University oi Alaska Herbarium (ALA)
Museum ofthe No|1h
H1151077
PLANTAE EXSICCATAE GRAYANAE
1122. Wolffia papulifera C. H. T11oM1>soN
In Ann. Rep. Mo. Bot. Gard. ix. 40, t. 4- D (1898) [N.
Ain. Lemnaceae, Preprint, 20 (1897) ]; Robinson & Fer-
nald in Gray, Man. ed. 7, 260 (1908); Britton & Brown,
I11. F1.ed.2,i. -119, fig. 1129 (1915); Rydb., Fl. Pr. 313
Pl. 197 (1932): \V. H. Camp in Ohio Journ. Sci. xxxiii.
pt. 3, IGS (1933); S('i1£\R`I1€l' in Ohio Journ. Sci. xxxiii.
pt. ft, 289 (1933); Palme-r & Steyermark in Ann. Mo.
Bot. Gard. xxii. 195 (1935); L. E. Hicks in Am. Midl.
Nan. xviii. 785 (1937); Denm, Fl. Ind. 282 (1940); Fas-
serr, Man. Aquar. Pls. 107, figs. 20, 21, 108 (194-0)'
Plymale in Castanea, v. pt. 5, 77 (1940).
a
Very abundant Hoafiiig on sunny pond with S])iI'()(l0llL polyrrhizu.
Gordon Pond, Columbia, Boone County, MISS()URI. Alt.
ca. 200 rn.
Coll. L.C.\VHEE1.1-in (no. 47/1-4). October 5, 1939.

