Vulpicida juniperinus (L.) J.-E. Mattsson & M. J. Lai

Nomenclatural data
Mycotaxon 49: 427, 1993. – Lichen juniperinus L., Species Plantarum: 1147, 1753. – Type: LINN 132 (lectotype). – Cetraria juniperina (L.) Ach., Meth. Lich.: 298, 1803. – Tuckermannopsis juniperina (L.) Hale, Bryologist 90: 164, 1987.
Morphology
Description – see Mattsson (1993).
Typical characters. Thallus dorsiventral, greenish yellow on both surfaces, with bright yellow medulla; soredia absent but apothecia and pycnidia common.
Chemistry
Contains usnic acid in the cortex; pinastric and vulpinic acids in the medulla; some other substances – zeorin and other triterpens – have also been detected by TLC (Mattsson 1993) but they have no taxonomic importance.
Remarks
The species is distinguished by the bright yellow medulla due to the presence of pinastric and vulpinic acids; the absence of soredia is the diagnostic character which separates this taxon from Vulpicida pinastri.
Ecology and distribution
Distributed in boreal and mountainous regions of northern Europe and north-eastern Asia (see Figs 18–20 in Mattsson 1993). In Asia this species is much rarer than V. pinastri; known from China (Jilin and Xinjiang provinces) (Wei 1991; Abbas & Wu 1998), Japan (Yoshimura 1979; Kurokawa 1991), Mongolia (Biazrov et al. 1989), and Russia (Rassadina 1950). We have not examined any specimens of V. juniperina from Tibet, but its occurrence in neighbouring areas (Xinjiang province) has been recorded in literature (Abbas & Wu 1998). It is an epiphyte that is mainly restricted to Juniperus communis in Europe and to Pinus pumila in Asia. Occasionally grows also on Betula or on calcareous soil.
Species pages available
juniperinus | pinastri
Literature
Randlane, T. & Saag, A. 2005. | Randlane, T., Saag, A. & Obermayer, W. 2001.
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