Sheard J.W.
(1992):
The lichenized ascomycete genus Hafellia in North America,
Bryologist,
95(1): 79-87
Five species ofHafellia occur in North America; all are corticolous. Hafellia bispora
Sheard and H. fosteri Imsh. & Sheard are described for the first time. Hafellia bahiana (Malme)
Sheard, H. bahiana var. pleiotropa (Malme) Sheard, and H. callispora (Knight) Mayrh. & Sheard
are new combinations. The latter species has previously been confused in the New World with H.
parastata (Nyl.) Kalb. Hafellia bispora, H. callispora, H. fosteri, and H. parastata are closely related
and characterized by …
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