varieties of this species mentioned in Gray's Manual, 
being mere leaf forms without stable characters or particular range, 
are properly treated as formae. Doubtless all of them occur in Ver- 
mont. 
1. SAGITTARIA HETEROPHYLLA Pursh, Fl. Am. Sept. ii. 396 (1814). 
Leaves on the same plant varying from linear-lanceolate and entire 
