Xanthoparmelia camtschadalis (Ach.) Hale, 1974
| Common name | Vagabond Rockfrog | ||
|---|---|---|---|
| Code |
XANTCAM | ||
| Field Characters | Medium-sized, leafy chlorolichen. Thalli vary from unattached (vagrant), to loosely anchored with the lower lobes, to loosely attached throughout on rocks (rare habit). Lobes typically narrow, branching regularly and dichotomously, forming thalli that lie parallel to the substrate. Upper surface pale yellow, with abundant maculae that vary from highly contrasting (shade morphs) to difficult to see (paler, full-sun morph). No vegetative propagules present. Lower cortex typically brown to black, with relatively abundant, simple to sparsely branching rhizines concolorous with the lower cortex, and inrolled lobe margins that provide contrast to the lower cortex. Apothecia rare. | ||
| Similar species |
Xanthoparmelia wyomingica: lobe edges more crenulate and grasping, typically more attached to substrate, upper cortex lacking maculae, lobes not as regularly inrolled so edges typically not visible from above, narrower lobed, branching more irregular.
Xanthoparmelia chlorochroa: thalli typically entirely vagrant with wider, lobes that role into tube with little lower cortex visible; lacking maculae. Apparently rarer in AB. |
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| Ecology | Mostly terricolous on mosses, soil or litter, more rarely saxicolous. Most common in the grasslands, occasional in the mountains and southern parklands. | ||
| Chemistry | Upper cortex PD+ pale yellow or PD-, K-, C-, KC+ yellow, UV- (usnic acid). Medullary chemistry complex, variable and apparently not a good taxonomic trait, always UV-, may be PD- or PD+ yellow to red, K- or K+ yellow to dark, rusty red (norstictic acid, salazinic acid, plus accessories). AB collections TLCed: 5. | ||
| Molecular support |
Moderate at the species level. Multiple studies have found that historical morphological and chemical traits do not correspond well to molecular clades, however, X. camtschadalis had higher support and fewer polyphyletic clades than some other taxa (Leavitt et al. 2011a, b). Until more extensive molecular work is done, we continue to follow historical morphological species delimitation. | ||
| Links | |||
| Gallery |
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- Xanthoparmelia camtschadalis, southern AB
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- Xanthoparmelia camtschadalis, Burstall, SK
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- Xanthoparmelia camtschadalis, attached morph, Mattheis Ranch, AB
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- Xanthoparmelia camtschadalis, Mattheis Ranch, AB
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- Xanthoparmelia camtschadalis maculate upper cortex, Mattheis Ranch, AB
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- Xanthoparmelia camtschadalis lower cortex with inrolled lobe edges, Mattheis Ranch, AB
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- Xanthoparmelia camtschadalis maculate upper cortex, Mattheis Ranch, AB
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- Xanthoparmelia camtschadalis lower surface with inrolled lobe margins, Mattheis Ranch, AB
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- Xanthoparmelia camtschadalis, Mattheis Ranch, AB
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- Xanthoparmelia camtschadalis, Dry Island Buffalo Jump, AB
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- Xanthoparmelia camtschadalis maculate upper cortex, Donalda coulee, AB
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- Xanthoparmelia camtschadalis, Old Fort Trail, Jasper National Park, AB
