Xanthocarpia lactea auct. non (A. Massal.) A. Massal.
Framm. Lichenogr.: 25, 1855. Basionym: Callopisma ochraceum var. lacteum A. Massal. - Flora, 35: 572, 1852.
Synonyms: Blastenia lactea (A. Massal.) Trevis.; Callopisma luteoalbum var. lacteum A. Massal.; Caloplaca lactea (A. Massal.) Zahlbr.; Gyalolechia calcicola Galløe nom. inval.; Gyalolechia lactea (A. Massal.) Arnold; Placodium pyraceum var. lacteum (A. Massal.) A.L. Sm.
Description: Thallus crustose, endosubstratic, poorly visible or reduced to a few whitish granules, without a distinct prothallus. Apothecia 0.1-0.3 mm across, sessile, scattered, with a flat to slightly concave, yellow-orange disc covered in an abundant yellow pruina, and a concolorous, thin, smooth, persistent proper margin. Thalline margin poorly developed, sometimes visible only on the lower part of apothecia, finely granulose. Proper exciple prosoplectenchymatous, colourless within; epithecium brownish yellow, c. 10 µm thick, K+ red; hymenium colourless, 70-80 µm high; paraphyses simple or sparingly branched in upper part, 1.2-2 µm thick at base, the apical cells swollen, up to 5 µm wide; hypothecium colourless. Asci 8-spored, clavate, functionally unitunicate, apically thickened with a broad internal beak, the inner part of apex and external cap I+ blue, Teloschistes-type. Ascospores 2-celled, polarilocular, hyaline, ellipsoid, 11-14(-16) x 6-8.5(-9.5) µm, the equatorial thickening (“septum”) (1-)2-3(-3.5) µm (c. 1/8 of spore length). Photobiont chlorococcoid. Spot tests: apothecia K+ red. Chemistry: apothecia with parietin (major), fallacinal, emodin, teloschistin and parietinic acid (minor), corresponding with chemosyndrome A of Søchting (1997).
Growth form: Crustose endolithic
Substrata: rocks
Photobiont: green algae other than Trentepohlia
Reproductive strategy: mainly sexual
Pioneer species
Commonnes-rarity: (info)
Alpine belt: absent
Subalpine belt: absent
Montane belt: absent
Dry submediterranean belt: rare
Humid submediterranean belt: rather rare
Padanian area: absent
pH of the substrata:
1 2 3 4 5
Solar irradiation:
1 2 3 4 5
Aridity:
1 2 3 4 5
Eutrophication:
1 2 3 4 5
Poleotolerance:
0 1 2 3
Altitudinal distribution:
1 2 3 4 5 6
Rarity
absent
extremely rare
very rare
rare
rather rare
rather common
common
very common
extremely common
Loading data...
Occurrence data
Predictive map
P.L. Nimis CC BY-SA 04
TSB 5345
P.L. Nimis CC BY-SA 04
TSB 41376
P.L. Nimis CC BY-SA 04
TSB 41376
Courtesy Danièle et Olivier Gonnet - https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_X/Xanthocarpia_lactea.htm
France, session AFL 2015 - Saint-Sozy - Le Pied Saint Jean - Lot
Courtesy Danièle et Olivier Gonnet - https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_X/Xanthocarpia_lactea.htm
France, session AFL 2015 - Saint-Sozy - Le Pied Saint Jean - Lot
Courtesy Danièle et Olivier Gonnet - https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_X/Xanthocarpia_lactea.htm
France, session AFL 2015 - Saint-Sozy - Le Pied Saint Jean - Lot
Manuel Gil
Spain, Canary Islands, Lanzarote
Manuel Gil
Spain, Canary Islands, Lanzarote
Manuel Gil
Spain, Canary Islands, Lanzarote
Manuel Gil
Spain, Canary Islands, Lanzarote
Manuel Gil
Spain, Canary Islands, Lanzarote
Manuel Gil
Spain, Canary Islands, Lanzarote
Manuel Gil
Spain, Canary Islands, Lanzarote
Growth form: Crustose endolithic
Substrata: rocks
Photobiont: green algae other than Trentepohlia
Reproductive strategy: mainly sexual
Pioneer species
Commonnes-rarity: (info)
Alpine belt: absent
Subalpine belt: absent
Montane belt: absent
Dry submediterranean belt: rare
Humid submediterranean belt: rather rare
Padanian area: absent
pH of the substrata:
| 1 | 2 | 3 | 4 | 5 |
Solar irradiation:
| 1 | 2 | 3 | 4 | 5 |
Aridity:
| 1 | 2 | 3 | 4 | 5 |
Eutrophication:
| 1 | 2 | 3 | 4 | 5 |
Poleotolerance:
| 0 | 1 | 2 | 3 |
Altitudinal distribution:
| 1 | 2 | 3 | 4 | 5 | 6 |
Rarity
absent
extremely rare
very rare
rare
rather rare
rather common
common
very common
extremely common
Loading data...
Occurrence data
Predictive map
P.L. Nimis CC BY-SA 04
TSB 5345
P.L. Nimis CC BY-SA 04
TSB 41376
P.L. Nimis CC BY-SA 04
TSB 41376
Courtesy Danièle et Olivier Gonnet - https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_X/Xanthocarpia_lactea.htm
France, session AFL 2015 - Saint-Sozy - Le Pied Saint Jean - Lot
Courtesy Danièle et Olivier Gonnet - https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_X/Xanthocarpia_lactea.htm
France, session AFL 2015 - Saint-Sozy - Le Pied Saint Jean - Lot
Courtesy Danièle et Olivier Gonnet - https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_X/Xanthocarpia_lactea.htm
France, session AFL 2015 - Saint-Sozy - Le Pied Saint Jean - Lot
Manuel Gil
Spain, Canary Islands, Lanzarote
Manuel Gil
Spain, Canary Islands, Lanzarote
Manuel Gil
Spain, Canary Islands, Lanzarote
Manuel Gil
Spain, Canary Islands, Lanzarote
Manuel Gil
Spain, Canary Islands, Lanzarote
Manuel Gil
Spain, Canary Islands, Lanzarote
