C. TKIBULOIDES, Wahl. 



Frequent, especially the variety turhata. North 



Bass. 

 C. TRiBULoiDEs CRiSTATA, Bailey. 



Common. North Bass the only island. 

 C. TRIBULOIDES- REDUCTA, Bailey.* 



Florence and Huron ; rare. 

 C TRICEPS HIRSXJTA, Bailey. 



Frequent. 



C. TRICHOCARPA, Muhl. 



Huron River, Milan. The variety imberbis 



grows in Florence. Both scarce. 

 C. TRICHOCARPA ARisTATA, Bailey.* 



Huron, Castalia ; infrequent. 

 C. TYPHINOIDES, Schwein. 



East Berlin ; local. 



C. TUCKERMANNI, Boott. 



Infrequent. 



C. UTRICULATA, Boott. 



Blair Creek, Florence ; rare. The so-called 

 variety minor at Tisdell's, Vermillion ; rare. 



C. VARiA, Muhl. 

 Frequent. 



C. YIRESCENS, Muhl. 



Oxford, Huron and east; common. 



C. YIRESCENS COSTATA, Dewev. 



Berlin Heights and east; infrequent. 

 C. YiRiDULA, Michx.* ( C. FLAYA YiEiDULA, Bailey.) 

 Castalia prairie ; local. 



C. YULPINOIDEA, Michx. 



Common. 

 C. wiLDENOWii, Schkuhr. 

 Florence; rare. 



CLADIUM, P. Br. Twig Rush. 



C. TRiGLOMERATUM, Nees. (C. MARiscoiDES, Torr.) 

 Perkins, "Castalia," E. Claassen. 



