867] Polygonaceae 835 
— P.coccineum var. Muhlenbergii Meisn. = P.coccineum var. longi- 
spicatum Peck = P. coccineum var. coccineum |[Muhl.] Farwell = P. 
Muhlenbergii [Meisn.]| Wats. = P. emersum (Michx.] Britton = P. 
ierrestre B. S. P. = Persicaria emersa |Michx.] Small = P. coccinea [|Muhl.] 
Greene = P. Muhlenbergii [|Meisn.] Small = P. novae-angliae Greene). — 
Quebec; Nova Scotia; Maine; Massachusetts; Connecticut; New York. 
f. natans (Wiegand) Stanford 1. c. p. 164 (= P. coccineum var. 
aquaticum Willd. = P. Muhlenbergii f. natans Wiegand — 
Persicaria plattensis Greene = P. alismaefolia Greene). —- 
Quebec; Maine; Massachusetts; Connecticut; Dakota; 
Wyoming; New York; Colorado; California; Oregon. 
var. rigidulum (Sheldon) Stanford 1. c. p. 165 (= P.rigidulum Sheld. 
— Persicaria rigidula |Sheld.] Greene). — Ontario; Minnesota. 
var. pratincola (Greene) Stanford ]. c. p. 165 (= Persicaria pratincola 
Greene = P. spectabilis Greene = P. aboriginum Greene). — 
Dakota; Texas; Mexico; Indiana; Wisconsin; Illinois; Minnesota; 
Missouri; North Dakota; Nebraska; Mexico. 
Polygonum pennsylvanicum L. var. laevigatum Fernald f. pallescens Stanford 
Sl Es Tan VE SEC 
l. e. p. 180. — Vermont (Robinson n. 143); Massachusetts (Seymour 
n. 71); New York; Pennsylvania. 
var. durum Stanf. 1. ec. p. 180. — Florida; South Carolina; Alabama 
(Tracy n. 8057); Mississippi (Pollord n. 1301); Texas (Heller n. 4278). 
.segetum H. B. K. var. verrucosum Stanf. ]l. c. p. 181. — Guatemala 
(v. Tuerckheim n. II. 1207). 
. mexicanum Small var. omissum (Greene) Stanf. l. c. p. 183 (= P. omissum 
Greene = Persicaria omissa Greene). — Colorado; New Mexico (A. Fendler 
n. 559 [?)). 
. mississippiense Stanf. 1. c. p. 183. — Mississippi (Tracy et Lloyd n. 133, 
Tracy n. 4929). 
var. intertius Stanf. l. ec. p. 184. — Oklahoma, Texas (Tracy n. 7636). 
. amphibium var. marginatum Farwell f. hirtuosum Farwell in Pap. Michig. 
Acad. Sci. Arts and Lett. (1921) 1923. p. 93. — Michigan (Farwell n. 5620). 
. aviculare L. subsp. pulchellum (Lois.) Grande in Nuov. Giorn. Bot. Ital., 
N.S. XXXII (1925) p. 80 (= P.aviculare L. subsp. effusum [Meisn.] 
Fiori = P. arenarium [non W. et K.] Ten. = P. Bellardi All. var. effusum 
Meisn. = P. pulchellum Lois.). 
.lapathifolium L. subvar. tomentosum (Schrenk) Grande ]l. e. p. 822 (= P. 
incanum F. W. Schm. = P.lapathifolium L. var. ö. incanum K.C. Gmel. 
—= P.incanım var. salicifolium Sibth. = P. nodosum [Pers.] Poir. var. 
canescens Guss. — P. Persicaria L. y. incanum Ces., non Gr. et Godr. 
— P.tomentosum Schrank). 
. bioritsuense Ohki in Tokyo Bot. Mag. XXXIX (1925) p. 259. — Formosa. 
. buisanense Ohki 1. ce. p. 259. — Formosa. 
. dolichopodum Ohki 1. ce. p. 260. — Formosa. 
. giranense Ohki 1. c. p. 260. — Formosa. 
Kawakamii Ohki l. ce. p. 261. — Formosa. 
. kotochoense Ohki 1. ce. p. 262. — Formosa. 
.omerostromım Ohki 1. c. p. 262. — Formosa. 
. pseudo-japonicum Ohki 1. c. p. 263. — Formosa. 
. pseudo-nodosum Ohki l. c. p. 263. — Formosa. 
