Trichocladium macrosporum P.M. Kirk 1981
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Descriptions
Trichocladium macrosporum P.M. Kirk 1981
Trichocladium macrosporum was described originally on dead wood from Devon, England. During my sojourn in New Zealand in 1963 I found the large conidia of the then undescribed fungus firequently on dead wood of various plants, particularly of Ripogonum scandens, but seldom in such numbers to provide adequate herbarium specimens. The transversely multiseptate conidia of T. macrosporum are massive compared with those of the type species, T. asperum Ham, which are predominantly 1 -septate and smaller, 16-25 X 10-15 um.
The roughness of the wall of conidia of T. macrosporum arises from small blister-like inflations of an outer wall layer as found in T. asperum (Hughes 1952), but in the former the inflations are soon torn so that the conidium surface appears irregularly coarse.
Conidia of T. macrosporum, and those of T. novae-zelandiae Hughes(1969), lack the germ pores which are characteristic of the conidia of T. asperum, T. canadense Hughes, and T. pyriforme Dixon.