Hasenhuttl, G/ Poelt, J 1978: Uber die Brutkorner bei der Flechtengattung Umbilicaria. - Berichte der Deutschen Botanischen Geselschaft91: 275-296. [RLL List # 104-41 / Rec.# 7832] Keywords: UMBILICARIA/ BROODGRAINS/ NEW TAXA/ CONIDIA/ MYCOBIONT
Abstract: 24 figures. 1 table. [Authors show that the broodgrains from the undersurface and rhizomorphs of many Umbilicaria species are actually conidia of the mycobiont and their different types are specific to various sections of the genus. "From the taxonomic characteristics of the broodgrains, it is concluded that the genus Umbilicaria and the section Anthracinae are natural groups. U. cinereorufescens and U. havaasii seem to belong near U. vellea." New: Umbilicaria pallens Poelt sp. nov., and U. vellea var. dendrographa Poelt var. nov.]
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