Jump to content

Amanita umbrinolutea

From Wikipedia, the free encyclopedia

Amanita umbrinolutea
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Fungi
Division: Basidiomycota
Class: Agaricomycetes
Order: Agaricales
Family: Amanitaceae
Genus: Amanita
Species:
A. umbrinolutea
Binomial name
Amanita umbrinolutea
(Secr. ex Gillet) Bataille
Amanita umbrinolutea
View the Mycomorphbox template that generates the following list
Gills on hymenium
Cap is umbonate
Hymenium is free
Stipe has a volva
Spore print is white
Ecology is mycorrhizal
Edibility is unknown

Amanita umbrinolutea, also known as the umber-zoned ringless amanita, is a species of the genus Amanita.

Description

[edit]

The cap of A. umbrinolutea is usually free of volval remnants, 4.5–9 centimetres (2–3+12 inches) wide, at first conico-paraboloid, then somewhat campanulate to convex and finally planar, umbonate, with a strongly striate margin (occupying around 25–35% of the cap's radius).[1] The cap is often dark in the center, then pale, then dark over the inner edges of the lamellae and on the ridges between the marginal striations; it can at other times be pallid in the center, but strongly zonate; the pigmentation intensity varies, with the center ranging from umber to grayish umber-brown to beige or pale grayish brown. The gills are free, crowded, off-white to sordid pale cream in mass, and up to 6 millimetres (14 in) broad; the short gills are truncate, vary in length, and are scattered and unevenly distributed.[1]

The stem is 11.5–18.5 cm (4+127+12 in) × 6–11 mm, pale cream to pale beige or isabella color or pale grayish brown, with a faint appressed zigzag girdles of fibrils, with a fleshy membranous sack-like volva at the base. The 3–4 cm (1–1+12 in) high volva is attached to the bottom 5 mm or so of the stipe. The spores measure 10.5–13.4 × 9.5–12.5 (1.05–1.34 x 0.95–1.25 cm) μm and are subglobose (infrequently either globose or broadly ellipsoid) and inamyloid. Clamps are absent from the bases of basidia.

Distribution and habitat

[edit]

A. umbrinolutea is widely distributed in Europe, with its range extending eastward at least to around northwestern Pakistan and North India. Known specimens have examined have all been found in association with conifers (including pine and spruce).[1]

See also

[edit]

References

[edit]

As of this edit, this article uses content from "Amanita manginiana", which is licensed in a way that permits reuse under the Creative Commons Attribution-ShareAlike 3.0 Unported License, but not under the GFDL. All relevant terms must be followed.

  1. ^ a b c "Amanita umbrinolutea". Amanitaceae.org. Retrieved 2016-08-27.