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''Agaricus lilaceps'', also known as the cypress Agaricus or the giant cypress agaricus is a species of mushroom. It is among the largest and most edible ''Agaricus'' species in California.〔Kerrigan, Richard W. (1986). The Agaricales (Gilled Fungi) of California. 6. Agaricaceae. Mad River Press: Eureka, CA. page 62〕 Aside from size, ''Agaricus lilaceps'' is characterized by a robust stature, as the stipe often club-shaped.〔Kerrigan, R. W. (1985). Studies in ''Agaricus'' II: ''Agaricus lilaceps'' re-evaluated. ''Mycologia'' 77: 137–141.〕 == Description == The cap of the mushroom is 8–20 cm broad, convex, and expands to nearly plane. As it ages, the disc sometimes depresses. The margin, however, is incurved, although it decurves at maturity. The surface of the cap is at first pallid to cream-buff, especially when developing below ground, but soon becomes appressed and fibrillose-squamose. In addition, it varies from brown, hazel-brown, dull chestnut-brown, and occasionally lilac-brown, although it darkerns in age. At times, the surface develops orange-brown, rufescent areas. The context is thick, very firm, white, and slowly turns vinaceous when cut or bruised. The odor is that of a typical mushroom, although it tastes mild.〔Hotson, J. W. & D. E. Stuntz (1938). The genus ''Agaricus'' in western Washington. ''Mycologia'' 30: 204–234.〕 The gills of ''Agaricus lilaceps'' are free, close, moderately broad, and dingy-pink when young. However, when bruised, it turns reddish-brown slowly, and dark chocolate-brown at maturity.〔Kerrigan, R. W., P. Callac, M. P. Challen & L. A. Parra (2005). ''Agaricus'' section Xanthodermatei: a phylogenetic reconstruction with commentary on taxa. ''Mycologia'' 97: 1292–1315.〕 The stipe is 9–19 cm long, 3–5 cm thick, and equal to clavate. The core of the stem is stuffed, while the surface is dry and white with scattered fibrils at the apex. However, the base is a discoloring dingy brownish-red to ochraceous. Also, the stipe can be smooth to patchy fibrillose below.〔Zeller, S.M. (1938). New or Noteworthy Agarics from the Pacific Coast States. ''Mycologia'' 30: 468–474.〕 There is a partial white veil that is membranous, thick, and elastic. The upper surface is wrinkled, while the lower surface is more or less smooth, occasionally cracking and forming patches. Also, the lower surface sometimes yellows in age or when bruised, forming a superior, pendulous annulus at maturity. The stipe gradually becomes blackish from adhering spores.〔 The spores are 5–6.5 by 4–5 µm, elliptical, and smooth. The spore print is dark-brown. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Agaricus lilaceps」の詳細全文を読む スポンサード リンク
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