Wolffia papulifera C.H.Thomps.

1
NEW YORK BOTANICAL GARDEN
03700901
^ PLANTS OF MARYLAND
Wolffia papulifera C* H. Thomps•	«
Upper surface light green, densely
light-puncticulate, flattish, rising
to a single low papilla near pouch end;
under surface	v	%
Abundant in C. & 0, Canal (rather low
water stage), between Locks 10 and 11, SW.
of Cabin John P.O., Montgomery Co.
S.F.Blake 12?53
2 May 195U
03700901