Excluding Hygrocybe!

Lichenomphalia is a genus of lichenised mushrooms. All the historical names used for the NZ species are incorrect and we have a number of undescribed ones. Here's a preliminary key reflecting my understanding of the genus in NZ together with other inamyloid-spored omphalinoid fungi which could be mistaken for Lichenomphalia.

1	Associated with mosses or on soil and not associated with algal cells at base of stipe. Hyphae clamped.	2
1’	Always associated with green algal cells at base of stem. Hyphae unclamped.	4
2	Cap, gills and stem tan coloured, alpine	*Omphalina colensoi*
2’	Fruitbody with yellow or cream colours, not alpine, gills white, often in lawns	3
3	Fruitbody bright yellow cap/stem (if orange then consider Camaraophyllus delicatus, or Atheniella or Mycena acicula)	*Rickenella fibula sensu lato*
3’	Fruitbody darker colours, stem apex often violaceous	*Rickenella swartzii*
4	Associated alga of obvious flattened squamules. Frb white, flat topped, with lilac tinges at the base. Open areas	*Lichenomphalia 'Cobb valley'*
4’	Associated alga smaller granules or an algal mat. Frb brown, cream, orange, yellow, pink	5
5	Frb with tan colours, cap convex, undulating, stem scurfy, especially towards base.	*Lichenomphalia 'Otira Gorge'*
5’	Frb with other colours, or cap flat or depressed, and stem not scurfy	6
6	Frb cream to pink or yellow, in sphagnum bog, spore Q > 2	*Lichenomphalia 'Lewis Pass'*
6’	Frb yellow to orange, spore Q < 2	7
7	Frb bright lemon yellow, alga granular, spore Q 1.7-1.9	*Lichenomphalia alpina sensu NZ*
7’	Frb orange-yellow, alga a mat, spore Q < 1.7	*Lichenomphalia chromacea*.

Omphalina

Omphalina rivulicola aff. (=O. colensoi)

https://inaturalist.nz/observations/1441579

Possibly Omphalina pyxidata sensu NZ is a synonym and is a misapplication of the northern hemisphere O. pyxidata.

NZ material has a sequence match to O. antarctica. The species has been moved into .Arrhenia and has a drawing of the holotype looking somewhat different to this and the Genbank sequence a likely misidentification.

Omphalina wellingtonensis is described from New Zealand but is not a typical Omphalina in the modern sense. It looks superficially like Marasmius croceus/elegans but is more closely related to Mycena acicula (which is currently not correctly placed in Mycena)

Rickenella

Rickenella fibula

https://inaturalist.nz/observations/961400

Rickenella swartzii

https://inaturalist.nz/observations/1365687

Lichenomphalia subgenus lichenomphalia

Lichenomphalia 'Cobb valley'

https://inaturalist.nz/observations/1439272

Lichenomphalia subgenus protolichenomphalia

Lichenomphalia 'Otira Gorge'

https://inaturalist.nz/observations/1354682

This is Lichenomphalia velutina sensu NZ, a misapplication. Some specimens of L. umbellifera ss NZ are also referable to this species. It is related to L. velutina/grisella of the northern hemisphere.

Lichenomphalia 'Lewis Pass'

https://inaturalist.nz/observations/1439264

Lichenomphalia alpina ss NZ

https://inaturalist.nz/observations/1439269

Lichenomphalia chromacea

https://inaturalist.nz/observations/1439274

Cantharellula alpina Stevenson is a synonym. Horak (1971) A Contribution towards the Revision of the Agaricales (Fungi) from New Zealand. New Zealand Journal of Botany, v9, pp403-462 considered this to be a Hygrophoropsis but re-examination of the type indicates it is a good species of Lichenomphalia.

L. umbellifera sensu NZ is a misapplication of this species or L. sp. 'Otira'.

Posted on April 11, 2015 07:05 AM by