Houstonia caerulea Linnaeus. Quaker Ladies, Innocence, Common Bluet, Pissabed. Phen: (Late Jan-) Apr-Jul; May-Aug. Hab: Forests, woodlands, openings, lawns, a wide variety of disturbed sites. Dist: ME, ON, and WI south to s. GA, s. AL, w. LA, and OK.
ID notes:The flowers of this species and Houstonia serpyllifolia are very similar; H. caerulea is a somewhat duller blue.
Origin/Endemic status: Native
Synonymy: = Ar, G, Il, Mi, NY, Pa, RAB, S, Tn, Va, W, WV, Terrell (1991), Terrell (1996); = Hedyotis caerulea (L.) Hook. – C, GW2; = Houstonia caerulea L. var. caerulea – F, Pease & Moore (1907); < Hedyotis caerulea (L.) Hook. – Rogers (1987); < Houstonia caerulea L. – K1, K3, K4, NE
Hover over a shape, letter, icon, or arrow on the map to see what it means.
© Richard & Teresa Ware 
© Erik Danielson 
© Edwin Bridges | Original Image ⭷
© Jim Fowler | Original Image ⭷
© Keith Bradley | Original Image ⭷
© Gary P. Fleming | Original Image ⭷
© Alan Cressler: Houstonia caerulea, Castilleja coccinea, and Packera serpenticola, Buck Creek Dunite Barrens, Nantahala National Forest, Clay County, North Carolina 2 by Alan Cressler source | Original Image ⭷