VIRTUAL MYCOTA: NZ Fungi Identification: Marasmius oreades

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Marasmius oreades

Synonyms

Collybia subclusilis
Agaricus oreades

Biostatus

Present in region - Exotic

Images (click to enlarge)


Caption: Fig. 19	Caption: 308-Marasmius oreades [Collybia subclusilis Stevenson]: a. spores.	Owner: P. Leonard	Owner: Herb. PDD
Caption: Picture Helen Greenep Owner: J.A. Cooper	Caption: Watercolour Owner: G.M. Taylor

Article: Stevenson, G. (1964). The Agaricales of New Zealand: V. Kew Bulletin 19(1): 1-59.
Notes: This buff-coloured 'fairy-ring' toadstool fairly commonly forms conspicuous rings in pasture. It appears to be parasitic on grass roots and leaves an area of weak grass inside the ring. Nelson, 19.4.1956, D. Read; Hope, 22.4.1956, D. Read; Nelson, 20.4.1957, E. B. Kidson, etc.

Article: Desjardin, D.E.; Horak, E. (1997). Marasmius and Gloiocephala in the South Pacific Region: Papua New Guinea, New Caledonia, and New Zealand taxa. Bibliotheca Mycologica 168: 152 p.
Habitat: Habit, habitat and distribution.- Solitary or seldom subcespitose, often in fairy rings, in pastures or lawns. Cosmopolitan, undoubtedly introduced to New Zealand.
Notes: Reported from New Zealand by Birch (1937) and Stevenson (1964). Selected Literature.- Antonin & Noordeloos (1993); Gilliam (1976); Singer (1965, 1976).

Article: Horak, E. (1971). A contribution towards the revision of the Agaricales (Fungi) from New Zealand. New Zealand Journal of Botany 9(3): 403-462 (http://www.rsnz.org/publish/abstracts.php).
Notes: We have observed this fungus several times. It has obviously been introduced with seeds, straw or other media. See Collybia subclusilis Stevenson (no. 308).

Article: Stevenson, G. (1964). The Agaricales of New Zealand: V. Kew Bulletin 19(1): 1-59.
Description: Pileus 3-3.5 µm diam., ochraceous buff, hygrophanous, indistinctly striate at margin, matt; flesh concolorous. Gills adnexed to adnate, seceding, creamy, rather distant. Stipe 4-5 cm x 4-5 mm, ochraceous buff, velvety, hollow, tough, equal, rooting at base. Spores 10-11 x 5 µm, non-amyloid, thin-walled, hyaline (Fig. 19). Cuticle of hyphae of large diam., closely woven.
Habitat: In rough grass, Karori, 15.10.1948, Stevenson (type).

Article: Horak, E. (1971). A contribution towards the revision of the Agaricales (Fungi) from New Zealand. New Zealand Journal of Botany 9(3): 403-462 (http://www.rsnz.org/publish/abstracts.php).
Notes: Collybia subclusilis Stevenson (29 D) Fig. 25 = Marasmius oreades (Fries) Earle
Spores almond-shaped to sublimoniform, hyaline, neither amyloid nor dextrinoid, smooth, 8-11.5 X 4.5-5.5 µ. This species was probably introduced with seeds (see habitat) and has to be regarded as a synonym of M. oreades.