The Flora of the Cayuga Lake Basin 349 



4. C. Gronovii Willd. Common Dodder. 



Low grounds, especially about marshes ; frequent. Aug.-Sept. 



White Church; West Dan by ; Enfield Glen; Coy Glen; Inlet Marshes; Fall 

 Creek; Salmon Creek; Montezuma Marshes; Spring Lake; Junius; and elsewhere. 

 Growing on various plants. 



N. S. to Man., southw. to Fla., Tex., and Ariz., including the Coastal Plain. 



The perianth and the ovary are usually plainly glandular, and the terminal 

 translucent glands on the ovary are often large and conspicuous, which is not the 

 case in C. Cephalanthi. The plant is apparently all var. vulgivaga Engelm., and 

 according to Engelmann this is the typical form of Willdenow. 



106. POLEMONIACEAE (Phlox Family) 

 1. Phlox L. 29 



i. Plant erect or diffusely spreading ; leaves ovate-lanceolate or oblong, 2-5 cm. long. 



1. P. divaricata 

 a. Plant forming prostrate mats; leaves subulate or linear, 0.5-1.5 cm. long. 



2. P. subulata 



1. P. divaricata L. Blue Phlox. 



Rich woodlands, thickets, and ravine banks, in alluvial, clayey or loamy, more or 

 less calcareous, soils ; frequent. May-June 15. 



Absent on the more residual acid soils of the hilltops s. of Ithaca; rare in the 

 gravels of the McLean district. 



W. Que. to Minn., southw. to Fla. and La. ; rare or absent on the Coastal Plain and 

 in the Piedmont area. 



2. P. subulata L. Ground or Moss Pink. 



In gravelly, stony, or rocky thin soil, the lime requirements unknown; abundant 

 in certain localities. May. 



Crests of most of the ravines of the basin (D. !) ; cliff crests along the shores of 

 Cayuga Lake (D.\) ; brow of South Hill (£>.!) ; high hills of Danby and Caroline 

 (D.) ; rare or absent in the McLean region and on the clays and richer soils back 

 from the lake shores. 



N. Y. and N. J. to Mich., southw. to Fla. and Ky. ; less abundant on the Coastal 

 Plain. 



The large patches are very showy when in flower. 



107. HYDROPHYLLACEAE (Water-leaf Family) 

 1. Hydrophyllum (Tourn.) L. 



a. Leaves pinnately divided; peduncles longer than the adjacent petioles. 



1. H. virginianum 

 a. Leaves palmately lobed; peduncles shorter than the adjacent petioles. 



2. H. canadense 

 1. H. virginianum L. Water-leaf. 



Woodlands and thickets, in rich alluvial or loamy calcareous soil, especially in and 

 about ravines ; common. June 1-20. 

 Que. to S. Dak., southw. to S. C. and Kans. ; rare on the Coastal Plain. 



'■" P. paniculata L. and P. maculata L. are reported by Dudley as rarely escaping from cultivation. 



