Lecidea diducens Nyl.
Flora, 48: 148, 1865.
Synonyms: Lecidea auriculata var. diducens (Nyl.) Th. Fr.; Lecidea auriculata var. subfoederata Vain.; Lecidea sarcogyniza Nyl.
Description: Thallus crustose, endosubstratic or very thinly episubstratic and grey-white, without a distinct prothallus. Medulla I+ intensively violet-blue (but usually very thin and reaction difficult to observe). Apothecia lecideine, black, sessile and constricted at base, round or irregular in outline, sometimes confluent, 0.4-0.8(-1.5) mm across, with a flat, mostly epruinose disc and a prominent, rather thick, persistent proper margin. Proper exciple of intricate-radiating hyphae, 100-130 µm wide laterally, extending below the hypothecium, dark brown to violet-brown in the 15-22 µm thick outer part, paler and inspersed with small crystals within, C+ red; epithecium olive-black, blue-green or blue-black, c. 10 µm high; hymenium colourlessto pale green, (30-)35-50(-55) µm high; paraphyses coherent, mostly simple, 2-2.5 µm thick at mid-level, the apical cells 3.5-4 µm wide; hypothecium pale brown to colourless, often rgeenish in upper part, with a thick medulla. Asci 8-spored, narrowly clavate, thick-walled, with a K/I+ pale blue tholus and a strongly amyloid, thin apical cushion, surrounded by a I+ blue outer layer, Lecidea-type. Ascospores 1-celled, hyaline, narrowly ellipsoid with obtuse ends, (5-)7-11(-12) x (1.7-)2-3(-3.4) µm, 2.5-4.1 times as long as wide. Pycnidia black, weakly graphidioid. Conidia 11-16 x c. 1 µm. Photobiont chlorococcoid. Spot tests: thallus and medulla K-, C-, KC-, P-. Chemistry: 2'-0-methylanziaic acid in apothecia, confluentic acid in thallus.
Growth form: Crustose
Substrata: rocks
Photobiont: green algae other than Trentepohlia
Reproductive strategy: mainly sexual
Commonnes-rarity: (info)
Alpine belt: rather rare
Subalpine belt: very rare
Montane belt: absent
Dry submediterranean belt: absent
Humid submediterranean belt: absent
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
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Occurrence data
Predictive map
Einar Timdal - Source: http://nhm2.uio.no/lav/web/index.html - CC BY-NC
Curtis Randall Björk – CC BY-SA 4.0
Northwest Territories, near MacKay Lake Date: 2011-08-00 On pebble, gravelly, windblown ridgetop in brushy tundra
Growth form: Crustose
Substrata: rocks
Photobiont: green algae other than Trentepohlia
Reproductive strategy: mainly sexual
Commonnes-rarity: (info)
Alpine belt: rather rare
Subalpine belt: very rare
Montane belt: absent
Dry submediterranean belt: absent
Humid submediterranean belt: absent
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
Einar Timdal - Source: http://nhm2.uio.no/lav/web/index.html - CC BY-NC
