162 



7. CuscuTA Gronovii Willdenow. Common dodder. 



[FiGUKK v.] 



C. Gronovii WilUlenow iu Roemer & Schultes Syst., 6 :205. 1820. 



This is tlie commonest of our Indiana species. It is freiiuently found in 

 low wet places forming large mats of entangled, yellow stems. It seems to 

 prefer Impaticns or SallT, but will utilize any host within reach having 

 been found on one occasion coiling about and penetrating the stems of 

 Equisetum. It has been reported as causing slight damage to onions 

 grown in muck soil. 



Fig. \'. — Lusfuta Gronovii. x4. 



Specimens examined : — Delaware Co., Muncie (Brady in 1896) ; St. Joseph Co., 

 Notre Dame {Niniwland 11,500), Clear Lake (Dcam 20,391) ; Olio (Wilson in 1897) ; 

 Jefferson Co., lI.iiKJVcr (Coulter in lS7(i). .Manvillr {Dram 18,78i) ; Franklin Co., 

 Brookvillc {Iham in 1903) ; Posey C-.., .Ml. \ ( riinii {lh,iii, :!.S39) ; Vigo Co., Ather- 

 ton (Beam J'lJU',) ; Dubois Co., Hum in-lniri;' {Jhum .',s,..'(;7) ; Jackson Co., Vallonia 

 (Beam 30..s'it)) ; Knu.x Co., Vollmcr Uhain ,.'(.,.i7.7) ; .Muriou Co.. Indianapolis (Yunck- 

 er in 1916) ; Porter Co., Wavciiv 1:<m<1i (Beam 29,812) ; Wayne Co., Richmond 

 (Beam 23,860); Clark Co., {Iiiam :,.)'..: & 7,ru)0), JefCersonville (Beam 23,800); 

 Harrison Co., Elizabeth (Beam :(:.s.:n : .Vdams Co., Decatur (Beam 5,361,, in part) ; 

 Whitley Co., Shriner Lake (Dmin in IMiT), I'.lue River Lake (Beam 21,696) ; Steuben 

 Co., Clear Lake (Beam in 1904). (iauv I„il<c> {Ihinn in 1906) ; Brown Co., Helmsburg 

 (Beam 12.225) ; Noble Co., Albion (Ihmii / ;,7'// ( ; Lagrange Co.. Pretty Lake (Beam 

 1-',,88S) ; Hamilton Co., Noblesvillc (Ihniii I i.l.'.D) ; Decatur Co., St. Paul (Beam 

 9,535) ; Carroll Co., Monticello (Beam 15,.i.;V). 



8. CuscuTA EpithyjMum Murray. Clover dodder. 



C. Epithymum Murray, Linn. Syst., 13 ed., p. 140, 1774. 



This species is usually found parasitic on leguminous crops, principally 



