226 AMERICAN MIDLAND NATURALIST 
in this case from ‘‘shallow water and mud.”’ This aerial plant 
is then quite of the appearance of a terrestrial, but is, as is 
evident from the description of the habitat, a dweller of wet places. 
It may be classified as riparian, since Mr. Braenkles’ plant rose 
from shallow water. 
TERRESTRIAL PHASE. Plant always sterile, assurgent from 
a thick green prostrate stem: leaves 7—14 cm. long, 3-4.7 wide, 
oval or elliptic-oval, but for the acuminate apex, scarcely ovate, 
sometimes elliptic-oblong, (the aquatic leaves are ovate often 
broadly so) short petioled hardly 1 cm.; covered with very minute 
fine pubescence which is canescent on young foliage; somewhat 
roughish on the midrib; ochreae beset with longer appressed 
scattered hairs; stems densely leafy; internodes not over 6 
cm. long swollen near the nodes; stem commonly glabrous 
or pubesecent like the ochreae. 
As type I select no 10078 of my herbarium sent me by Dr. 
J. Lunell, and collected by him Sept, 8, 1911 at Butte, Benson 
Co., N. Dak. The plant is always evidently sterile unless growing 
in places where moisture is abundant. Another sterile terrestrial 
was sent me later by Dr. Lunell, collected in the same place 
Aug, 28, 1911, in damp places, but without visible water. 
A typical aquatic is in Mr. Chas. Deams’ herbarium, which 
he kindly sent me for examination. The plant was collected 
near Leeds, N. Dak: by Dr. Lunell,. Aug: 7; 19015 No 0e77 
in my herbarium, also collected by him Aug. 7, 1911, is singular 
in having a flowering shoot accompanied on the thick fistulous 
aquatic, by a sterile terrestrial shoot. The latter establishes 
beyond a doubt connection between the aquatic and riparian, 
and sterile terrestrial phases! In all cases except Mr. Dean’s 
specimens the aquatic foliage has disappeared almost entirely. 
PERSICARIA LONCHOPHYLLA Greene ,(1904) Leaflets Vol. I. p. 37. 
U. S. Nat. Herb. mo. 593950 O. A. Farwell’s VIII, 1892, 
C.C. Deam’s Herb. his plant from dunes 2 m, E. of Indiana 
Harbor, Lake Co. IX, 8, 1907. 
Persicaria tanaophylla. Nwd., nov. sp. 
PLANTA TERRESTRIS. 5-10 dm. vel altior e rhizomate radi- 
cante in locis subhumidis: caulis plus minusve tenuis cum internodis 
longis in aliis plantis innixus sed erectus: Folia oblonga vel 
