Erythronium umbilicatum C.R. Parks & Hardin ssp. monostolum C.R. Parks & Hardin. Phen: Mar-May; Apr-Jun. Hab: High elevation coves, slopes, and grassy balds, moist forests. Dist: Ssp. monostolum is endemic to the high mountains of NC and TN; it approaches the VA border and should be sought, especially in the Grayson Highlands area.
Origin/Endemic status: Endemic
Taxonomy Comments: Plants at low elevations in n. AL previously placed here uncertainly need additional study and may represent a new taxon. Colonial plants in the n. VA Blue Ridge similarly need additional study.
Other Comments: E. umbilicatum ssp. monostolum is a diploid (2n = 24).
Synonymy: = FNA26, GW1, K1, K3, Mathew (1992), Parks & Hardin (1963); < Erythronium americanum Ker Gawl. – F, G, RAB, S; < Erythronium umbilicatum C.R.Parks & Hardin – C, Tn, W