ITALIC 8.0

Rinodina tephraspis (Tuck.) Herre

Proc. Wash. Acad. Sci., 12: 250, 1910. Basionym: Lecanora tephraspis Tuck. - Amer. J. Sci. Arts, ser. 2, 25: 425, 1858.

Synonyms: Rinodina arenaria (Hepp) Th. Fr.; Rinodina badiella (Nyl.) Th. Fr.; Rinodina glebulosa (Arnold) Arnold; Rinodina pannarioides Körb. ex Stein

Distribution: N - TAA (Arnold, Lich. exs. Nr. 494: UPS- L-168799), Lomb (Nascimbene & al. 2021).

Description: Thallus crustose, episubstratic, very variable, thin to thick, continuous to verrucose, subsquamulose or partly rimose-areolate, pale to dark grey or brown, often associated with cyanobacterial crusts in wet situations, sometimes delimited by a dark prothallus. Areoles sometimes sublobulate, rather loosely attached. Apothecia lecanorine, abundant, broadly attached to sessile, 0.5-1 mm across, with a a flat to convex, dark brown to black disc, and a thick thalline margin; proper exciple distinct, persistent, visible from above as an excipular ring. Thalline exciple 10-20 µm thick laterally, sometimes expanding in lower part to 20-30(-50) µm; proper exciple 10-25 µm wide laterally, expanding to 25-60 µm in upper part, often lightly pigmented; epithecium reddish brown; hymenium colourless, 80-100 µm high; paraphyses c. 1.5 µm thick at mid-level, the apical cells 4-5 µm wide, with a brown cap; hypothecium colourless to lightly pigmented, to 150 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, elongate-ellipsoid to broadly ellipsoid, 16-24 x 8-11(-14) µm, at first Physcia-type-like, finally grading into the Pachysporaria-type, with a well-developed torus and a faintly pitted wall, the ontogeny of type A (apical wall thickening after septum formation). Photobiont chlorococcoid. Spot tests: K- or K+ faintly yellow, C- or C+ pink, KC- or KC+ pink, P- (reactions best seen under the microscope on thick sections). Chemistry: with zeorin and variable, usually low amounts of 5-0-methylhiascic and lecanoric acids.

Note: on siliceous rocks in upland areas, in moist and often shaded situations such as near waterfalls, rapids, gorges and shores of lakes, often associated with cyanobacteria (Stigonema).

Growth form: Crustose

Substrata: rocks

Photobiont: green algae other than Trentepohlia

Reproductive strategy: mainly sexual

Commonnes-rarity: (info)

Alpine belt: very rare

Subalpine belt: very rare

Oromediterranean belt: absent

Montane belt: extremely rare

Submediterranean belt: absent

Padanian area: absent

Humid submediterranean belt: absent

Humid mediterranean belt: absent

Dry mediterranean belt: absent

pH of the substrata:

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5

(info)

Solar irradiation:

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Aridity:

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Eutrophication:

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Poleotolerance:

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(info)

Altitudinal distribution:

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Predictive model

Index Fungorum GBIF

Andrew Khitsun – CC BY-SA NC

United States, Wisconsin, Adams, Quincy Bluff State Natural Area 43.867494 -89.877424 +-301m. WGS84
Source: http://lichenportal.org/portal/collections/individual/index.php?occid=3426454