ITALIC 8.0

Catillaria minuta (A. Massal.) Lettau

Hedwigia, 52: 135, 1912. Basionym: Biatorina minuta A. Massal. - Ric. Auton. Lich. Crost.: 137, 1852.

Synonyms: Biatorina arnoldii Kremp.; Biatorina arnoldii var. luteella (Nyl.) A.L. Sm.; Catillaria arnoldii (Kremp.) Th. Fr.

Distribution: N - VG (25437), Frl, Ven (Watson 2014), Lomb (Lazzarin 2000b), Emil (Fariselli & al. 2020). C - Tosc (Tretiach & al. 2008), Marc (Nimis & Tretiach 1999), Umb (Ravera & al. 2006). S - Camp (Nimis & Tretiach 2004), Pugl (Nimis & Tretiach 1999), Bas (Nimis & Tretiach 1999), Si (Nimis & al. 1994, 1996b).

Description: Thallus crustose, entirely endosubstratic, whitish or poorly evident. Apothecia lecideine, 0.2-0.3(-0.4) mm across, yellowish brown to pale reddish brown, sessile, with a concave, then flat to slightly convex disc, and an initially prominent and smooth, finally excluded proper margin which is usually paler than disc. Proper exciple pale yellow in outer part, colourless within; epithecium pale yellowish brown, K-; hymenium colourless, 45-60 µm high; paraphyses simple, the apical cells only slightly swollen, up to 2.5(-3) µm wide, weakly pigmented; hypothecium colourless to pale straw-coloured. Asci 8-spored, clavate, surrounded by a gelatinous I+ blue coat, with a well-developed I+ blue tholus, a I+ darker blue tube and a well-developed ocular chamber, approaching the Bacidia-type. Ascospores 1-septate, slightly restricted at septum, hyaline, ellipsoid to ovoid-fusiform, (10-)12-16(-18) x 4-6.5 µm, the old ones with a microrugulate surface. Photobiont chlorococcoid. Spot tests: thallus K-, C-, KC-, P-, UV-. Chemistry: without lichen substances.

Note: a mild-temperate species found on steeply inclined or rain-protected surfaces of compact limestone in sheltered situations, e.g. in narrow gorges along creeks.

Growth form: Crustose

Substrata: rocks

Photobiont: green algae other than Trentepohlia

Reproductive strategy: mainly sexual

In underhangs rarely wetted by rain

Commonnes-rarity: (info)

Alpine belt: absent

Subalpine belt: absent

Oromediterranean belt: absent

Montane belt: very rare

Submediterranean belt: rare

Padanian area: absent

Humid submediterranean belt: rare

Humid mediterranean belt: extremely rare

Dry mediterranean belt: absent

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 CC BY-SA 4.0

TSB 24243

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

Herbarium: TSB (24243)
2001/12/08

Courtesy: Olivier et Danièle Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_C/Textes_C4/Catillaria_minuta.htm

France, Combe Lavaux - Côte-d'Or
2/6/2015

Courtesy: Olivier et Danièle Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_C/Textes_C4/Catillaria_minuta.htm

France, Combe Lavaux - Côte-d'Or
2/6/2015

Courtesy: Olivier et Danièle Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_C/Textes_C4/Catillaria_minuta.htm

France, Combe Lavaux - Côte-d'Or
2/6/2015

Courtesy: Olivier et Danièle Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_C/Textes_C4/Catillaria_minuta.htm

France, Combe Lavaux - Côte-d'Or
2/6/2015