Umbilicaria microphylla (Laurer) A. Massal.
Ric. Auton. Lich. Crost.: 62, 1852. Basionym: Umbilicaria atropruinosa var. microphylla Laurer in Sturm - Deutschl. Fl., 2, 24: 13, 1832.
Synonyms: Agyrophora microphylla (Laurer) Llano; Gyrophora anthracina var. microphylla (Laurer) Rabenh.; Gyrophora microphylla (Laurer) Arnold
Distribution: N - TAA (Nascimbene & al. 2022), Lomb, Piem (Isocrono & al. 2003, 2004), VA (Isocrono & al. 2008, Favero-Longo & Piervittori 2009, Watson 2014).
Description: Thallus foliose-umbilicate, heteromerous, dorsiventral, small, to 0.5 cm in diam., 0.15-0.2 mm thick, monophyllous, but many individual thalli growing together, giving the appearance of a polyphyllous thallus, with ascending and undulating margins and black, glossy, tumid edges, attached by a black, thick central holdfast. Upper surface mouse-grey, dull, rimose, paler toward the center. Lower surface dark brown to brown-black, smooth, but often scabrous around the umbilicus. Upper cortex palisade-plectenchymatous, 10-20 µm thick; algal layer continuous; medulla white, both loose and plectenchymatous, and compact and scleroplectenchymatous, 40-70 µm thick; lower cortex paraplectenchymatous, brown, ca 20 µm thick. Apothecia very rare, black, leiodisc. Photobiont chlorococcoid. Spot tests: medulla K-, C+ red, KC+ red, P-. Chemistry: medulla with gyrophoric acid. Note: on steeply inclined, wind-exposed surfaces of hard siliceous rocks, often forming monospecific stands, with optimum above treeline, reaching the nival belt; probably restricted to the Alps in Italy.
Growth form: Foliose, umbilicate
Substrata: rocks
Photobiont: green algae other than Trentepohlia
Reproductive strategy: mainly sexual
Commonnes-rarity: (info)
Alpine belt: rare
Subalpine belt: very rare
Oromediterranean belt: absent
Montane belt: absent
Submediterranean belt: absent
Padanian area: absent
Humid submediterranean belt: absent
Humid mediterranean belt: absent
Dry mediterranean belt: absent
Predictive model
Herbarium samples
P.L. Nimis CC BY-SA 4.0
TSB 34460
P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (34460)
2002/01/15
P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (34460)
2002/01/15
Frey E. 1933. Cladoniaceae (unter Ausschluß ded Gattung Cladonia) und Umbilicariaceae. In: Rabenhrst’s Kryptogamenflora von Deutschland, Österreich und der Schweiz. 15: 1-208.
P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (34460)
2002/01/15
Growth form: Foliose, umbilicate
Substrata: rocks
Photobiont: green algae other than Trentepohlia
Reproductive strategy: mainly sexual
Commonnes-rarity: (info)
Alpine belt: rare
Subalpine belt: very rare
Oromediterranean belt: absent
Montane belt: absent
Submediterranean belt: absent
Padanian area: absent
Humid submediterranean belt: absent
Humid mediterranean belt: absent
Dry mediterranean belt: absent
Predictive model
| Herbarium samples |
Index Fungorum
GBIF
P.L. Nimis CC BY-SA 4.0
TSB 34460
P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (34460)
2002/01/15
P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (34460)
2002/01/15
Frey E. 1933. Cladoniaceae (unter Ausschluß ded Gattung Cladonia) und Umbilicariaceae. In: Rabenhrst’s Kryptogamenflora von Deutschland, Österreich und der Schweiz. 15: 1-208.
