Metzgeria lindbergii
This species is recognized by monoicous habit; usually with branchlets ventrally margins and ventral surface of midrib; hairy appendages straight, usually in pairs or sometimes single.
Thalli yellowish-green, dichotomously branched, usually with branchlets ventrally margins and ventral surface of midrib; hairy appendages straight, usually in pairs or sometimes single; midribs sparsely hairy two cells wide, with 15-20 medullary cells in cross section; thalli cells quadrate to hexagonal, thin-walled, smooth; marginal gemmae poorly developed. Monoicous. Male branches globose, hairy; Female involucres obovate; Calyptra pyriform, hairy.
On tree trunks and twigs in primary, evergreen hardwood+pine, seasonal, forest, granite bedrock, summit of Doi Pui, c. 1,685 m elevation.