A new lichenicolous species of Capronia (Ascomycota ...

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38 Fungal Diversity (2010) 40:37–40 Materials and methods The type material of this new species is deposited in ANES. Specimens were examined in an Olympus BH-2 research microscope fitted with Nomarski differential interference contrast optics and a drawing tube. Photomicrographs were prepared on a Nikon Eclipse 80i. Sections were prepared by hand and examined in I (Lugol’s iodine and Melzer’s iodine, with [K/I] and without pre-treatment with 10% KOH), 10% KOH alone, and water. Ascospore measurements were made in water and 10% KOH; the extreme values outside the main range are given in parentheses. The length/breadth (l/b) ratio of the ascospores is given in the same way. The key was prepared according to data from the literature and information in the files of D.L.H. Taxonomy Capronia minutosetosa Halici, D.Hawksw., A.O.Turk & Candan, sp. nov. (Figs. 1, 2) MycoBank No. MB 512398 Fig. 1 Capronia minutosetosa (holotype). a Perithecia with peridial setae on the host Chromatochlamys muscorum (see arrows). b Section showing the peridial setae. c Asci and ascospores Etymology: The specific epithet recalls the minute peridial setae of the species. Similis Caproniae peltigerae sed ascosporis pallide brunneis et 3-5-septatis, et similis C. andina sed ascosporis (19–)22–25(–28)×6.5–7 µm. Typus: Turkey: Manisa: Salihli, Western part of Demirköprü Dam, 38° 36′N, 28° 18′E, alt. 210 m, on thallus of Chromatochlamys muscorum on mosses, 15 August 2006, M. Candan (ANES 11043—holotypus). Ascomata perithecioid, ostiolate, arising singly, dispersed, superficial, immersed only at the base when mature, subglobose, black, 75–90 µm diam, smooth-walled but with non-septate or 1–3 septate unbranched dark brown setae arising from the upper part; setae smooth-walled, rounded at the apex and hardly attenuated, 13–26×2– 2.5 µm, peridial walls mainly 5–8 µm thick, composed of 7–11 layers of radially compressed angular pseudoparenchymatous cells (textura angularis), the outermost layers brown to dark brown, darkest near the ostiole, the inner layers pale brown. Hamathecium gelatinized, pseudoparaphyses absent; centrum I–. Asci obpyriform to broadly clavate, bitunicate in structure, wall apically thickened, I–, 41–52×10–15 µm, 8-spored, ascospores overlapped in the
Fungal Diversity (2010) 40:37–40 39 Fig. 2 Capronia minutosetosa (holotype). a Ascospore outlines. b Peridial setae. Bars = 10 µm asci. Ascospores pale brown, 3–5 septate, constricted at the septa, no longitudinial septa observed, some slightly curved; smooth-walled, (19–)22–25(–28)×6.5–7 µm. Anamorph not observed. Host: On the thallus of Chromatochlamys muscorum overgrowing mosses on volcanic rocks. As no damage or discolourations were observed in the host thalli, we presume the species is commensalistic. Distribution: Turkey and Spain. As the host species has a wide distribution in the North Hemisphere, it can be expected elsewhere. Notes: This new species is the first lichenicolous member of the genus Capronia growing on Chromatochlamys muscorum. Capronia minutosetosa is most similar to C. Key to the lichenicolous species of Capronia peltigerae, but as well as the different hosts, in that species the ascospores are hyaline, 1–3 septateand19–24×6–8 µm and the ascomata are larger (100–150 µm) (Hawksworth 1980). The only lichenicolous member of the genus with septate setae, C. andina, was described on Placopsis gelida and has 3-septate (rarely submuriform), grey ascospores measuring 13–19×4.5–6 µm (Etayo 2003). Amongst the lichenicolous specıes, the new species has particularly short setae, only those of C. hypotrachynae (5–35×3–5 µm) and C. pseudonormandinae (10–30×2.5–4 µm) being similar. The descriptions of all Capronia species which are not lichenicolous were also checked before describing this new species. C. apiculata, a saprophytic species on Betula glandulosa, has 6–12 septate, 32–45×3–3.5 µm ascospores (Barr 1991). C. borealis, described on Cassiope mertensiana, has (1–3–)5-septate, (10–)15–27.5×(3.5–)4.5–6 µm ascospores (Barr 1991). C. collapsa, another saprophytic species on old wood, has greyish brown, 3-septate, (10–)12–18× 3.5–5.5 µm ascospores (Barr 1991). C. obesispora, a saprophytic fungus on decaying remnants of unidentified wood, has smoky to olive-green, 3-septate, (29.5–)32.5–39(– 42)×10.5–12.5 µm ascospores. Our investigations showed that the new species was clearly distinct from all others described in Capronia. Additional specimens examined: Turkey: Manisa, Köprübaşı, West part of Demirköprü Dam, 38° 39′ N, 28° 20′ E, alt. 285 m, on thallus of Chromatochlamys muscorum on mosses, 15 August 2006, M. Candan (ANES, 11044).– Spain: Extremadura, Cáceres, Road to Alto del Portillo, mixed forest with Quercus suber, Arbutus unedo and Quercus rotundifolia, 40° 27′ N, 6° 7′ W, alt. 923 m, on thallus of Chromatochlamys muscorum on mosses, 19 September 2005, S. Pérez-Ortega (MAF). 1 Asci multispored, ascospores 3-septate, on Hypotrachyna ...............................................................C. triseptata (Diederich) Etayo 1996 1 Asci 8-spored .............................................................................2 2 (1) Ascospores constantly 1-septate, 3–5-septate, submuriform or muriform . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2 Ascospores hyaline, 1–3-septate, on Peltigera sp. .....................................................C. peltigerae (Fuckel) D.Hawksw. 1987 3 (2) Ascospores constantly 1-septate . . . . . .. . . ..........................................................4 3 Ascospores submuriform with 0–1 or 2 longitudinial septum when mature or muriform ......................5 4 (3) Ascospores hyaline or pale brown, 8–10×3.5–4 µm, on Baeomyces sp. ...............................................................C. baeomycetis Diederich 1987 4 Ascospores grey, with 2–3 guttules every cell, 15–18×3.5–5 µm, on Leptogium sp. ..........................................................C. leptogii Etayo & Diederich 2002 5 (3) Setae septate ......................................................................6 5 Setae non-septate . ..................................................................7 6 (5) Ascospores grey, 3-septate, rarely submuriform, in this case the longitiduinal septum is in the middle septum, 13– 19×4.5–6 µm, on Placopsis gelida ........................................C. andina Etayo 2003
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