Cladonia stygia (Fr.) Ruoss

Botanica Helvetica, 95: 241, 1985. Basionym: Cladonia rangiferina f. stygia Fr. - Nov. Sched. Crit. Lich. Suec., 8-9, 3: 22, 1826.
Synonyms: Cladina stygia (Fr.) Ahti
Distribution: N - VA (TSB 38871b).
Description: Primary thallus crustose, ephemeral. Podetia ash-grey to bluish-grey, shrubby, loosely attached and dying from the base, anisotomically (i.e. main branches thicker)- tri- tetrachotomously branched, 4-10 cm tall, to 2 mm thick, the surface esquamulose, ecorticate and minutely arachnoid; terminal branchlets divaricate or unilaterally deflexed, situated around an open or closed axil; bases of podetia somewhat areolate, black with scattered white spots. Apothecia rare, terminal, brown, convex. Asci 8-spored, clavate, thickened at apex, with a K/I+ blue tholus and a K/I+ strongly blue outer gelatinous sheath, Cladonia-type. Ascospores 1-celled, hyaline, ellipsoid. Pycnidia dark, semi-immersed, on the tips of podetia; pycnidial jelly reddish. Conidia cylindrical. Photobiont chlorococcoid, Spot tests: K+ yellow, C-, KC-, P+ orange-red, UV-. Chemistry: atranorin and fumarprotocetraric acid complex.
Note: a very rare, probably declining species of subalpine Sphagnum bogs.
Growth form: Fruticose

Substrata: soil, terricolous mosses, and plant debris
Photobiont: green algae other than Trentepohlia
Reproductive strategy: mainly asexual, by thallus fragmentation

Commonnes-rarity: (info)

Alpine belt: absent
Subalpine belt: extremely 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


pH of the substrata:

(info)

1

2

3

4

5

Solar irradiation:

(info)

1

2

3

4

5

Aridity:

(info)

1

2

3

4

5

Eutrophication:

(info)

1

2

3

4

5

Poleotolerance:

(info)

0

1

2

3

Altitudinal distribution:

(info)

1

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4

5




P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (8244)
2003/03/12


Curtis Randall Björk – CC BY-SA 4.0
British Columbia, Skeena Mountains Date: 2014-09-00 Terricolous in alpine tundra


P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (8244)
2003/03/12
detail of the basis of podetium


Leif Stridvall - Source: http://www.stridvall.se/la/galleries.php


Felix Schumm- CC BY-SA 4.0
[15712], Canada. 49° 32.143' N, 92° 8.287' W. Junction of Highways #17 & 622, Ontario; 421 m. Leg. S.A. Harris 28. Juni 2004 (Nr. 4225), det. S.A. Harris.


Felix Schumm- CC BY-SA 4.0
[15712], Canada. 49° 32.143' N, 92° 8.287' W. Junction of Highways #17 & 622, Ontario; 421 m. Leg. S.A. Harris 28. Juni 2004 (Nr. 4225), det. S.A. Harris.


Felix Schumm - CC BY-SA 4.0
[20293], Finland, Koillismaa, Kuusamo, Kurvinen, ca. 3 km SE of Korpijärvi, SW shore of Hanhilampi, large, open fen (eutrophic). 27° E, 727:62. Leg. et det. T. Ahti (Nr. 20870a), 8.8.1965. Dubl. ex Museum Botanicum Universitatis Helsinki.


Felix Schumm - CC BY-SA 4.0
[20293], Finland, Koillismaa, Kuusamo, Kurvinen, ca. 3 km SE of Korpijärvi, SW shore of Hanhilampi, large, open fen (eutrophic). 27° E, 727:62. Leg. et det. T. Ahti (Nr. 20870a), 8.8.1965. Dubl. ex Museum Botanicum Universitatis Helsinki.


Felix Schumm - CC BY-SA 4.0
[20293], Finland, Koillismaa, Kuusamo, Kurvinen, ca. 3 km SE of Korpijärvi, SW shore of Hanhilampi, large, open fen (eutrophic). 27° E, 727:62. Leg. et det. T. Ahti (Nr. 20870a), 8.8.1965. Dubl. ex Museum Botanicum Universitatis Helsinki.


Felix Schumm - CC BY-SA 4.0
[20293], Finland, Koillismaa, Kuusamo, Kurvinen, ca. 3 km SE of Korpijärvi, SW shore of Hanhilampi, large, open fen (eutrophic). 27° E, 727:62. Leg. et det. T. Ahti (Nr. 20870a), 8.8.1965. Dubl. ex Museum Botanicum Universitatis Helsinki.


Felix Schumm - CC BY-SA 4.0
[20293], Finland, Koillismaa, Kuusamo, Kurvinen, ca. 3 km SE of Korpijärvi, SW shore of Hanhilampi, large, open fen (eutrophic). 27° E, 727:62. Leg. et det. T. Ahti (Nr. 20870a), 8.8.1965. Dubl. ex Museum Botanicum Universitatis Helsinki.
at: atranorin, f: fumarprotocetraric acid (maj), p: protocetraric acid (min)


Leif Stridvall
Courtesy: Anita Stridvall -Source: http://www.stridvall.se/lichens/gallery/


Leif Stridvall
Courtesy: Anita Stridvall -Source: http://www.stridvall.se/lichens/gallery/


Leif Stridvall
Courtesy: Anita Stridvall -Source: http://www.stridvall.se/lichens/gallery/