166 
Polygonum lapathifolium L., pale smartweed [Persicaria lapathifolia 
L.) Gray; M: incl. Polygonum scabrum Moench 
(Mitchell and Dean, 1978) (note that plants attributed 
to P. scabrum were also reported for Missouri by 
Mihlenbach (1979)), p. 591 
+P. neglectum Besser, knotweed [S: Polygonum aviculare} 
and Dean, 1978; Wolf and McNeill, 1986), p 
+P. orientale L., prince’s feather, oy eorheeser te oohalatig 
[Persicaria orientalis (L.) Spach], p. 591 
P. pensylvanicum L., pinkweed, common smartweed, Pennsylvania 
smartweed [Persicaria pensylvanica (L.) M. Gémez], 
90 
p. 
var. laevigatum Fern. [S: incl. var. eglandulosum Myers] (E. 
Smith, 1988) 
f. laevigatum 
f. albineum Farw. 
var. pensylvanicum 
+P. persicaria L., lady’s thumb, heart’s ease, smartweed, heartweed 
[Persicaria vulgaris Webb & Mogq,.] (note that there is 
Sr ee surrounding the proper epithet for this 
Persicaria), p. 592 
¥ PRES (Small Robinson, knotweed [G: Polygonum 
= apace Michaux] (Wolf and McNeill, 1986), 
p. 5 
P. punctatum Elliott, en smartwe 
Small], p. 
var. ped a pay Fassett 
var. majus ontamerg, Fassett 
var. puncta 
P. Rint tee. bushy knotweed, long-fruited knotweed 
[M: incl. mum exsertum Small] (Mertens and 
Raven, ae. Wolf and McNeill, 1986), p. 584 
f. ramosissimum 
P. sagittatum L., arrow-leaved tear- 
], p. 596 
ed [Persicaria punctata (Elliott) 
thumb [Persicaria sagittata (L.) 
S: Steyermark G: Great Plains Flora M: Mohlenbrock 
