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Key to Leucothoe
Ericaceae
Leucothoe
https://fsus.ncbg.unc.edu/main.php?pg=show-key.php&keyid=40324
1 Leaves obtuse or acute to short-acuminate; staminal filaments almost always with at least a few unicellular hairs; calyx lobes ovate-triangular to ovate or widely so, 1.2-2.3 mm wide; racemes 0.9-5.5 cm long, with 8-44 flowers; sepals ovate, with an obtuse or rounded apex; longest petioles 2-10 (-11) mm long; [Coastal Plain and lower Piedmont]
1 Leaves long-acuminate, petiole (5-) 6-16 mm long; staminal filaments merely papillose; calyx lobes ovate or ovate-triangular to oblong-triangular, 0.7-1.6 mm wide; racemes 2-10 cm long, with 17-80 flowers; longest petioles 8-15 mm long; [Mountains and upper Piedmont]