Melaspileella proximella

Melaspileella proximella (Nyl.) Boud., Hist. Classif. Discomyc. Europe: 182. 1907. [pdf]

MycoBank MB811374

AUTHOR: Olariaga I.

Arthonia proximella Nyl., Lich. Scand.: 262. 1861. [pdf]. Typification: Ertz & Diederich, Fungal Diversity 71: 161. 2014. [pdf]

Catillaria proximella (Nyl.) Th. Fr., Nova Acta Regiae Soc. Sci. Upsal. ser. 3, 3: 305. 1861. [pdf]

Buellia proximella (Nyl.) Rabenh.,  Krypt.-Fl. Sachsen 2(1): 183. 1870. [pdf]

Caldesia proximella (Nyl.) Trevis., Hedwigia 10: 153. 1871. [pdf]

Coniangium proximellum (Nyl.) Hellb., Nerik. Laffl.: 112. 1871. [pdf]

Melaspilea proximella (Nyl.) Nyl. in Norrlin, Not. Sällsk. Fauna Fl. Fenn. Förh. 13: 342. 1873. [“1871-1874”]. [pdf]

Celidium proximellum (Nyl.) P. Karst., Acta Soc. Fauna Fl. Fenn. 2(6): 164. 1885. [“1881-1885”]. [pdf]

= Celidium proximellum var. uralense Naoumoff, Bull. Soc. Mycol. France 30(3): 384. 1914. [“uralensis”]. [pdf]*

= Banhegyia uralensis (Naoumoff) Kohlm., Trans. Brit. Mycol. Soc. 50(1): 138. 1967. [pdf]

= Banhegyia setispora L. Zeller & Tóth, Sydowia 14: 327. 1960. [pdf]**

Lecidea proximella Nyl., Herb. Mus. Fenn.: 90. 1859. [nom. inval., nom. nudum]. [pdf]

 

*Synonym based on the revision of the protologue.

**Synonym based on Ertz & Diederich (Fungal Diversity 71: 161. 2014) [pdf]

 

Taxonomic classification

phy Ascomycota

sbp Pezizomycotina

cls Dothideomycetes

sbc Incertae Sedis

ord Eremithallales

fam Melaspileaceae

gen Melaspileella

sp Melaspileella proximella

Description

Ascomata single or gregarious in groups, apothecioid, 0.15-0.4 mm of diameter, initially closed and immersed, later erumpent and opened, sessile, hymenium usually concave or plane, black, outline circular, 0,1-0.15 mm tall. Margin sometimes ruptured in triangular lobes, black.

Excipulum pseudoparenchymatous, formed by isodiametric cells, thick-walled, hyaline, 4-6 µm diam, of textura globulosa-angularis, 35-50 µm thick. Ectal excipulum layer dark brown,  formed by similar cells as in the excipulum, the outermost ones covered by dark brown granules that dissolve in KOH. Hamathecium composed of paraphyses, septate, hyaline, 1-2 µm broad, embedded in a yellowish brown gel, with apexes broader, up to 3.5 µm wide. Asci broadly clavate, shortly pedunculate, bitunicate (dehiscence mecanism not observed), with an ocular chamber in the apical dome, especially in immature asci, usually 6-8-spored, (40-)50-58 x 30-35 µm. Ascospores irregularly bi or triseriate, obovate, upper cell normally somewhat broader,  1-septate, constricted at the septum, with 1-3 large guttules, usually with 4-8 hyaline setulae at both poles, smooth, hyaline, pale brown, with asperulate surface and thick-walled when overmature, 17-23 x 7.5-11 µm. No parts staining blue in oidine even after a KOH pretreatment.

Habitat and distribution: Melaspileella proximella is an easily recognized species due to the presence of setulae at both poles of spores, although these can disappear in dead material. Common species typically found on bark of several species of juniper (J. communis, J. oxycedrus, J. phoenicea, J. thurifera, J. sabina), less often found on conifers. Interestingly, some records were made on bark of Quercus, often on the thallus or in the vicinity of Gyalecta truncigena and G. ulmi. The identity of these collections on Quercus must be further studied as pointed out by Etayo (2010). Ertz & Diederich (2015) cite Tilia and Quercus as additional substrates.

 

References in our territory
  • Atienza V., Fos S., Sanz M.J., Calatayud V. & Barreno E. 1992. Epiphytic lichens from Iberian Paramerae. I. Javalambre mountains (Teruel, Spain). Stud. Geobot. 12: 63. (Esp.: Te; sub Banhegya setispora). [pdf]
  • Boqueras M. 2000. Líquens epífits i fongs liquenícoles del sud de Catalunya. Flora i comunitats, Arxius Secc. Ci. Inst. Estud. Catalans 127: 113. (Esp.: Cs, T; sub Banhegya setispora). [pdf]
  • Ertz D. & Diederich P. 2015. Dismantling Melaspileaceae: a first phylogenetic study of Buelliella, Hemigrapha, Karschia, Labrocarpon and Melaspilea. Fungal Diversity 71: 161. (Esp.: Mu). [pdf]
  • Etayo J. 1989. Les lichens épiphytes du pin noir à Larra (Navarra, Espagne). Cryptog. Bryol. Lichénol. 10 (4): 312. (Esp.: Na) [pdf]
  • Etayo J. 2010. Líquenes y hongos liquenícolas de Aragón. Guineana 16: 262. (Esp.: Hu) [pdf]
  • Etayo J. & López de Silanes M.E. 2008. Líquenes epífitos y hongos liquenícolas del Bosque Viejo de Munain-Okariz (Álava, País Vasco, España). Nova Acta Ci. Compostelana, Biol. 17: 20. (Esp.: Vi).  [pdf]
  • Etayo J. 2010. Líquenes y hongos liquenícolas del País Vasco. Catálogo del Año 2010. Ihobe, Gobierno Vasco: 4. (Esp.: Vi) [pdf]
  • Etayo J. & Blasco J. 1992. Líquenes epífitos de zonas áridas. El sabinar de la Retuerta de Pina (Los Monegros, España). Acta Bot. Malac. 17: 73. (Esp.: Z) [pdf]
  • Fos S. 2001. Flora liquénica de la Microrreserva de Las Hoyuelas y alrededores (Sinarcas, Plana de Utiel, E de Valencia). Consellería de Medi Ambient, Generalitat Valenciana, 210 p. (Esp.: V; sub Banhegyia setispora)
  • Fos S. 2002. Estudio de la diversidad liquénica epífita de los sabinares y pinares de la sierra de Javalambre (Sudeste de Teruel). Teruel 88-89: 220. (Esp.: Te, sub Banhegyia setispora) [pdf]
  • Giralt M. & Gómez-Bolea A. 1988. Líquens epífits de Tarragona interessants o nous per a la flora de Catalunya. II. Actes del Simposi Internacional de Botànica Pius Font i Quer 1: 205-212. (Esp.: T)
  • Giralt M., Gómez-Bolea A. & Llimona X. 1991. Flora liquénica epifítica de la Punta de la Mora (Tarragonès, Catalunya). Butl. Inst. Catalana Hist. Nat., Secc. Bot. 8: 64. (Esp.: T; sub Melaspilea proximella) [pdf]
  • Martínez I., Aragón G. & Burgaz A.R. 2002. Estudio de la flora liquénica epifítica de la sierra de Gúdar (Teruel). Teruel 88-89: 201. (Esp.: Te; sub Melaspilea proximella). [pdf]
  • Sarrión Torres F.J. 2001. Flora y vegetación de líquenes epífitos de Sierra Madrona-Valle de Alcudia (Ciudad Real). Relación con el estado de conservación de sus bosques. Tesis Doctoral, Universidad Complutense de Madrid: 234 (Esp.: CR, sub Banhegyia setispora) [pdf]
 
Sequences in public databases obtained from material collected in our territory

* sequenced material

Reference specimen marked in bold

Spain

Av: ARAN-Fungi 15404

B: ARAN-Fungi 7764

CR: Sarrión 1719,  Sarrión 1780, Sarrión 1782, Sarrión 2663.

Cs: MB-Lich d228

Gu: HB5529b (H.-O. Baral herbarium)

Hu: Etayo 21756 (JACA)

Lu: SANT-Lich 8784-A

M: ARAN-Fungi 14989 (det. I. Olariaga)

Na: herb. Etayo

Mu: herb. van den Boom 45865

O: ERD-7986

Sg: ARAN-Fungi 9737 (det. I. Olariaga)

So: ARAN-Fungi 14978

T: MB-Lich d225, MB-Lich c65, MB-Lich, c66, MB-Lich d227

Te: herb. G. Aragón 452/97, VAB-LICH 5065, MA-Lichen 11135

Vi: Etayo 24326, Etayo 26170 (VIT), Etayo 26203, Etayo 26371 (VIT), Etayo 26373

 

Sequences in public databases obtained from material collectedin our territory

van den Boom 45865: KP456187 (mtSSU)

 

Ascomata growing on bark of Juniperus thurifera (ARAN-Fungi 14989). Photograph I. Olariaga.

Ascoma section (ARAN-Fungi 14989) in water. Scale bar 50 µm. Photograph I. Olariaga.

Ectal excipulum and asci in IKI (ARAN-Fungi 14989). Scale bar 10 µm. Photograph I. Olariaga.

Asci in water (ARAN-Fungi 14989). Scale bar 10 µm. Photograph I. Olariaga.

Ascospores (ARAN-Fungi 14989) in water. Left: Senescent ascospores, pale brown. Right: ascospores showing setulae at both poles. Scale bar 10 µm. Photograph I. Olariaga.

How to cite this sheet:

Olariaga I. 2020. Melaspileella proximella (Nyl.) Boud. Fichas SIM (Updated on 11-XI-2020)