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 Add this item to the list   829601 Original description
   
Description type:Original description 
Description:Macroscopic features Apothecia often densely gregarious on soil between shoots of Aloina ambigua; 1–2 (3) mm in diameter, first spherical, becoming cup-shaped, finally thick and discoid with a flat hymenium, sessile; with basal hyaline and flexuous anchoring hyphae; mostly with a low and narrow fimbriate margin. Hymenium varies from orange-red to reddish to scarlet, margin and outer surface are slightly paler. Microscopic features Ectal excipulum comprising a textura intricata-angularis of thin-walled cylindric cells 20–70 × 6–20 µm and thick-walled polygonal cells, 15–30 × 10–20 µm. Margo: textura prismatica with pallisade cells 25–80 × 6–17 µm. Medullary excipulum: textura intricata with thin-walled cells 13–30 x 4–8 µm. Asci operculate, unitunicate, inamyloid, cylindric, shortly bifurcate at the base, arising from perforated croziers, 8-spored, 220–400 (460) × 18–25 (28) µm. Ascospores subglobose, hyaline, uniseriate, 14–17 (17.8) × 13–16 (16.5) µm (ornamentation included), Q: 1.03–1.1 (1.15), always with a lipid drop, diam. 9–11 µm; The ascospore ornamentation consists of a fine often irregular sometimes incomplete polygonal net with 10 to 20 meshes across spore diam., meshes fairly variable in size, 0.5–3 (5) µm wide, ridges approximately 0.3–0.5 µm wide and less than 0.4 µm high, ridges can be widened up to 1 µm at meeting points. Paraphyses filiform, straight, pluriseptate, rarely branched, gradually enlarged towards the apex, terminal cell 50–90 × 5–8 µm, distinctive carotenoid pigment turning cyan to olivaceous in Lugol’s solution, without VBs. Infection L. densireticulata infects the rhizoids of Aloina ambigua. The infection structure consists of appressoria, infection pegs and haustoria. Appressoria are 8–15 µm wide and 15–32 µm long, sometimes 1 septate, usually entirely covered by a layer of accompanying hyphae, which are 4–6 µm wide. Infection pegs are usually growing from the central part of appresoria and penetrate the rhizoid wall. Haustoria are thin walled and irregular shaped, without any septae. 
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