Observation 218640: Amanita calyptroderma G.F. Atk. & V.G. Ballen
When: 2015-10-11
(39.7463° -123.6102° 711m)
No herbarium specimen

Notes: Habitat notes: Growing out of dry, scrabbly soil in mixed coniferous-broadleaf (Coast Redwood, Black Oak, Bay Laurel, Madrone) forest

Key characters used to ID: Large, light-orange cap partially covered by a thick patch of universal veil; white gills and white spore-print; Cream-colored stalk with partial veil; large, sacklike volva at the base of the stalk. Microscopic characters: “Spores (8–) 9–12 × (5–) 6–7 μm, ellipsoid to elongate, smooth, hyaline, inamyloid” (Desjardin and Wood, 2015).


Amanita calyptroderma
Amanita calyptroderma spores in Melzer’s reagent [40× objective lens × 10× optical lens = 400× total magnification]

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Created: 2015-10-12 22:40:56 CEST (+0200)
Last modified: 2015-10-14 07:21:58 CEST (+0200)
Viewed: 28 times, last viewed: 2016-10-27 09:47:14 CEST (+0200)
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