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 Agaricus campestris var. campestris
BiostatusPresent in region - Exotic
Images (click to enlarge)
Caption: A. campestris var. campestris, Bars = 5 µm. |
Article: Mitchell, A.D.; Walter, M. (1999). Species of Agaricus occurring in New Zealand. New Zealand Journal of Botany 37(4): 715-725 (http://www.rsnz.org/publish/abstracts.php).
Description: Pileus 60-100 mm diam., medium thickness,
fleshy, spherical when young, finally convex-applanate, surface silky smooth,
white (N9.5) when young, finally pinkish (5R 8/4), bruising red (5R 6/KM/12);
margin inrolled when young, finally straight, with remnants of veil; lamellae
insertion free, thin, crowded, pale pink (5R 9/2) when young, finally stronger
pink (5R 8/4) then brown (5YR 4/4); edge concolorous, fertile; trama parallel
to irregular. Stipe 50-80 x 10-15 mm, central, solid, cylindrical, narrowing
at base, surface smooth, floccose at apex, white (N9.5), bruising reddish (5R
6/10-5/10). Annulus thin, wide, pendant, brownish (5YR 4/4) above, white below,
surface silky. Flesh white (N9.5), quickly reddening (5R 6/10-4/12) upon cutting
or bruising; odour and taste pleasant. Schaffer' s cross-reaction negative.
Basidia 4-spored, 25-40 x 10-15 µm, broadly clavate, with sterigmata 2-5 µm.
Basidiospores dark brown (5YR 3/2) in mass, size (7.1-)8.0(-8.9) x (4.8-)5.5(-6.1)
µm, elongation (1.3-)1.5(-l .7) µm, ovoid to ellipsoid, brown (2.5YR 4/4) in
water, refractive centre (1-2 droplets), apiculus lateral, germ-pore present
Habitat: Common in rings in lawn or pasture.
Distribution: NEW ZEALAND Auckland (Taylor 1983), Canterbury,
Fiordland.
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