Anthracocarpon virescens (Zahlbr.) Breuss

Ann. naturhist. Mus. Wien, 98B: 40, 1996. Basionym: Dermatocarpon virescens Zahlbr. - Österr. bot. Z., 68: 69, 1919.
Synonyms: Catapyrenium virescens (Zahlbr.) Breuss
Distribution: S - Cal (Puntillo 1996).
Description: Thallus squamulose, brown. Squamules 2-4 mm broad, rounded to lobulate, flattened to slightly convex, smooth, scattered to contiguous on a dark hypothallus. Lower surface pale at first, but often blackening with age, attached by a mat of dark rhizohyphae and by 0.5-1.5 mm long, mostly simple, sparse, dark rhizines. Upper cortex paraplectenchymatous, lower cortex absent. Perithecia frequent, laminal, pyriform, half immersed, to 0.5 mm broad, without involucrellum, with a 30-50 μm thick, carbonaceous, entire exciple. Paraphyses absent, substituted by periphyses. Asci 8-spored, narrowly clavate, the wall I . Ascospores 1-celled, hyaline, thin-walled, very variable in shape and size, from ellipsoid to club-shaped, (13-)15-20(-23) x (6-)7-9 μm. Pycnidia laminal, immersed, to 200 μm in diam. Conidia cylindrical, (5-)6-8(-9) x 1.5 μm. Photobiont chlorococcoid. Spot tests: cortex and medulla K-, C-, KC-, P- UV-. Chemistry: without lichen substances. Note: a mainly Mediterranean lichen growing in dry grasslands on calcareous substrata.
Note: a mainly Mediterranean lichen growing in dry grasslands on calcareous substrata.
Growth form: Squamulose
Substrata: soil, terricolous mosses, and plant debris
Photobiont: green algae other than Trentepohlia
Reproductive strategy: mainly sexual

Commonnes-rarity: (info)

Alpine belt: absent
Subalpine belt: absent
Oromediterranean belt: absent
Montane belt: absent
Submediterranean belt: absent
Padanian area: absent
Humid submediterranean belt: very rare
Humid mediterranean belt: rare
Dry mediterranean belt: absent


pH of the substrata:

(info)

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5

Solar irradiation:

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5

Aridity:

(info)

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5

Eutrophication:

(info)

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5

Poleotolerance:

(info)

0

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Altitudinal distribution:

(info)

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5





P.L. Nimis CC BY-SA 04
GZU Herb.Poelt (49-89)



P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: GZU Herb.Poelt (49-89)
2003/04/28



P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: GZU Herb.Poelt (49-89)
2003/04/28
sectioned perithecia with carbonized walls