ITALIC 8.0

Ramalina rosacea (A. Massal.) Hepp

Flecht. Eur.: nr. 356, 1857. Basionym: Ramalina polymorpha var. rosacea Schaer. ex A. Massal. - Sched. Crit., 11: 157, 1856.

Synonyms: Ramalina bourgaeana var. morisiana Bagl.; Ramalina bourgeana auct. ital. p.p.

Distribution: C - Sar. S - Si.

Description: Thallus fruticose, consisting of greenish to greenish grey, 0.2-5 cm wide and 1-8 cm long, cuneate, rather rigid, smooth or weakly reticulately ridged, simple or sparingly branched, erect laciniae forming rosettes or tufts, without pseudocyphellae. Cortex 2-layered, the outer part paraplectenchymatous, the inner part of discontinuous cartilaginous chondroid strands; medulla white, compact. Apothecia lecanorine, to 1 cm across, mostly marginal and apical, with a concave to flat, greenish disc and a smooth to weakly reticulately ridged, thick thalline margin. Epithecium pale brownish-olive; hymenium and hypothecium colourless; paraphyses thick-walled, richly branched in upper part. Asci 8-spored, clavate to cylindrical-clavate, the apical dome K/I+ dark blue with a pale, conical-pointed apical cushion (axial mass) never penetrating through the entire d-layer, the wall K/I-, but the thin outer gel K/I+ blue, Bacidia-type. Ascospores 1-septate, hyaline, ellipsoid, slightly curved, 10-14 x 3-5 μm. Pycnidia marginal and laminal, with pale ostioles. Photobiont chlorococcoid. Spot tests: cortex K-, C-, KC+ pale yellow, P-; medulla K+ (often faintly) yellow sometimes turning red, C-, KC-, P+ yellow-orange, UV-. Chemistry: cortex with usnic acid; medulla with bourgeanic, norstictic, stictic and cryptostictic acids, PCR-1 and triterpenes.

Note: a Mediterranean species found on coastal siliceous rocks subject to maritime winds; related to R. bourgaeana, but chemically different.

Growth form: Fruticose

Substrata: rocks

Photobiont: green algae other than Trentepohlia

Reproductive strategy: mainly sexual

Poorly known taxon in need of further study

Taxon bound to maritime-coastal situations

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: 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

TSB 10078

TSB 10078

TSB 40121