I4 AMERICAN MIDLAND NATURALIST 
I suggest as a section of the amphibious smartweeds under the 
genus Persicaria, the name POTAMOCALLIS. 
Genus PERSICARIA Tragus, 1531 in Brunfel’s Herb. Viv. 
Icones. Brunfels. App. p. 18. (1531), also Tragus do. p. 161. (1531), 
also Pulicaria Burnfels 1531. 
Perstcaria Trew in Herb. Black (1754) Tab. 118 and 119. 
Section PoOTAMOCALLIS. 
PERSICARIA AMPHIBIA (Linn.) S. F. Gray, (1821) Nat. Arr. 
Br Pl Vol Ly) 208 
Potamogeton Dioscorides Ex Comment. Ruellii (1547). 
(See also references on p. 9) 
Potamogeton angustifolium Gerard. 821. 2 also Tabernae- 
montanus l. c. 
Phyllitis lacustis Cordus, V. Hist. (1561). 
Potamogeton (tedpvaAdAov Thalius, Sylva Hyre. (1588.) 
Potamogeiton 2. Dalechamps. also Caesalpinus. De Plantis 
PrP32. 
Potamogeton Salicis folio Bauhin, C. Pinax, 193, (1623) 
Persicaria salicis folio, Potamogiton angustifolium dicta Ray 
east. py 184. 
Persicaria major amphibia, radice perenni Plukenett, L. Alm. 
288. 
Persicaria Salicis folio perennis Hermann P. (1687) p. 488. 
Persicaria floribus pentandris digynis, corolla staminibus 
breviore Linn. Fl. Suec. p. 115. 
Persicaria florum staminibus quinis corollam superantibus, 
stylo befido. Linn. Hist. Cliff. p. 41. 
Fontalis major longifolia Parkinson J., Theat. 1254 1a. 
Potamogeton angustifoliam seu Salicis folio, nobis etc. Morison, 
hes Plant. Est) Uniys Volt 4p) 587. (775). 
Polygonum amphibium Linn., 1753. Sp. Pl. p. 361, not of 
American authors. 
Flowering specimens in the terrestrial:phase No. 2823 of the 
University Harbarium gathered in 1856 in England (Miss A. 
Smith) Seashore....(?)....Aug. 1856. A specimen which I 
studied in Dr. Greene’s herbarium is also in the terrestrial phase. 
