Lobe growth and marginal zonation in crustose lichens

Hooker, T.N.. 1980 Lobe growth and marginal zonation in crustose lichens. The Lichenologist, 12 (3). 313-323.

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Lobes of Xanthoria elegans are shown to be engulfed by more rapidly growing neighbouring lobes, thereafter ceasing to grow, and the rate of lobe engulfment increases with thallus age. Similarly, growth can cease when lobes of adjacent thalli meet. Mature central areas of eroded thalli may regenerate lobes and resume growth. In Buellia coniops, B. russa and Caloplaca cirrochrooides, peripheral concentric zonation does not always correspond to a single year's growth, and one zonation effect is correlated with an unusually severe winter.

Item Type: Publication - Article
Digital Object Identifier (DOI):
ISSN: 0024-2829
NORA Subject Terms: Botany
Date made live: 29 Aug 2019 08:36 +0 (UTC)

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