ITALIC 7.0

Clavascidium semaforonense (Breuss) M. Prieto

in Prieto & al., Am. J. Bot., 99: 28, 2012. Basionym: Catapyrenium semaforonense Breuss - Stapfia, 23: 112, 1990.

Synonyms: Dermatocarpella yunnana H. Harada & Li-S. Wang; Endopyrenium hepaticum f. nigratum Müll. Arg.; Placidium semaforonense (Breuss) Breuss

Distribution: C - Sar. S - Pugl.

Description: Thallus squamulose, pale to dark brown, often grey-pruinose at margins, dull. Squamules 3-7 mm broad, 0.3-0.55 mm thick, rounded to lobulate, concave to slightly convex, smooth, with an undulate, mostly up-turned margin, scattered to contiguous, not imbricate. Lower surface pale, but often becoming dark with age, attached by dichotomously branched, up to 10 mm long and up to 0.25 mm thick, robust but fragile, pale rhizines and by 3-5.5 µm thick, colourless rhizohyphae. Upper cortex paraplectenchymatous, 50-110 μm thick; medulla with elongated cells running horizontally in upper part, mith more spherical cells in lower part; lower cortex poorly differentiated from the medulla, with cells not arranged in vertical rows. Perithecia frequent, laminal, immersed in the squamules, globose to pyriform, up to 0.5 mm in diam., without involucrellum. Exciple pale throughout; hymenium K/I+ blue; paraphyses absent, substituted by periphyses. Asci 8-spored, subcylindrical, thin-walled, I-, without a tholus. Ascospores 1-celled, hyaline, broadly ellipsoid, thin-walled, uniseriately arranged, (12-)14-18(-19) x (7-)7.5-9(-10) μm. Pycnidia black, marginal, immersed. Conidia ellipsoid, 3-4.5 x 1.5-2 μm. Photobiont chlorococcoid. Spot tests: cortex and medulla K-, C-, KC-, P-, UV-. Chemistry: without lichen substances.

Note: a Macaronesian-Mediterranean to Irano-Turanic terricolous lichen, also known from on fine-sandy soils in open, dry Mediterranean grasslands and garrigues. See also note on the genus.

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: absent

Humid mediterranean belt: very rare

Dry mediterranean belt: rare

pH of the substrata:

1

2

3

4

5

(info)

Solar irradiation:

1

2

3

4

5

(info)

Aridity:

1

2

3

4

5

(info)

Eutrophication:

1

2

3

4

5

(info)

Poleotolerance:

0

1

2

3

(info)

Altitudinal distribution:

1

2

3

4

5

6

(info)

Predictive model

Herbarium samples

P.L. Nimis; Owner: Department of Life Sciences, University of Trieste

Herbarium: TSB (7594)
2001/12/08

P.L. Nimis; Owner: Department of Life Sciences, University of Trieste

Herbarium: TSB (7594)
2001/12/08