Hypsizygus ulmarius (Bull.) Redhead
(Elm Leech, Elm Oyster)

Taxonomic hierarchy:

Species	Hypsizygus ulmarius (Elm Leech, Elm Oyster)
Genus	Hypsizygus (leech toadstools)
Family	LYOPHYLLACEAE (a family of 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)

Hypsizygus ulmarius 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.)

Identification Works

	Author	Year	Title	Source
	Watling, R. & Gregory, N.M.	1989	Crepidotaceae, Pleurotaceae and other pleurotoid Agarics	British Fungus Flora, vol 6, 157pp, Her Majesty’s Stationery Office
	Wells, S. & T.	2000	Unusual abundance of Elm Oyster Fungus (Hypsizygus ulmarius) in Huntingdonshire	Field Mycology Vol 1 (3): 83-84.

Hypsizygus ulmarius (Elm Leech, Elm Oyster) may also be included in identification literature listed under the following higher taxa:

LYOPHYLLACEAE
(a family of 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))

NBN (data.nbn.org.uk) has a distribution map for Hypsizygus ulmarius (Elm Leech, Elm Oyster)

BioInfo (www.bioinfo.org.uk) has 6 host/parasite/foodplant and/or other relationships for Hypsizygus ulmarius (Elm Leech, Elm Oyster)

Rare

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Taxonomic hierarchy:

Hypsizygus ulmarius is also a member of:

Identification Works

BioImages - Virtual Field-Guide (UK)