Observation 86389: Rhizocarpon geographicum group

When: 2011-07-26

Collection location: Jonas Rock Slide, Jasper National Park, Alberta, Canada [Click for map]

52.0° 117.0°

Who: Chris Parrish (kitparrish)

No specimen available

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

Rhizocarpon geographicum 2.11 sh (spores with 5-10 cells)
Rhizocarpon macrosporum sh (spores with >15 cells)
Rhizocarpon riparium 0.04 sh (spores with 12-17 cells)

thallus +/- yellow
spores 1-septate

Rhizocarpon superficiale 1.49 ee
Rhizocarpon alpicola 0.11 sh
Rhizocarpon eupetraeoides 0.18 sh

thallus brown, gray, or white

Rhizocarpon disporum 2.35 rc
Rhizocarpon eupetraeum 1.18 st
Rhizocarpon geminatum rc
Rhizocarpon grande 2.39 ge
Rhizocarpon polycarpum 0.45 sh
Rhizocarpon bolanderi 8.94 rc
Rhizocarpon badioatrum sh


number = % cover on sampled rockfaces

sh sheltered rock surfaces
ee exposed edges
rc rockface centers of low slope
ge generalists

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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Created: 2012-01-15 19:36:42 PST (-0800)
Last modified: 2012-01-15 19:36:44 PST (-0800)
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