The Flora of the Cayuga Lake Basin 89 



11a. P. Lindheimeri Nash, var. fasciculatum (Torr.) Fernald. (See Rhodora 



23 : 223. 1921. P. huachucae and var. silvicola of Gray's Man., ed. 7. P. tenncs- 



seense, in small part, of Gray's Man. P. dichotomum, var. pubescens, in part at 



least, of Cayuga Fl.) 



In situations similar to the preceding, though often in more acid soils ; common. 



June 20- Aug. 10. 



Newf. to B. C, southw. to Fla. and s. Calif., including the Atlantic Coastal Plain. 

 Three forms are found in New York State : (a) with leaves hairy both above and 

 beneath; (b) with leaves hairy beneath but not above; and (c) with leaves glabrous 

 on both faces. 



lib. P. Lindheimeri Nash, var. implicatum (Scribn.) Fernald. (P. implicatum of 

 Gray's Man., ed. 7. P. dichotomum, var. pubescens, in part, of Cayuga Fl.) 



In situations similar to the last-named ; frequent. 



North Spencer; Cayuta Ravine; South Hill; hilltop n. of Caroline Center; Ring- 

 wood ; McLean station and around McLean Bogs ; near Townley Swamp ; n. w. of 

 Grotto ; n. w. of Waterloo ; n. of Montezuma village. 



Newf. to Wis., southw. to N. Y. and Iowa. 



More distinct than the other varieties, and more uniform. 



12. P. villosissimum Nash. 



Dry sandy sterile woods and hillsides, in acid soils ; rare. June 10-July 10. 



Junius, n. e. and s. of the peat bogs and e. of the marl ponds, locally abundant 

 (first collection E. M. Cipperly, 1905). 



Mass. to Minn., southw. to Fla. and Tex., including the Coastal Plain. 



Possibly not specifically distinct from P. Lindheimeri Nash, as its chief point of 

 difference is the large spikelets which grade into those of P. Lindheimeri. 



13. P. tsugetorum Nash. 



Dry sandy or gravelly open woods, in acid soils ; rare. July-Aug. 

 W. slope of Thatcher Pinnacles, 1916 (F. P. Metcalf) ; field s. w. of Junius bogs, 

 1919 (A. J. E., K. M. W., & L. F. Randolph). 

 Me. to 111., southw. to Va. and Tenn., including the Coastal Plain. 

 Perhaps only varietally distinct from P. hcterophyllum. 



14. P. umbrosum Le Conte. (See Rhodora 14:173. 1912. P. Ashei Pearson. 

 P. nervosum of Cayuga Fl.) 



Dry sandy or gravelly open woodlands near the ravines, probably in acid soil ; 

 infrequent. July. 



Near foot of hill, state road, n. of Enfield Glen ; Coy Glen ; near South Hill 

 Marsh (D.) ; near White Church (D.) ; Cascadilla woods (D.) ; Fall Creek woods 

 (D.). 



Mass. to Mich., s. to Fla., Mo., and Miss., including the Coastal Plain. 



Dudley's plants listed as P. nervosum were probably of this species, though speci- 

 mens so named by him have not been seen. A specimen of this species in the C. U. 

 Herb., collected by Dudley in Fall Creek Gorge, is labeled P. pauciflorum Ell. The 

 type specimen of P. Ashei was collected by Ashe at Ithaca, July, 1898. 



15. P. sphaerocarpon Ell. (P. microcarpum, var. sphaerocarpon, of Cayuga Fl.) 

 Borders of dry sandy woodlands and thickets, ' in acid chestnut soils ; rare. June 



25-July. 



Woods near the marl ponds and also near Pout Pond, Junius ; " woods near the 

 road between the W. Junius ponds and Geneva" (D.) ; Junius (House). 



Vt. to 111., southw. to Fla., Mex., and Cent. Am. ; common on the Atlantic Coastal 

 Plain. 



