Lyonia mariana is a so 2 m, colonial from root sprouts or rhizomes, roots associated with highly specialized ascomycota ericoid mycorrhizae, (Allen1991); bark gray.
Leaves alternate, elliptic, to 6 cm long, blunt, entire, hairy on veins below, leaf stalk to 0.4 cm.
Flowers white, vase-shaped 1.3 cm long; inflorescence elongate with flowers in small clusters along ends of stems, stalks to 2 cm.
Fruit dry, 0.6 cm, brown with pale longitudinal stripes along valve edges, urn-shaped, persistent into winter, winter buds elliptic, pinkish, about 0.2 cm long above pale triangular leaf scars ca 0.2 cm.
Wetland status: FAC-.
Frequency in NYC: Infrequent.
Habitat: Understories of undisturbed upland oak forests and oak or serpentine barrens in dry, acidic soil.