ITALIC 8.0

Myochroidea porphyrospoda (Anzi) Printzen, T. Sprib. & Tønsberg

Lichenologist, 40: 201, 2008. Basionym: Biatora porphyrospoda Anzi - Comm. Soc. Critt. Ital., 2: 13, 1864.

Synonyms: Lecidea porphyrospoda (Anzi) Th. Fr.

Distribution: N - Lomb (Hinteregger 1994, Anzi Lich. Lang. 339: Printzen 1995).

Description: Thallus crustose, episubstratic, beige, ochre or greyish brown. greenish in shaded situations, of scattered to contiguous, irregular, 0.05-0.3 mm wide, weakly to strongly convex, frequently crenate, sorediate areoles, often delimited by a whitish prothallus; soralia irregular in outline, poorly delimited, 0.4-1 mm in diam., brown in exposed parts, whitish within, appearing greenish in shade, often coalescing into a subleprose crust. Apothecia rare, biatorine, rounded to irregular in outline, sessile and constricted at base, 0.4-1.2 mm across, with a reddish brown, flat to strongly convex, often tuberculate disc, and a concolorous or paler, weakly raised, finally often excluded proper margin. Proper exciple orange-brown in outer part, colourless or pale yellow within, with small granules, of densely entangled, branched and anastomosing hyphae with slightly thickened and pigmented apical cells; epithecium pale orange brown to reddish brown, granulose, the granules sometimes streaking into the hymenium; hymenium colourless, 55-85 µm high; paraphyses sparingly branched and anastomosing, c. 1 µm thick at mid-level, the apical cells to 2.5 µm wide; hypothecium colourless or pale yellowish. Asci 8-spored, cylindrical-clavate, the I+ blue tholus with a wide, I+ dark blue tube structure that expands towards the top, without a pale axial body, approaching the Micarea-type. Ascospores 1-celled, hyaline, ellipsoid, 11.5-15.5 x (5-)6-7(-8) µm. Photobiont chlorococcoid. Spot tests: thallus K-, C-, KC-, P-, UV+ white. Chemistry: lobaric acid.

Note: a mainly boreal-montane, probably circumpolar lichen found especially on basal parts of trunks, on bark, sometimes on lignum, mostly in upland areas; probably more widespread in the Alps.

Growth form: Crustose

Substrata: bark

Photobiont: green algae other than Trentepohlia

Reproductive strategy: mainly asexual, by soredia, or soredia-like structures (e.g. blastidia)

Commonnes-rarity: (info)

Alpine belt: absent

Subalpine belt: extremely rare

Oromediterranean belt: absent

Montane belt: extremely rare

Submediterranean belt: absent

Padanian area: absent

Humid submediterranean belt: absent

Humid mediterranean belt: absent

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

Index Fungorum GBIF

Leif Stridvall http://www.stridvall.se/la/galleries.php

Author: Leif Stridvall - Source: http://www.stridvall.se/la/galleries.php