Observation 129595: Panaeolus papilionaceus var. parvisporus Ew. Gerhardt
When: 2013-02-27
No herbarium specimen

Notes: spores = 13.3 × 9.0
12.1 – 13.8 × 7.6 – 9.8

cheilocystidia abundant
pleurocystidia absent
basidia 4-spored

Proposed Names

61% (2)
Eye3 Eyes3
Recognized by sight: indistinctly appendiculate cap margin.
Used references: Gerhardt’s Panaeolus monograph
Based on microscopic features: smaller spores then var. papilionaceus

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Eye3 = Observer’s choice
Eyes3 = Current consensus

Comments

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Microscopy
By: Alan Rockefeller (Alan Rockefeller)
2013-03-01 07:10:53 PST (-0800)

This microscopy is helpful, but could be even more useful if you crush the gill so we can see the whole cystidia instead of just seeing the top half.

No problem
By: Byrain
2013-02-27 20:27:00 PST (-0800)

I think your Florida Panaeolus are pretty interesting, hope to see more micro on them in the future. :D

interesting…
By: Richard and Danielle Kneal (bloodworm)
2013-02-27 20:24:26 PST (-0800)

i think, from what i’ve seen…
at least in North Central FL, that this species (var. parvisporus) is more common.
very cool man.
thanks.

Abundance
By: Byrain
2013-02-27 20:20:39 PST (-0800)

I don’t have much experience with these yet so I’m not really sure, Gerhardt mentions in the description var. papilionaceus is more common.

Edit: With further comparison, these look a bit different then your P. goossensiae, the cap shape and colors seem different. For comparison…

let me rephrase…
By: Richard and Danielle Kneal (bloodworm)
2013-02-27 19:23:57 PST (-0800)

do you know which would be considered more abundant in NA…
var parvisporus or var papilionaceus??

Byrain…
By: Richard and Danielle Kneal (bloodworm)
2013-02-27 19:19:16 PST (-0800)

do you know which of the two species is most common in NA/Florida??

Panaeolus papilionaceus var. parvisporus description
By: Byrain
2013-02-27 19:02:11 PST (-0800)

From gerhardt, it translates with google translate relatively well.

Hut 0,8 – 1,5 cm breit, fingerhutförmig bis glockig, Oberfläche trocken, glatt und kahl, nur am Rande mit rudimentären, blassen Velumresten; nicht hygrophan; Farbe grau bis graubräunlich.

Lamellen zuerst grau, bald aber grau-schwärzlich gescheckt, mit hellerer Schneide, aufsteigend am Stiel angerheftet.

Stiel ca. 50-80 × 1,5-2,5 mm, schlank-zylindrisch, aufrecht und steif, zerbrechlich, enghohl; Farbe wie Hut, doch etwas blasser; gänzlich fein flockig, gegen die Spitze bereift, Basis schwach verdickt und vom Myzel weißfilzig, nicht wurzelnd.
Sporen 13-15(16) x 8-10 x (6)7-8 µm, glatt, opak, deutlich abgeplattet, in Breitansicht eekig wirkend, mit gerade sitzendem, deutlich vorgezogenem Keimporus.
Cheilozystiden farblos, durchgehend haarförmig oder an der Basis schwach bauchig erweitert, ca. 25-35 × 5-8µm; ohne Sulphidien.
Basidien 4-sporig, 22-30 × 11-13(15) µm

Standort:
Am Wegrand in Wald, vermutlich auf Resten von Pferdemist (Typus).

Verbreitung:
Anscheinend nahezu kosmopolitisch, doch viel seltener als die var. papilionaceus. Europa: Deutschland; Afrika: Malawi, Zaire; Amerika: Brasilien, Kolumbien, USA; Australien: New South Wales.

Abgrenzung:
Die var. parvisporus unterscheidet sich von der var. papilionaceus vor allem durch kleinere Sporenmaße. Die typische, in Breitansicht eckige Sporenform und die dunkle farbe der Sporen sowie ihre Undurchsichtigkeit sing identisch. Die Fruchtkörper scheinen im Durchschnitt kleiner zu bleiben und der Velumbehang des Hutrandes ist besonders vergänglich. Die in Afrika vorkommende Art Panaeolus goossensiae besitzt einen unbehangenen Hutrand, sehr ähnliche doch etwas kürzere, besonders aber schmalere Sporen und breitere, mehr flaschenförmige Cheilozystiden. Panaeolus venezolanus weicht durch entferntere Lamellen, hauptsächlich aber durch das Vorhandensein eines ringförmigen Stielvelums, ab.


Translated by google translate.

Hat 0.8 to 1.5 cm wide, thimble-shaped to bell-shaped, surface dry, smooth and bare, and only marginally with rudimentary, pale Velumresten; not hygrophan; gray to brownish-gray.

Fins gray first, but soon spotted blackish-gray, with a lighter blade, ascending anger attached to the handle.

Handle about 50-80 mm x 1.5-2.5, slender-cylindrical, straight and stiff, fragile, enghohl; color as hat, but paler; totally fine flaky, frosted against the tip, base thickened slightly and the mycelium weißfilzig, not rooted.
Spores 13-15 (16) x 8-10 x (6) 7-8 microns, smooth, opaque, flattened significantly, in broad view eekig acting, Keimporus with just one sitting, clearly drawn early.
Cheilozystiden colorless, through hair-shaped or at the base slightly bulbous extended approximately 25-35 × 5-8μm; Sulphidien without.
Basidia 4-sporig, 22-30 × 11-13 (15) microns

location:
Wayside in the forest, probably on the remains of horse manure (type).

spread:
Apparently, almost cosmopolitan, but much rarer than the var papilionaceus. Europe: Germany, Africa, Malawi, Zaire, South America: Brazil, Colombia, USA, Australia: New South Wales.

delimitation:
Which differs from the var parvisporus var papilionaceus especially by smaller dimensions spores. Typical, square in shape, and the wide view spores dark color of the spores, and their opacity sing identical. The fruiting bodies appear to remain on average smaller and Velumbehang of Hutrandes is very perishable. The Panaeolus species occurring in Africa goossensiae has a non hangenen brim, very similar but slightly shorter, but particularly smaller spores and broader, more bottle-shaped Cheilozystiden. Panaeolus venezolanus softened by distant lamellae, but mainly by the presence of an annular Stielvelums decreases.

Nice!
By: Byrain
2013-02-27 18:45:25 PST (-0800)

I think there are 2 good options, Panaeolus papilionaceus var. parvisporus & P. goossensiae. The latter has smaller spores, but your spores seem right in the middle, in cases like this I find measuring ~30 spores from various areas of the slide helps figure out the proper range. Also, measuring the spores from multiple specimens could help even more. I think you can rule out the more common P. papilionaceus var. papilionaceus because of the small spores.

For comparison, here are some spore ranges from gerhardt.

P. papilionaceus var. papilionaceus – (13)15-18(19) x (9,5)10-12(13) x (7)8-9,5(11) µm

P. papilionaceus var. parvisporus – 13-15(16) x 8-10 x (6)7-8 µm

P. goossensiae – 10-13 x (7)8-9,5 × 6-7 um

will do.
By: Richard and Danielle Kneal (bloodworm)
2013-02-27 16:41:12 PST (-0800)
Can you scope these?
By: Byrain
2013-02-27 16:37:14 PST (-0800)

Thanks. :)

Created: 2013-02-27 16:30:06 PST (-0800)
Last modified: 2013-02-27 20:21:09 PST (-0800)
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