Name: Crucibulum laeve (Huds.) Kambly
Most Confident Observations:
Copyright © 2011 Hamilton (ham)
Copyright © 2008 Dan Molter (shroomydan)
Copyright © 2018 Judi Thomas
Copyright © 2016 walt sturgeon (Mycowalt)
Version: 7
Previous Version 

First person to use this name on MO: Nathan Wilson
Editors: Michael Wood, Douglas Smith, Jason Hollinger, Patrick R. Leacock


Rank: Species

Status: Accepted

Name: Crucibulum laeve

ICN Identifier: missing

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Author: (Huds.) Kambly

Citation: Univ. of Iowa Stud. Nat. Hist. 17(4): 167. 1936

Synonym(s):Crucibulum crucibuliforme (Scop.) V.S. White

Deprecated Synonyms: Crucibulum vulgare Tul. & C. Tul., Cyathus laevis DC

Misspellings: Crucibulum levis

Brief Description: [See More | Edit]

Features include nearly spherical to short-cylindric thick-walled nest with coarsely tomentose lid, exterior yellowish to tawny or cinnamon brown becoming whiter or darker, and velvety becoming smooth, interior whitish to grayish or pale brown and shiny smooth, eggs whitish to light brownish, attached by a papilla to a cord which is joined to the inside of the cup, and growth on sticks, plant debris or sometimes dung.

Eggs: 0.1-0.2cm across, several, circular but flattened (lens-like or disc-like), “usually attached to nest by long thin cords”; “whitish to buff or with a very slight brownish tinge”, (Arora), 0.04cm thick, frequently 0.14cm across, occasionally 0.16-0.20cm across, variable in size, even in the same cup, attached to cup by cord which attaches to a nipple-like protuberance on egg; pale ochraceous, later becoming white, (Brodie), 0.15cm across, white, attached to cup by long thin cord, (Phillips), 5-12 per cup, lens-shaped, attached by short thread; ocher, (Courtecuisse), attached by coiled cords, (Lincoff(2)), eggs develop and stay for some time in a gelatinous liquid, (Lincoff(1))

Outer Surface: yellowish or tawny to cinnamon brown, often darker or whiter when old; velvety or shaggy, becoming nearly smooth when old, (Arora), alutaceous-yellow, tawny-yellow, becoming white when old; velvety, becoming smooth when old, (Brodie), yellow ocher to tawny brown; velvety, (Phillips), yellowish gray-brown; +/- fibrillose, (Courtecuisse)

Inner Surface: white to silvery, gray, or pale cinnamon; smooth, somewhat shiny, (Arora), very smooth, shiny, (Brodie), pallid; smooth, shiny, (Phillips)

Nest: 0.5-1.2cm broad at top, 0.5-1.2cm high, at first nearly round, becoming cylindric “then deeply cup-shaped (i.e. with a wide flaring mouth)”, “the rim more or less circular and covered at first by a hairy lid”, wall tough, persistent, (Arora), 0.5-0.8cm high, almost as wide at mouth, nearly spherical to short-cylindric, thick-walled, mouth entirely smooth; lid coarsely tomentose, (Brodie), 1cm across, 0.5-1cm high, narrowing downward; mouth at first covered by densely hairy lid, (Phillips), lid orange-yellow then white, (Courtecuisse)

Microscopic: spores (4)7-10 × 3-6 microns, elliptic, smooth, colorless, thin-walled, (Arora), spores 8.8 × 4.4 microns, elliptic, (Brodie), spores 4-10 × 4-6 microns, elliptic, smooth, (Phillips)

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