Halospora deminuta (Arnold) Tomas. & Cif.
Arch. Bot. Ital., 28: 11, 1952. Basionym: Polyblastia deminuta Arnold - Flora, 44: 264, 1861.
Synonyms: Amphoroblastia deminuta (Arnold) Servít; Merismatium deminutum (Arnold) Cl. Roux & Nav.-Ros.; Verrucaria deminuta (Arnold) Leight.
Description: Thallus not visible, not lichenized, growing on endolithic lichens and suppressing the formation of their ascomata. Perithecia (pseudothecia) black, 0.2-0.3 mm across, mostly developing in pits left by fallen ascomata of the host lichen, not fitting in size with the holes, being much smaller. Involucrellum absent; exciple brown to dark brown throughout, K+ darker brown, faintly violet around the ostiole; hyphae surrounding exciple colourless to brownish; hamathecium of short pseudoparaphyses and periphyses forming a crown above the asci and lining the ostiolar canal; hymenial gel I+ red, K/I+ blue. Asci 8-spored, subcylindrical to narrowly clavate, thick-walled when young, without ocular chamber, K/I-. Ascospores muriform, with 3-4(-5) transverse septa and (1-)3-4(-6) longitudinal septa, brown, ellipsoid, (19.5-)20-28(-29.5) x (10-)11-15(-17) µm, 1.5-2(-2.3) times as long as wide, surrounded by a distinct, 1.5-3 µm thick halo. Photobiont absent. Spot tests: K-, C-, KC-, P-, UV-. Chemistry: without lichen substances.
Growth form: Lichenicolous fungus
Substrata: rocks
Reproductive strategy: mainly sexual
paras endolithic lichens
Commonnes-rarity: (info)
Alpine belt: absent
Subalpine belt: extremely rare
Montane belt: very rare
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
Zschacke, H. (1934) Epigloeaceae, Verrucariaceae und Dermatocarpaceae. In: Dr. L. Rabenhorst‘s Kryptogamen-Flora, Band 9, Abt. 1, Teil 1. Akademische Verlagsgesellschaft, Leipzig, 695 pp. - Public Domain
Source: Zschacke H. 1914. Die mitteleuropäsche Verrucariaceen. II. Hedwigia, 55: 286-324. Public Domain
AArn. 200: a Perithezium, b 3 Sporen.
Growth form: Lichenicolous fungus
Substrata: rocks
Reproductive strategy: mainly sexual
paras endolithic lichens
Commonnes-rarity: (info)
Alpine belt: absent
Subalpine belt: extremely rare
Montane belt: very rare
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
Zschacke, H. (1934) Epigloeaceae, Verrucariaceae und Dermatocarpaceae. In: Dr. L. Rabenhorst‘s Kryptogamen-Flora, Band 9, Abt. 1, Teil 1. Akademische Verlagsgesellschaft, Leipzig, 695 pp. - Public Domain
