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Josep Torres
Josep Torres

Stictis radiata

(L.) Pers., 1800

Microscopía de Stictis radiata

Study description

On very damp decaying ground wood, with apothecia 0.5 to 0.9 mm in diameter, "fish-eye" in shape, with a dark brown to black interior and a raised, lacerate, whitish margin.

Asci very elongated, cylindrical, eight-spored, 250 to 290 µm long, 8 to 10 µm wide, with spores arranged in parallel within the ascus, twisting upon maturity to acquire a slightly spiral appearance, discharging through an apical orifice to resemble an octopus or squid with 8 arms, and inamyloid in Melzer's reagent or IKI.

Paraphyses simple or sparsely branched, hyaline, only 1 to 2 µm wide, with slight apical enlargements up to 3 or 4 µm, covered by a brownish amorphous substance, projecting slightly above the asci.

Ascospores filiform, very difficult to measure, 150 to 200 µm long according to literature, 2 to 3 µm wide, multiseptate, fragmenting at maturity into segments 5.5 to 9 µm long, with abundant granular content inside.

Herbarium material available: JTP1922/23.

Geographic references

Map generated from global occurrence data from GBIF. GBIF.

Study measurements

Values in Microns (µm)
spore fragmentsN=10
Length6.605.39 - 8.99
Width2.812.23 - 3.20
Q (Me)2.401.90 - 3.51

Macroscopic gallery

Stictis radiata - 1 - IMG_8489
1 / 12Stictis radiata - 1 - IMG_8489

Microscopic gallery

Microscopía de Stictis radiata - 10 - Himenio x 400-001
1 / 32Stictis radiata - 10 - Himenio x 400-001
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