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Physcia tribacioides Nyl.

Physcia tribacioides  Nyl.

Synonyms:

Family: PHYSCIACEAE

Habitat: Oceanic zone

Description

   Thallus foliose, irregular, elongate or rosette-shaped, 3-8 cm across, composed of lobes, tightly appressed to the substratum, 0.5-1.5 mm wide, margin indented or more or less crenulate, upper surface not distinctly white flecked, whitish-gray, gray in dry weather, pale greenish-gray, pale green in humid weather, covered with soralia, mostly marginal, farinose, globose, 0.5-1.5 mm diam., whitish in dry weather (never bluish!), yellowish-white, slighty greenish-yellow in humid weather, underside pale brown, simple whitish to brown rhizines. Apothecia very rare, sessile, 1-1.5 mm diam., disc brown-reddish, not pruinose, thalline exciple, distinct, concolourous to the thallus. Ascospores brownish, more or less polarilocular, 17-22 x 7-10 µm. Photobiont: Trebouxioid. Cortex and medulla : C-, K+ yellow, KC-, Pd-, UV-.  Thermophile, maritime and oceanic trends, on bark of tree trunks, isolated or in alignment near the sea.

N.B. Ths species seems to be expanding  owing to the global warming.





Physcia tribacioides Nyl.

Physcia tribacioides Crozon 3
Bernard BOUFFINIER

Physcia tribacioides Nyl.

Physcia tribacioides Sainte Anne la Palud 4
Bernard BOUFFINIER

Physcia tribacioides Nyl.

Physcia tribacioides Cap de la Chèvre 1
Bernard BOUFFINIER

Physcia tribacioides Nyl.

Physcia tribacioides Crozon 1
Bernard BOUFFINIER

Physcia tribacioides Nyl.

Physcia tribacioides Fertile Sainte Marie du MĂ©nez Hom 1
Bernard BOUFFINIER

Physcia tribacioides Nyl.

Physcia tribacioides Stangala 1
Bernard BOUFFINIER

Physcia tribacioides Nyl.

Physcia tribacioides Kergoat 1
Bernard BOUFFINIER

Physcia tribacioides Nyl.

Physcia tribacioides Humide Cap de la Chèvre 6
Bernard BOUFFINIER

Physcia tribacioides Nyl.

Physcia tribacioides Fertile Sainte Marie du MĂ©nez Hom 2
Bernard BOUFFINIER

Physcia tribacioides Nyl.

Physcia tribacioides Fertile Sainte Marie du MĂ©nez Hom 2
Bernard BOUFFINIER

Physcia tribacioides Nyl.

Physcia tribacioides Sainte Marie du MĂ©nez Hom 4
Bernard BOUFFINIER

Physcia tribacioides Nyl.

Physcia tribacioides Crozon 2
Bernard BOUFFINIER

Physcia tribacioides Nyl.

Physcia tribacioides Sainte Anne la Palud 3
Bernard BOUFFINIER

Physcia tribacioides Nyl.

Physcia tribacioides fertile Le Faou 1
Bernard BOUFFINIER

Physcia tribacioides Nyl.

Physcia tribacioides fertile Le Faou 2
Bernard BOUFFINIER

Physcia tribacioides Nyl.

Physcia tribacioides Landévennec 1
Bernard BOUFFINIER

Physcia tribacioides Nyl.

Physcia tribacioides Landévennec 2
Bernard BOUFFINIER

Physcia tribacioides Nyl.

Physcia tribacioides Stangala 2
Bernard BOUFFINIER

Physcia tribacioides Nyl.

Physcia tribacioides Stangala 3
Bernard BOUFFINIER

Physcia tribacioides Nyl.

Physcia tribacioides Sainte Anne la Palud 2
Bernard BOUFFINIER

Physcia tribacioides Nyl.

Physcia tribacioides Sainte Anne la Palud 1
Bernard BOUFFINIER

Physcia tribacioides Nyl.

Physcia tribacioides UV- Stangala 6
Bernard BOUFFINIER

Physcia tribacioides Nyl.

Physcia tribacioides Sainte Anne la Palud 5
Bernard BOUFFINIER

Physcia tribacioides Nyl.

Physcia tribacioides Sainte Anne la Palud 6
Bernard BOUFFINIER

Physcia tribacioides Nyl.

Physcia tribacioides Sainte Anne la Palud 7
Bernard BOUFFINIER

Physcia tribacioides Nyl.

Physcia tribacioides Sainte Anne la Palud 8
Bernard BOUFFINIER

Physcia tribacioides Nyl.

Physcia tribacioides Sainte Anne la Palud 9
Bernard BOUFFINIER



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