218 AMERICAN MIDLAND NATURALIST 
No. 133946 Ahlberg’s, Aug. 1865, from Upland, Scandinavia. 
The plant is aquatic with a transitional terrestrial. 
No. 45439. Mouillefarine, Tours. June 19, 1892. Aquatic. 
No. 810258. A. Moller, June 1880, from Portugal. The leaves 
are very broad, 2.7-4 cm., and 9-11 cm. wide. 
In the herbarium of the New York Botanical Garden we 
find the following: 
Rydberg’s. Aug. 1866. Skedbrack, Sweden. The leaves of 
this specimen resemble those of P. mesochora more than any 
specimen I have seen. Also Kindly’s No. 26 from the herbarium 
of the Linnaean Society. 
Carleton Curtis from Wicken Fen, Cambridge, Eng. Aug. 4, 
’96. The leaves are cordate at the base as also those of the pre- 
ceding; both aquatic. 
C. Reik’s. Aug. 1875 from Aistershaim, Upper Austria. 
Terrestrial with strigulose appressed pubescence. The leaves are 
typically long and narrow. 
No. 1264. July 30, 1827, collected near Vienna, has rather 
_ typical aquatic and terrestral plants showing the charactersitic 
perfectly glabrous smaller leaves of the aquatic. 
A specimen from Meisner’s herbarium. Sept. 1828. Collected 
at Geneva is also a good example. In the Torrey Herbarium, 
Haworth’s from England has leaves on the aquatic remarkably 
like those of P. fluttans, as also a typical terrestrial plant. 
PERSICARIA COCCINEA (Muhl.) Greene, (1904). Leaflets I. 
24 and 36. 
Polygonum coccineum Muhl. (1809) in Willd. “Enum. 
Hort. Berol. p. 428. 
Probably (?) Polygonum amphibium var. B. emersum 
C. Richard in Michx, (1803). Flor. Bor. Am. I. 240. 
Polygonum Muhlenbergit S$. Wats. (1879). Proc. Am. 
Acad. W397 .205.- 
Polygnum emersum (Michx.) Britton (1189). Trans. N. Y. 
ACA. SC, VALLE 3p; Maae 
Persicaria emersa (Michx.) Small (1903) Fl. S. E. U. S., 
Dp. 370. 
Considering this species in the limited sense apart from the 
segregates recently made, the description of the terrestrial and 
