The Flora of the Cayuga Lake Basin 331 



general appearance, however, indicate a generic unity. In a family where the dif- 

 ferences are in general more marked than usual, it seems best to retain these species 

 in one genus. 



2. Pterospora Nutt. 

 1. P. andromedea Nutt. Pine Drops. 



Saprophytic under pines and in mixed woods, in light sandy or gravelly non- 

 calcareous soils ; rare. July 10-Aug. 10. 



Caroline, slope of North Pinnacle, 1885 (O. E. Pcarcc) ; West Dauby, slope of 

 Thatcher Pinnacles (FA) ; Enfield Glen, 1919; woods, n. side of Buttermilk Glen 

 (F. H. Severance, 1878; F. V. Covillc) ; Coy Glen, 1874 (D.) ; Taughannock Gorge, 

 s. side, 1882 (F. C. Curtice). 



P. E. I. to B. C, southw. to Pa., Mich., Mex., and Calif.; rare or absent on the 

 Atlantic Coastal Plain. 



In Gray's Manual, ed. 7, this plant is attributed to "hard clay soil," but the local 

 stations certainly do not indicate this type of soil. It is also said there to be "para- 

 sitic apparently on the roots of pines," though generally it is considered to be a 

 saprophyte, and its root system is that of a typical saprophyte. 



3. Chimaphila Pursh 



a. Leaves oblanceolate, green throughout. 1. C. utnbellata, 



var. cisatlantica 

 a. Leaves oblong-lanceolate or lanceolate, variegated with white. 2. C. maculata 



1. C. umbellata (L.) Bart., var. cisatlantica Blake. (See Rhodora 19:241. 1917.) 



Prince's Pine. Pipsissewa. 



Dry woods, in light sandy acid soil with chestnut and oak, very rarely in woods 

 of maple and beech; frequent. July 5-20. 



On the hills w., s., and e. of Ithaca, along the cliffs of Cayuga Lake, and in the 

 sands n. of the lake; apparently absent or nearly so in the McLean region and on 

 the clays and richer soils back from the lake shores. 



N. S. to Ga., westw. to the Pacific coast, including the Atlantic Coastal Plain. 

 Found also in Mex. and Eurasia. 



2. C. maculata (L.) Pursh. Spotted Prince's Pin*e. 



In situations similar to the preceding; rare. July 10-30. 



"East shore of Cayuga L., Ledyard, 1827, (in Herb. J. J. Thomas, 'very rare.')" 

 (D.) ; East Lansing (F. B. Hine in C. U. Herb.) ; w. shore of Cayuga Lake, in 

 Bates Woods (D.). 



Me. (?) and Mass. to Ont. and Minn., southw. to Ga. and Miss., including the 

 Coastal Plain. 



4. Pyrola (Tourn.) L. 



a. Styles straight; petals connivent; racemes secund. 1. P. secunda 



a. Styles declined ; petals spreading ; racemes not secund. 

 b. Calyx lobes ovate-triangular. 

 c. Leaves oblong-elliptiral, thin, dull ; anthers blunt. 2. P. elliptica 



c. Leaves orbicular, thick, often glossy ; anthers with neck or point. 



d. Blade small, 1-2.5 cm. wide, shorter than the petiole ; flowers greenish 

 white. 3. P. chlorantha, 



var. paucifolia 

 d. Blade larger, 2-5 cm. wide, about equaling the petiole ; flowers pink. 



4. P. asari folia, 



var. incarnata 

 b. Calyx lobes oblong ; leaves orbicular, thick, glossy ; flowers white. 



5. P. rotundifolia, 



var. americana 



