206 
Veronica peregrina L., neckweed, purslane speedwell, p. 1356 
var. peregrina 
¢V. polita Fries, wayside speedwell [G: V. agrestis L.] (Pennell, 
1921, 1935), p. 1356 
¢V. serpyllifolia L., thyme-leaved Speedwell, p. 1354 
var. serpyllifolia 
VERONICASTRUM 
Veronicastrum virginicum (L.) Farw., culver’s root, p. 1351 
f. villosum (Raf.) Pennell [M: V. virginicum] (Pennell, 1935) 
f. virginicum 
SIMAROUBACEAE, quassia family 
AILANTHUS, tree-of-heaven 
¢Ailanthus altissima (Miller) Swingle, tree-of-heaven, stinkweed, 
Pp. 969 
S: Steyermark @: Great Plains Flora M: Mohlenbrock 
