From se. Va., has the aspect of a hybrid between S. tenuifolia var. tenuifolia and the nuttallii phase of E. graminifolia, and was tentatively so considered by Fernald. Some ±similar plants from N.C. are reported to have 2n=54 chromosomes. Further study is in order.

Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.

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