Psathyrella senex (Peck) A.H. Sm.
(a brittlestem)

Interactions where Psathyrella senex is the dominant partner and gains from the process

The following relationships have been collated from the published literature (see 'Interaction References').

Stage		Summary			Taxon	Vernacular	Classification	References	Darwin Classification of Active Taxon	Active Taxon	Active Vernacular	Active Taxon Uncertain	Active State	Active Part	Active Stage	Relationship	Relationship Uncertain	Relationship Geography	Darwin Classification of Passive Taxon	Passive Taxon	Passive Vernacular	Passive Taxon Uncertain	Passive State	Passive Part	Passive Stage	Passive Taxon's significance to Active Taxon	Indoors etc	Season
fruitbody		fruitbody is saprobic on debris			Calluna vulgaris	Heather	Ericales: Ericaceae	Checklist of the British and Irish Basidiomycota, Legon, N.W. & Henrici, A. with Roberts, P.J., Spooner, B.M. & Watling, R., 2005	/Fungi/Basidiomycota/Agaricomycetes/Agaricales/Psathyrellaceae/Psathyrella senex/	Psathyrella senex	a brittlestem				fruitbody	Foodplant / saprobe			/Plantae/Tracheophyta/Magnoliopsida/Ericales/Ericaceae/Calluna vulgaris/	Calluna vulgaris	heather				debris
fruitbody		fruitbody is saprobic on wet debris			Alnus	alders	Fagales: Betulaceae	Checklist of the British and Irish Basidiomycota, Legon, N.W. & Henrici, A. with Roberts, P.J., Spooner, B.M. & Watling, R., 2005	/Fungi/Basidiomycota/Agaricomycetes/Agaricales/Psathyrellaceae/Psathyrella senex/	Psathyrella senex	a brittlestem				fruitbody	Foodplant / saprobe		UK and/or Eire	/Plantae/Tracheophyta/Magnoliopsida/Fagales/Betulaceae/Alnus/	Alnus	alders		wet		debris
fruitbody		fruitbody is associated with			Betula	birches	Fagales: Betulaceae	Checklist of the British and Irish Basidiomycota, Legon, N.W. & Henrici, A. with Roberts, P.J., Spooner, B.M. & Watling, R., 2005	/Fungi/Basidiomycota/Agaricomycetes/Agaricales/Psathyrellaceae/Psathyrella senex/	Psathyrella senex	a brittlestem				fruitbody	Plant / associate		UK and/or Eire	/Plantae/Tracheophyta/Magnoliopsida/Fagales/Betulaceae/Betula/	Betula	birches
fruitbody		fruitbody is saprobic on debris			POACEAE	grasses, couch	Poales	Checklist of the British and Irish Basidiomycota, Legon, N.W. & Henrici, A. with Roberts, P.J., Spooner, B.M. & Watling, R., 2005	/Fungi/Basidiomycota/Agaricomycetes/Agaricales/Psathyrellaceae/Psathyrella senex/	Psathyrella senex	a brittlestem				fruitbody	Foodplant / saprobe			/Plantae/Tracheophyta/Magnoliopsida/Poales/Poaceae/	Poaceae	grasses, couch				debris
fruitbody		fruitbody is associated with			Sphagnum	bog mosses	Sphagnales: Sphagnaceae	Checklist of the British and Irish Basidiomycota, Legon, N.W. & Henrici, A. with Roberts, P.J., Spooner, B.M. & Watling, R., 2005	/Fungi/Basidiomycota/Agaricomycetes/Agaricales/Psathyrellaceae/Psathyrella senex/	Psathyrella senex	a brittlestem				fruitbody	Plant / associate		UK and/or Eire	/Plantae/Bryophyta/Sphagnopsida/Sphagnales/Sphagnaceae/Sphagnum/	Sphagnum	bog mosses

Author & Year	Title	Source
Legon, N.W. & Henrici, A. with Roberts, P.J., Spooner, B.M. & Watling, R., 2005	Checklist of the British and Irish Basidiomycota	517pp, Royal Botanic Gardens, Kew

Psathyrella senex (a brittlestem) may also be included in 'feeds on' relations listed under the following higher taxa:

FUNGI
(true fungi)

Psathyrella senex (a brittlestem) may be included in 'fed on by' relations listed under the following higher taxa:

Psathyrella
(brittlestem toadstools)

AGARICALES
(mushrooms and toadstools)

FUNGI
(true fungi)

Macromycetes
(larger fungi, macrofungi)

Fungi s.l.
(fungi (in the broad sense))

Taxonomic hierarchy:

Species	Psathyrella senex (a brittlestem)
Genus	Psathyrella (brittlestem toadstools)
Family	PSATHYRELLACEAE (a family of inkcap and brittlestem toadstools)
Order	AGARICALES (mushrooms and toadstools)
Subclass	AGARICOMYCETIDAE (a subclass of basidiomycetes)
Class	AGARICOMYCETES (a class of fungi)
Subphylum	AGARICOMYCOTINA (a subphylum of fungi)
Phylum	BASIDIOMYCOTA (spore droppers, basidiomycetes)
Kingdom	FUNGI (true fungi)
Domain	Eukaryota (eukaryotes)
Life	BIOTA (living things)

Psathyrella senex is also a member of:
Macromycetes - larger fungi, macrofungi (via Agaricales)
Fungi s.l. - fungi (in the broad sense) (via Fungi)
Lower Plants - lower plants (via Fungi s.l.)

NBN

NBN (data.nbn.org.uk) has a distribution map for Psathyrella senex (a brittlestem)

Psathyrella senex (a brittlestem) may be included in identification literature listed under the following higher taxa:

Psathyrella
(brittlestem toadstools)

PSATHYRELLACEAE
(a family of inkcap and brittlestem toadstools)

AGARICALES
(mushrooms and toadstools)

AGARICOMYCETIDAE
(a subclass of basidiomycetes)

AGARICOMYCETES
(a class of fungi)

BASIDIOMYCOTA
(spore droppers, basidiomycetes)

FUNGI
(true fungi)

Eukaryota
(eukaryotes)

BIOTA
(living things)

Macromycetes
(larger fungi, macrofungi)

Fungi s.l.
(fungi (in the broad sense))

Literature listed under the following higher taxa may be relevant to Psathyrella senex (a brittlestem):

Psathyrella
(brittlestem toadstools)

PSATHYRELLACEAE
(a family of inkcap and brittlestem toadstools)

AGARICALES
(mushrooms and toadstools)

AGARICOMYCETIDAE
(a subclass of basidiomycetes)

AGARICOMYCETES
(a class of fungi)

BASIDIOMYCOTA
(spore droppers, basidiomycetes)

FUNGI
(true fungi)

Eukaryota
(eukaryotes)

BIOTA
(living things)

Macromycetes
(larger fungi, macrofungi)

Fungi s.l.
(fungi (in the broad sense))

BioImages

BioImages (www.bioimages.org.uk) has 13 images of Psathyrella senex (a brittlestem)

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