ITALIC 7.0

Sarcogyne canasiacensis (Hue) H. Magn.

in Rabenhorst's Krypt.-Fl., 2nd ed., 9, 5.1: 57, 1935. Basionym: Lecanora scabra var. canasiacensis Hue - J. Bot., Paris 5: 278, 1891.

Synonyms: Polysporina canasiacensis (Hue) Cl. Roux; Polysporina lapponica auct., non (Ach. ex Schaer.) Degel.

Distribution: N - TAA (Kantvilas 1998).

Description: Thallus crustose, episubstratic, pale grey-brown, usually starting the life-cycle on the thalli of crustose lichens. Apothecia lecideine, sessile, black to brownish black, round and convex to irregular, 0.25-0.5 mm across, dispersed or clustered, the largest ones usually forming deeply fissured agglomerations, with a black, irregularly and incompletely carbonized, often gyrose disc and a black, fissured, rough margin. Proper exciple carbonized in outer part, yellowish to colourless within; epithecium conglutinated in a dark brownish or reddish brown gel; hymenium colourless to to yellowish-orange, 75-150 µm high, often divided by sterile columns of conglutinated hyphae, usually I+ blue eventually turning red; paraphyses coherent, 1-1.5 µm thick at base, septate, hardly expanded at apex; hypothecium colourless. Asci 200-300-spored, clavate to subcylindrical, strongly thickened at apex, the apical dome K/I-, the outer coat K/I+blue. Ascospores 1-celled, hyaline, narrowly ellipsoid to subcylindrical, (2.5-)4-5.5(-6) x 1-1.5 μm. Photobiont chlorococcoid. Spot tests: thallus K-, C-, KC-, P-, UV-. Chemistry: without lichen substances.

Note: this species, whose type material is lignicolous, has been for a long time confused with Acarospora subfuscescens. Perhaps it does not belong in Sarcogyne.

Growth form: Crustose

Substrata: rocks

Photobiont: green algae other than Trentepohlia

Reproductive strategy: mainly sexual

Commonnes-rarity: (info)

Alpine belt: absent

Subalpine belt: extremely rare

Oromediterranean belt: absent

Montane belt: rare

Submediterranean belt: rather rare

Padanian area: absent

Humid submediterranean belt: rather rare

Humid mediterranean belt: rare

Dry mediterranean belt: very 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

Index Fungorum GBIF

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

Herbarium: TSB (10953)
2001/11/22
on the host, Acarospora sp.