802 REPORT OF STATE GEOEOGIST. 



T. hybridum L. Alsike Clover. 



Very much resembling T. repens, from which it is rarely distin- 

 guished. In certain parts of the State, notably in Kosciusko and 

 adjoining counties, it is rapidly replacing the latter form. It is 

 becoming quite common in the northern part of the State, less 

 frequent in the central portions, and is entirely absent from the 

 extreme southern counties. 



Kosciusko (Chipman); Decatur (Ballard); Xoble (Van Gorder); 

 Hamilton ("Wilson); Steuben (Bradner). 



T. repens L. White Clover. 



Common everywhere and growing under most diverse condi- 

 tions. Its distribution in our area is probably entirely due to 

 cultivation. In certain waste areas in the State, which have never 

 been cultivated, it is entirely absent, although the conditions for 

 its growth seem exceptionally favorable. Reported practically 

 from every county in the State. 



PSORALEA L. 



P. stipulata T. and G. Large-stipuled Psoralea. 



Confined to limestone rocks in the extreme southern counties 

 of the State. It occurs in Jefferson and Clark counties sparingly. 

 No other stations are reported. 



It flowers in the localities indicated in June. 



P. pedunculata (Mill.) Vail 



(P. melilotoides Michx.) 

 This form has come into our flora from the south and is con- 

 fined to the southern portion of the State. It grows in dry, 

 usually sandy soil. 



t lowering late in May or early in June. 



Jefferson (Coulter); Vigo (Blatchley); Jay, Delaware, Ran- 

 dolph, and Wayne (Phinney); Gibson and Posey (Schneck). 



P. Onobrychis Nutt. 



More generally distributed than the other species of this genus, 

 but not extending farther north than Tippecanoe and Cass coun- 

 ties. Found in moist or sandy soils, more abundant in the south- 

 ern part of its range. 



Flowers in May and June. 



Tippecanoe (Cunningham); Vigo (Blatchley); Jay, Delaware, 

 Randolph, and Wayne (Phinney); Gibson and Posey (Schneck); 

 Clark (Baird and Taylor); Carroll; Daviess (Clements); ('ass 

 (Hessler). 



