Protoblastenia lilacina Poelt & Vězda

in Vezda, Cas. slezsk. Mus. Opave, A 19: 26, 1970.
Synonyms: Biatora rupestris var. sanguinea Arnold; Protoblastenia calva var. sanguinea (Arnold) Cl. Roux; Protoblastenia rupestris var. sanguinea (Arnold) Zahlbr.
Description: Thallus crustose, endosubstratic or more rarely thinly episubstratic, continuous or finely cracked, whitish or pale grey, most often inconspicuous. Apothecia c. 40-100/cm2, 0.2-0.6 mm across, sessile to immersed in the lower fourth, not constricted at base, rarely leaving shallow pits in the rock when they fall off, with a convex, ochraceous orange, often pruinose disc and a very thin, soon excluded proper margin. Proper exciple poorly developed, of branched, parallel-radiating hyphae, colourless or patchily pale orange; epithecium orange-brown, 12-20 µm high, reacting K-, K+ darkening orange or K+ wine-red (not releasing a K+ purple-red solution); hymenium colourless to pale orange, inspersed with oil droplets, (50-)85-120 µm high; paraphyses coherent, sparingly branched and anastomosing, 2-3 µm thick at mid-level, the apical cells slightly swollen, up to 3.5 µm wide; hypothecium colourless, yellowish or often purplish red, patchily pigmented, inspersed with oil droplets, 60–120 μm high. Asci 8-spored, clavate, with a well-developed, amyloid tholus containing a more intensely amyloid, indistinct tube structure, without an ocular chamber, approximating the Porpidia- or Psora-types. Ascospores 1-celled, hyaline, broadly ellipsoid to ovoid, (8.5-)11-14(-17) x (5-)6-7.5(-8) μm, without a distinct perispore. Photobiont chlorococcoid. Spot tests: thallus K-, C-, KC-, P-; apothecia K- or K+ wine-red. Chemistry: apothecia with 1-O-methylparietin.
Growth form: Crustose endolithic
Substrata: rocks
Photobiont: green algae other than Trentepohlia
Reproductive strategy: mainly sexual
Poorly known taxon in need of further study

Commonnes-rarity: (info)

Alpine belt: absent
Subalpine belt: absent
Montane belt: very rare
Dry submediterranean belt: very rare
Humid submediterranean belt: absent
Padanian area: absent

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http://fungi.myspecies.info/taxonomy/term/7510/media - Licence: CC BY-NC 3.0 – Photo uploaded by Mark Powell


Source: http://fungi.myspecies.info/taxonomy/term/7510/media - Licence: CC BY-NC 3.0 – Photo uploaded by Mark Powell


Detail from: https://gzu.jacq.org/GZU000291958
GZU000291958 - Vězda,A. Vězda, A.: Lichenes Selecti Exsiccati 888 Date 1969-08-17 Location Croatia / Dubrovacko-Neretvanska Label Jugoslavia – Dalmatia, insula Korčula: Žrnova Banja ; Alt. 20 m - 30 m Habitat Ad lapides calcareos in margine vinearum acumulatos.