Dacryobolus karstenii

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Dacryobolus karstenii

On a rotten conifer trunk. 25 December 2021 Bramdean Common, Hampshire. Photograph copyright Leif Goodwin.

Synonymns

Tubulicrinis karstenii , Phanerochaete karstenii, Stereum karstenii

Fruiting Body

Resupinate, forming a thin layer on the substrate, initially forming small round patches which coalesce with age, surface smooth to coarsely lumpy, whitish, yellowish or ochraceous, margin finely fibrous and whitish, often forming large patches

Flesh

Firm

Smell

Indistinct

Season

Autumn to spring

Distribution

Rarely reported

Habitat

On rotten wood from conifers, favouring pine

Spore Print

White

Microscopic Features

Spores sausage shaped, smooth (4.5-5) x (1.2-1.5) µm2. Basidia cylindrical 4 spored. Hyphal system dimitic. Generative hyphae thin walled, with clamps, 2 - 3 µm wide. Skeletal hyphae thick walled, 3 - 5 µm wide. Pseudocystidia emerging from the skeletal hyphae, cylindrical, thick walled except at the apex. Hymenial cystidia cylindrical, thin walled, slightly encrusted.

Edibility

Inedible

Dacryobolus karstenii

25 December 2021 Bramdean Common, Hampshire. Photograph copyright Leif Goodwin.

Dacryobolus karstenii

25 December 2021 Bramdean Common, Hampshire. Photograph copyright Leif Goodwin.

Dacryobolus karstenii

Spores in Melzer's solution viewed with a x100 immersion objective. 25 December 2021 Bramdean Common, Hampshire. Photograph copyright Leif Goodwin.

Dacryobolus karstenii

Basidia and hymenial cystidia in Congo Red solution viewed with a x40 objective. 25 December 2021 Bramdean Common, Hampshire. Photograph copyright Leif Goodwin.

Dacryobolus karstenii

A pseudocystidium in Congo Red solution viewed with a x40 objective. 25 December 2021 Bramdean Common, Hampshire. Photograph copyright Leif Goodwin.

Dacryobolus karstenii

7 February 2022 Minley Wood, Hampshire. Photograph copyright Leif Goodwin.

Dacryobolus karstenii

Spores in Congo Red solution viewed with a x100 immersion objective. 7 February 2022 Minley Wood, Hampshire. Photograph copyright Leif Goodwin.