Rhizoplaca chrysoleuca s.l. (Sm.) Zopf, 1905
| Common name | Orange Rock-posy |
|---|---|
| Code |
RHIZCHR |
| Field Characters | Leaf-like, pale chlorolichens. Thalli to 3 cm across, typically thick, unbranched, attached with a central holdfast (umbilicate). Upper cortex pale yellow, slightly shiny. Lower cortex present, smooth, black especially at the margins, and visible from above. Lacking rhizines. Vegetative propagules absent, apothecia common. Apothecia may be laminal or marginal, with a tan to salmon-pink or pink-orange colored disc. |
| Similar species & genera |
Rhizoplaca subdiscrepans: thallus of crowded, stalked lobes, appearing almost crustose. |
| Ecology | Saxicolous, commonly on siliceous rock. Common in the grasslands and mountains, rare in the parkland and shield regions of Alberta. |
| Chemistry | Cortices C–, K–, KC+ yellow, PD– (usnic acid), Medullary chemistry variable. |
| Molecular support |
No Alberta sequences generated. Until we have sequenced local material, these species concepts are adopted in the broad sense. |
| Links | |
| Gallery |
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- Rhizoplaca chrysoleuca, Mattheis Ranch, AB
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- Rhizoplaca chrysoleuca, Kamloops region, BC
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- Rhizoplaca chrysoleuca, Kamloops region, BC
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- Rhizoplaca chrysoleuca & R. melanophthalma, Donalda coulee, AB
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- Rhizoplaca chrysoleuca & R. melanophthalma, Donalda coulee, AB
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- Rhizoplaca chrysoleuca, Mattheis Ranch, AB
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- Rhizoplaca chrysoleuca & R. melanophthalma, Donalda coulee, AB
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- Rhizoplaca chrysoleuca, Great Sand Hills, SK
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- Rhizoplaca chrysoleuca, stone hut along the Red Deer River, AB
