152 
ONAGRACEAE, evening primrose family 
CALYLOPHUS, evening primrose 
[S: OENOTHERA] (Towner, 1977) 
Calylophus serrulatus (Nutt.) Raven, plains yellow primrose, 
toothed evening primrose [S: Oenothera serrulata 
Nutt.] (Towner, 1977), p. 1102 
CIRCAEA 
Circaea lutetiana L., enchanter’s nightshade, p. 1108 
ssp. canadensis (L.) Asch. & Magnus [S: C. quadrisulcata 
axim.) Franchet & Savat. var. canadensis (L.) Hara] 
(Boufford, 1982) (note that the epithet quadrisulcata 
applies to an Old World subspecies of C. Jutetiana) 
EPILOBIUM, willow herb 
Epilobium coloratum Sprengel, purple-leaved willow herb, 
cinnamon willow herb, p. 1099 
E. leptophyllum Raf., narrow-leaved willow herb, bog willow herb, 
p. 1099 
GAURA, gaura 
Gaura biennis L., see excluded taxa 
G. coccinea Pursh, scarlet gaura, p. 1107 
G. longiflora Spach, large-flowered gaura [S: G. biennis var. 
pitcheri Torrey & A, Gray] (Raven and Gregory, 
1972), p. 1107 
G. parviflora Douglas, velvety gaura [S: incl. f. glabra Munz, f. 
Seas Weath.] (Raven and Gregory, 1972), 
p. 
1972; Miihlenbach, 1979) 
S: Steyermark G: Great Plains Flora M: Mohlenbrock 
