ITALIC 8.0

Cheiromycina flabelliformis B. Sutton

in Sutton & Muhr, Nord. J. Bot., 6: 834, 1986.

Synonyms:

Distribution: N - TAA (Thor & Nascimbene 2007, Nascimbene & al. 2022).

Description: Thallus crustose, thinly episubstratic or partly endosubstratic, grey-brown, uneven, corticate, 60-130 µm thick, the cortex irregular in thickness, 15-25 µm thick, of subglobose, mainly 2-2.5 µm wide cells, the hyphae in the photobiont layer thin-walled, branched, septate, hyaline, (1.5-)2-3(-4) µm thick, penetrating the outer layers of periderm cells. Conidiomata sporodochial, superficial, grey to olivaceous grey but often eroded and appearing white, pulverulent, up to 0.4 mm across and up to 0.1 mm high, initially punctiform, then circular to ellipsoid, strongly convex, solitary or sometimes in clusters of 2-5, consisting of a base of loosely aggregated, hyaline hyphae from which ascending branches bear conidia at different levels. Conidiophores hyaline, septate, irregularly and repeatedly branched, 2-2.5 µm wide towards the base, progressively wider (up to 10 µm) towards the apex, the individual cells markedly constricted at septa, the cell walls 1-2 µm thick, formed from the basal cells of the conidiomata. Conidia up to 35 x 22-35 µm, hyaline when young, turning pale brown at base at maturity, smooth, flabelliform to palmate, consisting of a globose-truncate basal cell measuring (6.5-)8.4(-9.5) µm, from which usually 2 diverging dichotomous branches arise, each of which branches again, either dichotomously or irregularly, finally producing a conidium with 4-10 arms, the arms 4-9-distoseptate, with reduced cell lumina, straight or slightly curved, obtuse, measuring (10-)13-18(-20) x 3.5-5 µm. Photobiont chlorococcoid, the cells 6-10 µm wide. Spot tests: thallus K-, C-, KC-, P-, UV-. Chemistry: without lichen substances.

Note: on acid bark, more rarely on wood in humid, sheltered situations, mostly in upland areas. The Italian sample was collected on a stump of Picea. It is included in the Italian red list of epiphytic lichens as “Data Deficient” (Nascimbene & al. 2013c).

Growth form: Crustose

Substrata: bark

Photobiont: green algae other than Trentepohlia

Reproductive strategy: mainly asexual, by conidia and thalloconidia

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

Lucia Muggia

Lucia Muggia

Lucia Muggia

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

Lucia Muggia

Lucia Muggia

Lucia Muggia

Lucia Muggia

Lucia Muggia

Lucia Muggia

Lucia Muggia