This web site will be closing down: please use www.EnglishFungi.org instead.

Phaeoclavulina roellinii

| |
Phaeoclavulina roellinii

The specimens were a more pronounced yellow brown than in the photographs. 29 November 2020 Hampshire. Photograph copyright Leif Goodwin

Synonymns

Ramaria roellinii

Fruiting Body

Multiply branched, upright, growing from a common base, pale yellow when young, becoming ochraceous brown with age especially at the base, rhizomorphs white, to about 4 cm high. On exposure to KOH solution the hymenium, but not the context, turns rapidly chestnut brown.

Flesh

Whitish, firm

Smell

Indistinct

Taste

Indistinct

Season

Late summer to early winter

Distribution

Very rare

Habitat

On soil with coniferous and deciduous trees

Spore Print

Yellow

Microscopic Features

Spores tear drop shaped (6-8) x (3-4.5) µm2, Q 1.7-2.2, decorated with short spines 0.2-0.5 µm long. Hyphal cords covered in star shaped crystals. Hyphal system monomitic, septa with clamps. Basidia slenderly club shaped, 4 spored.

Edibility

Inedible, possibly posionous

Notes

Identified using Fungi of Temperate Europe. See also Kříž M., Jindřich O., Kolařík M. (2019): Contribution to the knowledge of myco-biota of Central European dry grasslands: Phaeoclavulina clavarioides and Phaeoclavulina roellinii (Gomphales). - Czech Mycol. 71(2): 137-150. This species is almost identical to P. flaccida, with which it might be conspecific. It can be recognised by the colour change in response to KOH. There are several similar species including P. decurrens, which is associated with deciduous trees, and P. eumorpha, which has larger spores and irregular crystals on the rhizomorphs.

Additional Photographs

Phaeoclavulina roellinii

29 November 2020 Hampshire. Photograph copyright Leif Goodwin

Phaeoclavulina roellinii

Spores in Congo Red solution viewed with a x100 immersion objective. 29 November 2020 Hampshire. Photograph copyright Leif Goodwin

Phaeoclavulina roellinii

Star shaped crystals on the rhizomorphs in Congo Red solution viewed with a x40 objective. 29 November 2020 Hampshire. Photograph copyright Leif Goodwin

Phaeoclavulina roellinii

29 November 2020 Hampshire. Photograph copyright Leif Goodwin

Phaeoclavulina roellinii

The reaction to KOH solution. 29 November 2020 Hampshire. Photograph copyright Leif Goodwin