Notes: Location: Jonas Rock Slide, Jasper National Park, Alberta, Canada; 52°25’54.38"N, 117°24’27.02"W, el. 1612 m
Substrate and habitat: growing on boulders in an enormous quartzite sandstone rockslide in the Sunwapta River Valley, 75 km south of Jasper. The elevation of the rockslide extends from 1500 m at the river to 2200 m on the upper slopes (John, 1989, p. 105)
Elizabeth A. John, The Saxicolous Lichen Flora of Jonas Rockslide, Jasper National Park, Alberta, The Bryologist, Vol. 92, No. 1 (Spring, 1989), pp. 105-111.
Rhizocarpon of Jonas Rockslide, Jasper National Park
thallus bright yellow
spores 3-septate to muriform
thallus +/- yellow
thallus brown, gray, or white
number = % cover on sampled rockfaces
sh sheltered rock surfaces
ee exposed edges
rc rockface centers of low slope
Rhizocarpon categories from notes by Bruce Ryan.
Checklist and distributional data from Elizabeth John, 1989, p.108.
Spore data from Brodo and other sources.
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