Xanthomendoza fulva (Hoffm.) Søchting, Kärnefelt & S.Y. Kondr., 2002
| Common name | Bare-bottomed Sunburst Lichen | |
|---|---|---|
| Code |
XANTFUL | |
| Field Characters | Small, leafy chlorolichen. Easily overlooked, and often occurring alongside the more common Xanthomendoza fallax. A diminutive species forming ascending thalli under 1 cm in diameter, it is characterized by small, dark-red to orange thalli with rounded or finely divided lobes 0.2-0.6 mm across that end in submarginal to labriform soralia. Lower cortex white with sparse white rhizines. | |
| Similar species |
Xanthomendoza fallax: soralia in crescent-shaped soralia, often fertile, rhizines more abundant and typically wider lobes. | |
| Ecology | Epiphytic or on downed wood. Occasional in the parkland, southern boreal, and grassland, rare in the foothills and mountain regions of Alberta. Found on boulevard trees in Edmonton’s tablelands. Given its air quality indicator value (Schulze et al. 2020), we predict this lichen is commonly overlooked (Haughland et al. 2022). | |
| Chemistry | Upper cortex PD-, K+ purple, C-, KC- (but difficult to discern due to K+ purple), UV- (variety of anthraquinones: parietin, fallacinal, emodin, teloschistin and parietinic acid by TLC according to Lindblom 2004a). Medulla typically white with all spot tests negative. | |
| Molecular support |
No new AB sequences generated. Sequences in GenBank form a well-supported clade in preliminary analyses (Haughland, unpub. data). | |
| Links | ||
| Gallery |
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- Xanthomendoza fulva
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- Xanthomendoza fulva
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- Xanthomendoza fulva
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- Xanthomendoza fulva
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- Xanthomendoza fulva
