E-Flora BC: Electronic Atlas of the Flora of British Columbia

Brodoa oroarctica (Krog) Goward
Mountain diamondback

Introduction to the Lichens

© Jim Riley  Email the photographer   (Photo ID #12473)

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Distribution of Brodoa oroarctica
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Consortium of North American Lichen Herbaria map

Species Information

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Illustration By: Trevor Goward

Small to occasionally medium stratified foliose lichens, corticate above and below, lacking soredia and isidia, lobes closely appressed to in part semi-erect, elongate-linear to elongate, averaging to 0.5–1.5 mm wide, thick. Upper surface pale grey to nearly black, bearing white angular markings/maculae. Lower surface tan or black, dull, apparently white-pruinose, lacking rhizines. Medulla white. Photobiont green. Apothecia located over upper surface; spores simple, ellipsoid, colourless, 8 per ascus.

Notes: Brodoa is an arctic-alpine genus containing three species worldwide, though only one of these occurs in B.C. Brodoa was formerly treated within Hypogymnia.
All spot tests negative.
Calycin and pulvinic dilactone.

Source: Lichens of British Columbia

Habitat / Range

Habitat: Frequent over acid rock in exposed inland alpine sites
World Distribution: circumpolar, N to AK, S to NM.

Source: Lichens of British Columbia

Synonyms and Alternate Names

Brodoa intestiniformis (Vill.) Goward
Hypogymnia encausta
Hypogymnia intestiniformis
Hypogymnia oroarctica Krog
Parmelia intestiniformis (Vill.) Ach.

Taxonomic and Nomenclatural Links

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