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Go to the NZFungi website for more indepth information on Psilocybe sp. 2. Psilocybe sp. 2

Synonyms

Agrocybe semiorbicularis
Naucoria semiorbicularis
Agaricus semiorbicularis

Biostatus

Present in region - Indigenous

Article: Watling, R.; Taylor, G.M. (1987). Observations on the Bolbitiaceae: 27. Preliminary account of the Bolbitiaceae of New Zealand. Bibliotheca Mycologica 117: 61 p. + 17 pl.
Notes: As Agaricus semiorbicularis, Waitaki, Berggren 61 (K). Badly consumed by insects. Only the following microscopic data was obtainable;
Cheilocystidia absent. Basidiospores 11-12 x 6.5-7(-7.5) µm, smooth, thick-walled with truncate germ-pore, sometimes with dark inclusions. Pileipellis filamentous. Neither cheilocystidia nor pleurocystidia could be found.
This belongs to Psilocybe; see comments above. We do not agree with the placement by Horak (197ib).
An illustration in E apparently is a copy by M. C. Cooke of a Berggren collection labelled 'AGARICUS (GALERA), on the ground, New Zealand'.  It is impossible to go any further but it is not unlikely that this figure depicts one of the above collections of Psilocybe.

Article: Massee, G.E. (1899) [1898]. The fungus flora of New Zealand. Transactions and Proceedings of the New Zealand Institute 31: 282–349 Wellington:.
Description: Pileus hemispherical, then expanded, even, glabrous, slightly viscid, at length rivulose, tawny-ferruginous, ochraceous when dry, 2.5-5 cm. across when expanded; flesh thin, whitish; gills adnate, rarely more or less sinuous, very broad, crowded, pallid, then rusty - orange ; spores elliptical, 10 x 5-6 µ; stem 5-10 cm. long, 2-4 mm., thick, tough, nearly straight, pale-ferruginous, shining, base usually darker, hollow, the cavity containing a free strand which readily splits into fibrils.
Habitat: Among short grass, &c.
Distribution: Waitaki, New Zealand. Australia, India, Europe, United States.
Notes: Allied to Naucoria pediades, from which it is readily distinguished by the viscid pileus, broad gills, and rusty or ferruginous stem.

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: 293. X A Naucoria semiorbicularis (Fries) (4,8,16) = Agrocybe semiorbicularis (Fries) Fayod
Although the material (BERGGREN 61) is half destroyed by insects all the diagnostic microscopical characters of this European species were found. It is apparently an introduced fungus in New Zealand.

Article: Cooke, M.C. (1879). New Zealand fungi. Grevillea 8(46): 54-68.