Stems several to ∞, very slender, clad in patent hairs, branched, arising from a slender branching rhizome or (occ.) stolons, forming loose patches up to c. 2 dm. diam. Lvs sessile or on petioles up to 2 mm. long; lamina (4)-7-12 × (3)-5-11 mm., gland-dotted, ± hairy; broad-ovate to broad ovate-oblong, entire or with a pair of minute notches, subtruncate at base. Fls axillary, solitary or in 2-3-fld cymes, fragrant. Peduncles slender, pubescent, up to c. 4 mm. long. Calyx us. villous, ± campanulate; teeth narrow-triangular. Corolla-lobes ± equal, white, spreading, upper ± bifid. Stamens hardly exserted.

2n = 72

n = 36

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