232 
IOWA ACADEMY OF SCIENCES. 
556. M.jamesii T. & G. In seepage springs along the 
Iowa river; scarce. 
Gratiola. 
557. G. virginiana L. Wet ground; frequent. 
Ilysanthes. 
558. I. attenuata (Muhl.) Small. Muddy ground, about 
ponds and swamps; common. 
Veronica. 
559. V. anagallis-aquatica L. (F. anagallis L.) Fre- 
quent in streams and on muddy shores. 
560. F. serpyllifolia L. Moist ground; scarce. 
561. F. peregrina L. Moist fields and waste ground; 
abundant. 
Leptandra. 
562. L. virginica (L.) Nutt. (Veronica virginica L.) 
Meadows and borders of woods; common. 
Gerardia. 
563. G. aspera Dough Moist prairies; frequent. 
564. G. tenuifolia Vahl. Dry ground; common. 
565. G. hesseyana Brit. {G . tenuifolia macrophylla 
Benth.) With the preceding, but often on low 
ground; common. 
566. G. aiiriciilata Michx. Wet meadows; common. 
Castilleja. 
567. C. coccinea (L.) Spreng. Open woods and meadows, 
dry or wet ground; frequent. The yellow phase, 
which is by far the more plentiful, seems always 
to occur in low meadows, the red on dry, semi- 
wooded hills; no intermediate form has been 
noted. 
568. C. sessiliflora Pursh. Frequent in low prairies. 
Pedicularis. 
569. P . lanceolata Michx. Wet meadows; common. 
570. P. canadensis L. Meadows and wooded slopes; 
common. 
