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Species of Pilaira produce simple or branched sporangiophores that bear cutinized, apophysate sporangia apically. The entire sporangial wall detaches along a basal suture when the structure comes in contact with a solid object. Zygospores, where known, are formed on apophystate, entwined suspensors in the substrate. The zygosporangial wall is covered with undulate ornamentation and it is hyaline, whereas the zygospore is pigmented. A trophocyst is not produced.

Type species: P. anomala

Species of Pilaira:

P. anomala (Cesati) Schröter, 1889 [in Cohn’s Kryptogamen-Flora von Schlesien. III (I). Pilze, p. 211].

P. caucasica Mil’ko, 1970 (Mikol. i Fitopatol. 4:263).

P. dimidiata Grove, 1884 (J. Bot. 22:132).

P. moreauii L. Yong, 1926 ( Étude Morphologique, cytologique et microchimique d’une nouvelle Mucorinée, Pilairia moreauii, p. 4 [Latin diagnosis also in Yong, 1930, p. 742]).

P. nigrescens van Tieghem, 1875 (Ann. Sci. Nat., Bot., Sér. VI, 1:60).

Five species are recognized by Mi’ko (1974); three of these species are in culture: P. anomalaP. caucasica, and P. moreauiiPilaira anomala is the only species that is ordinarily isolated in nature.Pilaira is usually isolated from dung. Ontogeny of the anamorph and teleomorph of P. anomala have been illustrated by Benny and O’Donnell (1978).

PILAIRA van Tieghem, 1875 (Ann. Sci. Nat. Bot., Sér. 6, 1:51); 5 spp. ( @005)


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© Gerald L. Benny

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