THE FLORA OF SCOTT AND MUSCATINE COUNTIES. 243 



Linaria, Tourn. 



564. L. vulgaris, Mill. Butter and Eggs. 

 Roadsides and railroad tracks ; frequent. 



Scrophularia, Tourn. Kigwort. 



565. S. nodosa, I,., var. Marilandica, Gray. 

 Woods and waste places ; common. 



Chelone, Tourn. Turtle Head. Snake Head. 



566. C. glabra, L. 



Boggy places, Muscatine county ; infrequent. 



567. C. obliqua, L. Purple Turtle Head. 

 Along Muscatine slough ; infrequent. 



Penstemon, Mitchell. Beard-tongue. 

 56S. P. pubescens, Solander. 



Dry sandy soil; frequent. 



569. P. Icevigatus, Solander, var. Digitalis, Gray. 

 Frequent in Cedar River region ; infrequent elsewhere. 



570. P. grandiflorus, N u 1 1 . 



Sandy soil ; not rare, but confined to a limited area in Mus- 

 catine Island and Cedar^River region. 

 Mimulus, L. 



571. M. ringens, L. Monkey Flower. 

 Wet places ; common. 



Conobea, Aublet. 



572. C. multifida, Benth. 



Sandy soil, banks of Mississippi ; frequent. 

 Herpestis, Gaertn. f. 



573. II. rotundifolia, Pursh. 

 Shallow pond near Muscatine. 



Gratiola, L. Hedge Hyssop. 



574. C. Virginiana, L. 



Damp places ; rather frequent. 

 Ilysanthes, Raf. 



575. / riparia, Raf. False Pimpernel. 

 Wet places ; common. 



Synthyris, Benth. 



576. S. Houghtoniana, Benih. 



Sandy soil in open woods, Cedar River region ; not rare. 



