Houstonia longifolia Gaertner var. longifolia . Northern Longleaf Bluet. Phen: (Apr-) Jun-Jul (-Sep). Hab: Dry sandy or rocky habitats. Dist: New England and maritime Canada west to MN and SK, south to n. NJ, PA, n. IN, n. IL.
Origin/Endemic status: Native
Synonymy: = Terrell (1959); = Houstonia longifolia Gaertn. – Terrell (1996); < Hedyotis longifolia (Gaertn.) Hook. – C, Rogers (1987); < Houstonia longifolia Gaertn. – F, G, GrPl, Il, K1, K3, K4, Mi, NE, NY, Pa; < Houstonia longifolia Gaertn. var. longifolia – Terrell (1991)
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