navigans

Dryosphaera Jorgen Koch & E.B.G. Jones, 1989. Can. J. Bot., 67: 1184.

Type species:

Dryosphaera navigans Jorgen Koch & E.B.G. Jones, 1989. Can. J. Bot.., 67: 1185.

Sexual morph: saprobic, Ascomata: 150-220 um wide, slightly flattened, globose, coriaceous, white-light buff, non-ostiolate, gregarious, erumpent, free, when free attached to the surface with few or many long, rigid, thick-walled, unbranched, pale yellow hyphae 3-4 um in diam. originating from the basal part of the ascomata and often terminating in a branched attachment disc. The entire free surface is covered by numerous short appendages each comprised of a thick-walled stalk 12-14 um high, 5-6 um broad, broader at the base, with a terminal flat crown 12-16 um broad, 4-6 um high, of short, repeatedly divided branches ending in small conical tips. Peridium: membranous, up to 8 um thick, one layered, compressed of 1-(2-3) cells that are flat, thick-walled, and angular with diam. up to 10 μm. Asci: 36-48 x 13-20 um, 8-spored, numerous, in an irregular hymenium on the expanded and lobed upper part upper part of a stem-like structure arising from the base of the ascomata and stretching about one-third up into the centrum, thick-walled, clavate, pedunculate, persistent. Paraphyses: absent. Ascospores:  8-12 x 3-4 μm, 1-septate, constricted at the septum, hyaline, appendaged.  Appendages: thread-like, spirally unfolding from side of spore. Asexual morph: Undetermined (Description based on Koch & Jones (1989)).

Key references:

Andrienko AA (2001) Hoии Ta piДkichi bиД mopcъkиx ґpиib poДy Dryosphaera Koch & Jones з чophoґo mopя. Ukranian Botany Journal 58: 242-247.

Borse BD, Bhat DJ, Borse KN, Tuwas AR, Pawar NS (2012) Marine Fungi of India. Broadway Book Centre, India.

Hyde KD, Jones EBG, Moss ST (1986) How do fungal spores attach to surfaces? In: Biodeterioration 6 (eds S Barry, DR Houghton, GC Llewellyn, CE O'Rear), CAB Inter Mycol Inst, The Biodeterioration Society, London, pp. 584-589.

Jones EBG, Suetrong S, Sakayaroj J, Bahkali AH, Abdel-Wahab MA, Boekhout T, Pang KL (2015) Classification of marine Ascomycota, Basidiomycota, Blastocladiomycota and Chytridiomycota. Fungal Diversity 73: 1-72.

Koch J (1982). Some lignicolous marine fungi from Srilanka. Nord. J. Bot. 2: 163-169.

Koch J, Jones EBG (1989) The identity of Crinigera maritima and three new genera of marine cleistothecial ascomycetes. Can. J. Bot. 67: 1183-1197.

Prasannarai K & Sridhar KR (2001) Diversity and abundance of higher marine fungi on woody substrates along the  West Coast of India. Current Science 81: 303-311.

Rees G, Jones EBG (1985) The fungi of a coastal sand dune system. Bot. Mar. 28: 213-220.

Key to Dryosphaera species:

1. On Zostera leaves, ascospores 8.6-13.3 x 2.2-3.9 µm, appendages 9.4-17.6 x 0.3-1.1 µm                                D. tenuis

1. On wood associated with sand                                                                                                                     2

2. Ascospores 12-15 x 4-5.5 µm                                                                                                                     D. tropicalis

2. Ascospores 8-12 x 3-5 µm                                                                                                                         D. navigans