Easter Foam Lichen - Stereocaulon paschale
State Rank Reason (see State Rank above)
Known from a few locations in northwest and south-central Montana.
Thallus fruticose with erect stalks (pseudopodetia); cephalodia abundant, blue-greenish to dark brownish, scabrid, usually forming blackish, spiky clusters, containing Stigonema. Stalks to 6 cm tall, naked below with white to rosy tomentum above; phyllocladia white or gray white, occasionally rose-tinged, warty, coralloid, or rarely somewhat squamulose; and apothecia uncommon, to 3 mm diameter (McCune and Geiser 2009)
. Chemistry: Medulla K-, P-, KC+ violet or orange (McCune and Geiser 2009)
Fruticose form that grows on soil, humus or soil over rock; abundant cephalodia.
Arctic to Washington and Montana (McCune and Goward 2009).
Observations in Montana Natural Heritage Program Database
Number of Observations:
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(Observations spanning multiple months or years are excluded from time charts)
Loosely attached and growing on soil, humus, or among mosses.
Photobionts: green algae and cyanobacteria.
Reproduces sexually by spores from the apothecium.
Threats or Limiting Factors