Buellia semiimmersa Imshaug in sched.

Description:
Thallus: gray, scanty, K_, I-
Apothecia: ▒immersed
Epihymenium: brown, K- N+ reddish OR green-black, K+ green
Hypothecium:
Exciple:
Ascospores: brown, 1-septate, rough, not halonate, 13-18 x 7.5-9 Ám
Conidia:

Chemistry: not tested

Description & Ecology: Campbell Island; three collections (three localities) on rock

Notes:

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