Tremellodendropsidales » Agaricomycetes genera¬†incertae sedis » Tubulicrinopsis

Tubulicrinopsis ellipsospora

Tubulicrinopsis ellipsospora Kotir., Hjortstam & M. Kulju 2007, in Kotiranta et al., Annales Botanici Fennici, 44, 128134 (2007).

            Diagnosis: Basidiocarp relatively small, 25 cm along the wood, resupinate, thin, farinose or tufted, pale cream-coloured or slightly greenish. Subiculum almost lacking; the tufts are joined together with very narrow hyphal strings leaving the substrate visible. Hyphal system monomitic, all hyphae clamped. The few subicular hyphae relatively thin-walled (in CB, IKI, KOH), 34 μm in diameter, fairly long-celled, giving rise to broom- or tree-like structures (tufts) with unequally thick-walled (in CB, IKI), 22.5 μm wide, richly branched hyphae, which are very thin-walled in KOH. Cystidia none. Basidia clavate, subclavate or subcylindrical, sometimes sinuous, basally thick-walled in CB and IKI, thin-walled in KOH, basally clamped, 1015(–17) × 3.54 μm, with four, up to 4 μm long, very thin sterigmata, which bend inwards after the sporulation. Spores ellipsoid or lacrymoid, (2.6–)33.5 × 1.92.2(–2.4) μm, thin- or very thin-walled, CB, IKI, with a prominent apiculus [33.5 × 22.4 μm, L* = 3.2 μm, W* = 2.2 μm, Q = 1.31.6, Q* = 1.5 (Junninen 2998d), 2.63.4×1.92.2(–2.4) μm, L* = 3 μm, W* = 2.1 μm, Q = 1.21.7, Q* = 1.4 (Kulju 21/05), (2.6–)2.83.1 × 1.92.3 μm, L* = 3 μm, W* = 2.1 μm, Q = 1.31.6, Q* =1.5 (Kulju 85b/01)]. All the collections derive from poor Pinus sylvestris-dominated heath forest site types, where they grew on decorticated, small pines in advanced stages of decay together with an unnamed Pseudomerulius species.

Index Fungorum Number: IF529040


Figure 1. Tubulicrinopsis ellipsospora (AC from Junninen 2998d, holotype; D from Kulju 85b/01). A: Section through basidiocarp in KOH showing thin-walled hyphae and basidia. B: Basidia and hyphae in CB showing thick-walled hyphae and basidia. C and D: Spores.


Kotiranta, H., Hjortstam, K., Miettinen, O. & Kulju, M. 2007: Tubulicrinopsis gen. nov. (Basidiomycota, Aphyllophorales) and notes on Amauromyces pallidus. Annales Botanici Fennici, 44, 128134.


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