Lecanoropsis anoptizodes (Nyl.) Palice & Ivanovich, 2025

Ivanovich, Cristóbal, Weber, Lilith, Palice, Zdeněk, Hollinger, Jason, Otte, Volker, Sohrabi, Mohammad, Sheehy, Steve & Printzen, Christian, 2025, A taxonomic revision of the lichen genus Lecanoropsis (Lecanoraceae), Phytotaxa 695 (1), pp. 1-56 : 31-33

publication ID	https://doi.org/10.11646/phytotaxa.695.1.1
persistent identifier	https://treatment.plazi.org/id/039387EF-FFBD-C150-338B-F969FC4CFA72
treatment provided by	Felipe
scientific name	Lecanoropsis anoptizodes (Nyl.) Palice & Ivanovich
status	comb. nov.

Treatment

Lecanoropsis anoptizodes (Nyl.) Palice & Ivanovich , comb. nov. Fig. 12A & B View FIGURE 12 , 16F View FIGURE 16 .

MycoBank nº: 848535

Basionym: Lecanora anoptizodes Nyl. , Flora 65: 452 (1882).

Type:— GERMANY. Baden-Württemberg: Heidelberg, 1882, W. von Zwackh-Holzhausen 451 (H-NYL 26511= H9511409!— lectotype, here designated) ; 451 (H-NYL 26515= H9511410!— isolectotype, here designated).

Thallus endosubstratal, rarely episubstratal and forming an effuse, amorphous to somewhat granulose, beige to dark brown thallus. Photobiont a chlorococcoid/trebouxoid alga. Apothecia rounded, sometimes deformed or irregular, single and scattered or in small groups, appressed becoming sessile, (0.17–)0.25–0.37(–0.42) mm in diameter. Apothecial disc flat to weakly convex, brown to dark grey/brown to black, mainly matte to weakly glossy, epruinose. Apothecial margin when young, thick, smooth and raised. In old apothecia, thinning to becoming completely excluded and giving the apothecia a biatorine-like appearance, (0.01–)0.02–0.04 (–0.05) mm wide, whitish and darkening to beige, to brown and to dark brown. Amphithecium with a continuous algal layer without or rarely with granules. Amphithecial cortex of even width laterally and basally, gelatinized to heavily gelatinized at the base, (15–)22–25(–30) µm wide laterally, (15–)22–27(–33) µm wide basally, hyaline. Parathecium indistinct or developed into an exciple that pushes the amphithecium to a basal position, hyaline. Epihymenium faint brown to olive green, containing Cinereorufa - green. Partially covered by a thin layer of golden-brown granules sometimes streaking into hymenium. Hymenium hyaline, golden brown sclerotized spores (guttulae) present, (30–)34–37(–38) µm. Subhymenial layers hyaline, (62–)75–88(–95) µm. Paraphyses commonly branched, sometimes simple, rarely anastomosing, ca. 1.5–2 µm wide, apices not or weakly capitate, ca. 1.5–2 µm wide, apical gel sheaths 3.5 µm wide, pigmented weakly brown or hyaline. Spores ellipsoid, simple, hyaline, (7.5–)8.0–10.3(–11.5) × (2.5–)3.3–4.5(–5) µm. Conidia : Macroconidia U-shaped, 1–3 septate, 8–12 × 1.5–2 µm; leptoconidia filiform, curved, 12–15 × 0.5–1 µm; Meso- and microconidia were not found.

Chemistry: Isousnic acid.

Substrate: Lignicolous.

Ecology: A pioneer species on hard coniferous wood (spruce stump, drifted log in brook alluvium) in well-lit forests or worked wood in urban landscape. The species is often accompanied by Trapeliopsis flexuosa . The type material was collected within the city limits of Heidelberg, Germany, ca. 120 m alt. Recent specimens from the Czech Republic and Slovakia are from elevations between 600–1300 m alt.

Distribution: Central Europe.

Notes: Similar to Lecanoropsis anopta , but the two species can be differentiated by macroconidia: L. anoptizodes produces 1–3 septate, U-shaped macroconidia with acute tips, whereas L. anopta doesn’t seem to produce macroconidia. Apothecia in L. anoptizodes are smaller [(0.17–)0.25–0.37(–0.42) mm] than those of L. anopta [(0.37–)0.46–0.68(– 0.78) mm]. Finally, L. anoptizodes has been collected so far at elevations up to 1300 m in Central Europe, while L. anopta can be found up to 2600 m in a wider distributional range (Western North America and Canada, Central and Northern Europe, and in Iran).

Lecanoropsis anoptizodes also shares resemblance with L. subsaligna , but macroconidia of L. subsaligna are 20–25 µm long (up to 12 µm in L. anoptizodes ), and apothecia are paler and slightly larger [(0.35–)0.37–0.51(–0.55) mm vs. (0.17–)0.25–0.37(–0.42) mm in L. anoptizodes ]. Because of its rather dark apothecia, L. anoptizodes can be confused with Lecanora mughicola . However, L. mughicola produces flat and more angular/polygonal apothecia with persistent margins, never becoming subbiatorine, and apparently lacks macroconidia.

Selected specimens studied: CZECH REPUBLIC, South Bohemia: Šumava Mts, Prachatice, Záblatí , Kaňon Blanice Nature Reserve - the westernmost part, the valley of Blanice , open alluvial spot on the left bank of the rivulet, on hard, illuminated wood of drifted log of a conifer, 613 m alt., 48°59’11.95” N 13°54’46.48” E, Z. Palice 33844 (FR-0362765; PRA), Lecanomics Code: 1678 GoogleMaps ; GERMANY. Baden-Württemberg: Heidelberg , 1882, W. von Zwackh-Holzhausen 457 (H-NYL 26512 = H9506899) ; Am Zaune der Baumschule auf dem Sprunge, ca. 120 m, 19 September 1882, Zwackh-Holzhausen, Lich. Exs. 712 (H-NYL p.m. 3160 = H9511411) ; SLOVAKIA. Žilinský kraj: W Carpathians, Nízke Tatry Mts, Kráľova lehota, Svarín , a saw mill in the valley of Svarinka brook, 710-720 m alt., 49°00.39’ N 19°51.1’ E, 28 July 2008, P. Czarnota, A. Guttová, J. Halda & Z. Palice 12247 (FR-0264511; PRA) GoogleMaps ; W Carpathians, Veporské vrchy hills, Muránská planina NP, 1266 m alt., 48º 46’51.3” N 19º 51’24.9” E, 05 May 2010, D. Blanár, A. Guttová, J. Halda & Z. Palice 13399 (FR-0212941; PRA) GoogleMaps .