THASPIUM, meadow parsnip 
Thaspium barbinode (Michaux) Nutt., p. 1142 
T. trifoliatum (L.) A. Gray, p. 1142 
var. flavum S. F. Blake 
var. trifoliatum 
TORILIS, hedge parsley 
*¢Torilis arvensis (Hudson) Link, hedge parsley, hemlock chervil 
S, M: T. japonica (Houtt.) DC.] (Howell, 1962; 
Miihlenbach, 1979 
T. japonica (Houtt.) DC., see excluded taxa 
*T. nodosa (L.) Gaertner, p. 1128 
TREPOCARPUS 
*¢Trepocarpus aethusae Nutt. ex DC. (Oskins, 1981; Doolen, 
1984) 
ZIZIA, golden Alexanders 
Zizia aptera (A. Gray) Fern., golden Alexanders, heart-leaved 
meadow parsnip, p. 1132 
Z. aurea (L.) Koch, golden Alexanders, meadow parsnip, p. 1132 
APOCYNACEAE, dogbane family 
AMSONIA, blue star 
Amsonia ciliata Walter, ciliate blue star, p. 1195 
var. filifolia Alph. Wood 
A, illustris 
S: Steyermark G: Great Plains Flora M: Mohlenbrock 
