Synonyms:
Ramalina dilacerata var. obtusata (Arnold) Dalla Torre & Sarnth.
Ramalina obtusata is a fruticose lichen attached at one or two points to the substrate, which in the case of these photos is volcanic rock in Ponderosa pine forest. This lichen only seems to grow a few centimeters long with flattened thalli. The thalli flare distally, with granular soredia on the undersurfaces of the broadened areas at the tip of the thalli. The thalli themselves are partially hollow with a thinly woven medulla. Apothecia were not seen. The photobiont is a Trebouxia-like single-celled green alga.
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Ramalina obtusata, on volcanic boulder, photo Russ Kleinman & Karen Blisard, Gila National Forest, Pinos Altos Range, Trout Creek near Sheep Corral Road, November 28, 2024
Ramalina obtusata, on volcanic boulder, photo Russ Kleinman & Karen Blisard, Gila National Forest, Pinos Altos Range, Trout Creek near Sheep Corral Road, November 28, 2024
Ramalina obtusata, top surface with flared distal thallus, on volcanic boulder, photo Russ Kleinman & Karen Blisard, Gila National Forest, Pinos Altos Range, Trout Creek near Sheep Corral Road, November 28, 2024
Ramalina obtusata, bottom surface of same lichen as above with flared distal thallus, on volcanic boulder, photo Russ Kleinman & Karen Blisard, Gila National Forest, Pinos Altos Range, Trout Creek near Sheep Corral Road, November 28, 2024
Ramalina obtusata, top surface of thallus branch with flared distal thallus, on volcanic boulder, photo Russ Kleinman & Karen Blisard, Gila National Forest, Pinos Altos Range, Trout Creek near Sheep Corral Road, November 28, 2024
Ramalina obtusata, bottom surface of same thallus branch as above with flared distal thallus, on volcanic boulder, photo Russ Kleinman & Karen Blisard, Gila National Forest, Pinos Altos Range, Trout Creek near Sheep Corral Road, November 28, 2024
Ramalina obtusata, cross section of partially hollow thallus with thin medulla, on volcanic boulder, photo Russ Kleinman & Karen Blisard, Gila National Forest, Pinos Altos Range, Trout Creek near Sheep Corral Road, November 28, 2024
Ramalina obtusata, cross section of partially hollow thallus with thin medulla, on volcanic boulder, photo Russ Kleinman & Karen Blisard, Gila National Forest, Pinos Altos Range, Trout Creek near Sheep Corral Road, November 28, 2024
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