Leaf blades (1.2-)1.5-3.6 mm wide. 2n = 40.

Fruiting mid May-early Jul. Dry to mesic, often sandy, well-drained, acidic soils in open pine and oak woodlands or cleared areas; 50-1000 m; N.B., N.S., Ont., Que.; Conn., Ky., Maine, Mass., Mich., Minn., N.H., N.J., N.Y., Pa., R.I., Vt., Wis.