File:Lepiota ochraceofulva 690991.jpg
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Lepiota ochraceofulva Image location: Naaldbomenpad, Kralingse Bos, Rotterdam, Zuid-Holland, Netherlands A beautiful, but unfortunately not a very common species, with a Vulnerable status on our Red List (Arnolds & Veerkamp, 2008). Here’s the distribution in our country: https://www.verspreidingsatlas.nl/0073550 Description: Pileus: 22-40 × 10-12 mm; convex with decurved margin when young to plano-convex with broad, flattened umbo when mature; central velum patch velutinose (20x magn.), concentrically breaking up into smaller squamules towards margin, subsurface radially fibrillose; orangey-brown with ochraceous subsurface, velum darker than subsurface; no discolouration after bruising, although rubescent where animals have eaten. Lamellae: Numerous, crowded, free from stipe; white at first, becoming orangey-brown (a day after picking) starting on the margin of the pileus; margins white at first, later darker orangey-brown; lamellulae present (l: 3). Stipe: 24-36 × 6-8,5 mm; central, cylindrical, slightly bulbous base; velum similar to that on the pileus, forming a reddish-brown layer around the base, pulled apart upwards and gradually sparser, forming unconnected bands; incomplete cortina just above halfway of the stipe with squamulose margin; entirely fibrillose subsurface; whitish to pale reddish (appears to be blushing), more orangey at the apex; rubescent where animals have eaten. Context: Firm, fairly thick in the centre of the pileus, becoming hollow in stipe; white, slightly browner in the stipe, rubescent/orangey where animals have eaten. Microscopy: - Spores: Ellipsoid, but ovoid to amygdaliform in side view, very variable in shapes and sizes; smooth, granulose or guttulate inside; double-walled, apiculus prominent and eccentric. - Measurements (1000x; oil-im.; H2O; 1 sd=1,02 µm; n=12) - Spore stats.: (5,10) 6,80 (9,18) µm x (4,08) 4,55 (6,12) µm - Qav: (1,11) 1,50 (2,00) Ecology: Terrestrial, mixed coniferous woods with Pinus, Picea and more, fairly thick humus and leaf litter layer, meso- to eutrophic sandy soil; sharing habitat with several Clitocybe spp., Lepista nuda, Macrocystidia cucumis, Lepiota cristata, Strobilurus sp. and Baeospora myosura. Notes: I shared the collage of this collection in an Italian based facebookgroup, called “LEPIOTA e FUNGHI LEPIOTOIDI”, where I added the question: “Is this L. cortinarius or L. ochraceofulva?” The very kind Mario Di Giangregorio shared his thoughts, pictures and prints of descriptions for both species, which were sections from “Flore Mycologique d’Europe – Les Lépiotes – documents mycologiques hors série 3 – Lepiotaceae – Marcel BON – 1993”. I am very grateful for the help offered by the kind Mario! Recognized by sight: It was either L. ochraceofulva or L. cortinarius, based on macroscopical characteristics that I have seen on photographic material in the Dutch database “Verspreidingsatlas”. Used references: – Knudsen & Vesterholt. (2008). Funga Nordica. - Facebookpage “LEPIOTA e FUNGHI LEPIOTOIDI” (see notes) Based on microscopic features: See notes
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| current | 06:50, 8 March 2018 | | 3,945 × 2,219 (3.94 MB) | Leoboudv (talk | contribs) | =={{int:filedesc}}== {{Information |Description='''''Lepiota ochraceofulva''''' Image location: Naaldbomenpad, Kralingse Bos, Rotterdam, Zuid-Holland, Netherlands A beautiful, but unfortunately not a very common species, with a Vulnerable status on our Red List (Arnolds & Veerkamp, 2008). Here’s the distribution in our country: [https://www.verspreidingsatlas.nl/0073550 https://www.verspreidingsatlas.nl/0073550] Description: Pileus: 22-40 × 10-12 mm; convex with decurved margin when young to plano-convex with broad, flattened umbo when mature; central velum patch velutinose (20x magn.), concentrically breaking up into smaller squamules towards margin, subsurface radially fibrillose; orangey-brown with ochraceous subsurface, velum darker than subsurface; no discolouration after bruising, although rubescent where animals have eaten. Lamellae: Numerous, crowded, free from stipe; white at first, becoming orangey-brown (a day after picking) starting on the margin of the ... |
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