Pleosporales » Lophiostomataceae » Coelodictyosporium

Coelodictyosporium pseudodictyosporium

Coelodictyosporium pseudodictyosporium (Qing Tian, Camporesi & K.D. Hyde) Thambug. & K.D. Hyde, in Thambugala et al., Fungal Diversity 74: 218 (2015)

Basionym: Lophiostoma pseudodictyosporium Qing Tian, Camporesi & K.D. Hyde, in Liu et al., Fungal Diversity: 10.1007/s13225-015-0324-y, [114] (2015) (Liu et al. 2015)

Index Fungorum number: IF 551236; Facesofungi number: FoF 00403

Etymology: In reference to the dictyosporous conidia similarity of the taxon to Dictyosporium.

Holotypus: MFLU 14-0737

Saprobic under periderm or semi-immersed in woody plant substrates. Colonies growing on dead branch of Spartium junceum. Conidiomata pycnidial, on the upper surface of stem, (130–)155–180 μm high × (145–)160–195 μm diam. (x̄ =165 × 180 μm, n = 10), solitary, scattered, superficial, globose to subglobose, black. Peridium thin at the apex, base and sides 12–15 μm (x̄ = 13.5 μm, n =7), a single layer, composed of brown to black thin-walled cells of textura angularis. Conidiogenous cells (2–)3–4.5 μm broad (x̄ = 3.5 μm, n = 10), holoblastic, integrated, smooth, brown, producing a branched conidium at the tip, cup-shaped or doliiform. Conidia (8–)10–15 μm diam. × 12–26(–32) μm high (x̄= 12.5 × 23.5 μm , n = 10), uniformly medium brown, complanate, dictyosporous conidia, regularly consisting of 6–8 rows of cells, each rows comprising 5–7 cells, 3–3.5 μm wide.

Culture characters: Conidia germinating on PDA within 24hand germtubes arising from both ends. Colonies growing slowly on PDA, reaching a diam. of 1 cm after 30 days at 16 °C, velvety, radiating towards the edge. Mycelium initially hyaline and light pink at the margin, after 30 days, dense, filamentous, reverse black, pigments produced.

Material examined: ITALY, ProvinceofForlì-Cesena[FC], Fiumicello, Premilcuore, on stem of Spartium junceum (Fabaceae), 6 March 2013, E. Camporesi (MFLU 14-0737, holotype); ex-type living culture, MFLUCC 13-0451.

GenBank ITS: KR025858, LSU: KR025862.

Notes: see Thambugala et al. (2015)