ITALIC 8.0

Rinodina canariensis Matzer, H. Mayrhofer & P. Clerc

Nord. J. Bot., 14: 105, 1994.

Synonyms:

Distribution: C - Tosc (Matzer & al. 1994). S - Si (Matzer & al. 1994).

Description: Thallus crustose, episubstratic, up to c. 0.6 mm thick, continuous, rimose or areolate, the areoles usually inflated, smooth, pale to dark grey or ochraceous, often partly white-pruinose, sometimes with an evident dark hypothallus, often starting the life-cycle on other silicicolous crustose lichens, later usually autonomous. Medulla white in upper part, yellow to reddish brown and often K+ and C+ purple-red in lower part, I- throughout. Apothecia lecanorine, 0.6-1(-1.4) mm across, subimmersed to sessile, with a flat to convex, black, epruinose or whitish-pruinose disc, and an entire, persistent thalline margin. Epithecium dark brown, rarely olivaceous or bluish green and in this case reacting N+ red, often covered with a coarsely granular epipsamma; hymenium colourless, 100-130(-150) μm high; paraphyses 1-2 μm thick at mid-level, the apical cells 4-5 μm wide, with a dark brown cap; hypothecium colourless, up to 200 μm high. Asci 8-spored, clavate, the K/I+ blue tholus penetrated by a faintly amyloid apical cushion with parallel or diverging flanks, the wall K/I-, surrounded by a K/I+ blue outer layer, Lecanora-type. Ascospores 1-septate, brown, fusiform, often curved, (15-)18-30(-32) x 9-14 μm, similar to the Pachysporaria-type, but tending towards the Physcia-type, with a finely scabrid wall and a well-developed torus, the ontogeny of type A (apical wall thickening after septum formation). Pycnidia black, immersed, rather rare. Conidia bacilliform, 3-8 x 1-1.5 μm. Photobiont chlorococcoid. Spot tests: cortex K+ yellow, C+ red, KC+ red, P+ faintly yellow; medulla K+, and C+ purple-red in lower part. Chemistry: atranorin and variable amounts of chloroatranorin, gyrophoric, lecanoric and orsellinic acids, rarely with zeorin; medulla with an unknown pigment.

Note: a Mediterranean-Macaronesian lichen found on base-rich volcanic rocks, such as andesite and basalt, more or less confined to coastal localities and to low coastal mountains, starting the life-cycle on several species of crustose lichens, especially Acarospora heufleriana, Lecanora praepostera, Ochrolechia parella, and Pertusaria pluripuncta.

Growth form: Crustose

Substrata: rocks

Photobiont: green algae other than Trentepohlia

Reproductive strategy: mainly sexual

paras crustose lichens

Commonnes-rarity: (info)

Alpine belt: absent

Subalpine belt: absent

Oromediterranean belt: absent

Montane belt: absent

Submediterranean belt: absent

Padanian area: absent

Humid submediterranean belt: absent

Humid mediterranean belt: very rare

Dry mediterranean belt: extremely rare

pH of the substrata:

1

2

3

4

5

(info)

Solar irradiation:

1

2

3

4

5

(info)

Aridity:

1

2

3

4

5

(info)

Eutrophication:

1

2

3

4

5

(info)

Poleotolerance:

0

1

2

3

(info)

Altitudinal distribution:

1

2

3

4

5

6

(info)

Predictive model

Index Fungorum GBIF

P.L. Nimis CC BY-SA 4.0

TSB 19296

P.L. Nimis; Owner: Department of Life Sciences, University of Trieste

Herbarium: TSB (19296)
2002/05/13

Manuel Gil

Spain, Canary Islands, Lanzarote

Manuel Gil

Spain, Canary Islands, Lanzarote