Dimelaena lichenicola is a juvenile parasite on D. oreina and D. thysanota, developing an independent brown areolate lichenized thallus on gneiss and acid rock. It differs from D. californica primarily in producing longer conidia (6.0–10.0 × 1.0 vs. 5.0–6.0 × 1.0 µm), having a reduced thallus and minute lobes, lacking a well-developed plicate margin and a prothallus, having a different host species (D. oreina and D. thrysanota vs. D. radiata), and a different habitat (montane vs. coastal). It is reported from North America (California) and Europe (Italy).
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6 August 2013
A new lichenicolous lichen from Europe and western North America in the genus Dimelaena (Physciaceae)
Kerry Knudsen,
John W. Sheard,
Jana Kocourková,
Helmut Mayrhofer
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The Bryologist
Vol. 116 • No. 3
Fall 2013
Vol. 116 • No. 3
Fall 2013
Joshua Tree National Park
Montane
parasites
taxonomy