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Go to the NZFungi website for more indepth information on Agrocybe pediades. Agrocybe pediades

Synonyms

Agaricus pediades
Naucoria pediades

Biostatus

Present in region - Exotic

Images (click to enlarge)

 

Caption: A-D Taylor 1325, A. Caulocystidia; B. Cheilocystidia; C. Basidium; D. Basidiospores.
Caption: E & G-I Taylor 1263, E. Caulocystidia, G. Cheilocystidia; H. Basidia; I. Basidiospores.
Caption: F, J, L Colenso b113, F. Cheilocystidia; J. Cheilocystidia of large basidioma; K. Cheilocystidia of small basidioma. L. Basidiospores
Caption: 242-Agrocybe pediades [Naucoria pediades]: a. spores.
 

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.
Description: The New Zealand material possessed the following characters: Pileus hemispherical convex or plano-convex, pale tan or golden tan, smooth. Stipe equal, neither ring nor velar fragments present. Gills adnate-sinuate, blackish brown. Basidiospores 12-14 x 7.5-8.5 µm, elliptic in face-view, slightly flattened in side-view, thick-walled; germ-pore broad, central. Basidia 4-spored, 33-34 x 9-11 µm, cylindrico-clavate with basal clamp-connections, hyaline, some pale yellowish. Cheilocystidia 19-35(-40) x 5-12 µm tibiiform with subcapitate to capitate head 2-5 µm broad, some with tapered neck, non-capitate 35-48 x 5-10 µm with apex 2-3 µm broad; pleurocystidia absent. Caulocystidia supported by cylindric hyphae with clamp-connections, in shape similar to those on gill-edge, varying from cells with tapered neck to cells with or without capitate head, some with pale yellow incrustations in alkali solutions. Clamp-connections present.
Notes: In Taylor 1263 the basidiospores were slightly larger especially in breadth, 12.5-15(-16) x 8-10(-11) µm, and may represent an independent but closely related taxon but without field data it is impossible to decide, especially as only two collections are available and each may represent the two extremes of a range of variation. In Segedin 1220 the basidiospores had a slightly excentric germ-pore.
In the literature 'Naucoria' pediades is recorded in Colenso (1886) and Massee (1898) but this taxon has undoubtedly been confused in the past. Colenso b 113 is a mixed collection of which the smaller element refers to A. pediades; the other part of b 113 refers to A. semiorbicularis q.v.

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: Naucoria pediades (Fries) (6,16) Fig. 20 = Agrocybe pediades (Fries) Fayod
All characters of the N.Z. collection (COLENSO 269) are similar to those of this fungus in Europe. Probably another introduced fungus growing by preference in paddocks and lawns.