OUR AMPHIBIOUS PERSICARIAS I5 
PERSICARIA HARTWRIGHTII (A. Gray) Greene, (1904.) Leaflets 
Vola Ee pizg: 
Polygonum Hartwright A. Gray, (1870) Am. Acad. VIII. p. 294. 
Including Persicaria abscissa Greene, (1905.) Leaflets, 
Voli pr, FOS. 
Terrestrial Phase. Plant low, densely leafy, roughish pubes- 
cent or almost glabrous, from a creeping underground rootstock, 
internodes short less than 2.5 em. and naked one third their length, 
the rest invested with an appressed bristly hairy ochrea, the limb 
of which is bristly ciliate, or sometimes without limb or border: 
leaves oblong to oblong-lanceolate 8.5-12.5 cm. long, acutish at 
both ends, glabrous above to sparsely strigose, the upper surface 
- near the margin with a few hair points or often strongly but 
appressed hairy: margin appressed spinulose: lower surface 
glabrous or with a few scattered spinulose hairs along the midvein, 
lower veins and veinlets often muricate scabrous or the murications 
‘each with a long hair: peduncle of the oval spike more or less 
hirtellous; bracts strigose or hirtellous. 
Aquatic Phase not known as yet from our region. 
Specimens slightly more hairy than the type were collected 
by me in terrestrial phase at Bankson Lake, Michigan. No. 593951 
of the U. S. National Herbarum collected by O. A. Farwell, Sept. 
3, 1892, agrees better with the type except as to slight difference 
in pubescence of the peduncle. 
No. 593948 also of the U. S. National Herbarium and collected 
by the same, at Belle Isle, Mich., Aug. 1904, may also be referred 
here. 
Aquatic Phase. Weaves glabrous shiny floating, with long 
slender, petioles: leafblades tapering to the petiole, not subcordate 
or cordate as in aquatic state of other Persicarias. (See Greene, E. L. 
Peanets, Vols 1., p. 109.) | 
Hairy sterile specimens found by me in low fields and marshy 
places may possibly be referred to P. Hartwrightw. Such plants 
are invariably sterile, and even appear in cultivated fields, or along 
ditches growing from sand or mud recently cast up. I have col- 
lected such at Benton Harbor, Mich., Mishawaka, Ind., near 
and at Webster’s Crossing in a marsh north of Notre Dame. 
PERSICARIA FLUITANS (Eaton) Greene, (1904) Leaflets, Vol. I. 
p26: 
SO ld fluitans Eaton, (1840.) in Eaton and Wright N. Am, 
Botany, p. 368. 
