Observation 55088: Leucoagaricus Locq. ex Singer

When: 2010-10-02

Collection location: Kalatope wildlife Sanctuary, Dalhousie, Himachal Pradesh, India [Click for map]

Who: Alok Mahendroo (alok)

No specimen available

Proposed Names

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Eye3 = Observer’s choice
Eyes3 = Current consensus


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the name and what does sanctioning mean
By: else
2012-11-14 14:18:08 CST (-0500)

Based on the photo alone, i am not able to give it a name. It does not look like La. viriditinctus as i have seen it (but that was only as dried material – much greener, and with rather striking red fibrils). La. viriditinctus was originally described from Sri Lanka.

Sanctioning – is a term used for the action by Fries (for some groups of fungi) and Persoon (for other groups of mushrooms), by publishing names in a few select publications. In those cases you will see the colon Fries or colon Persoon behind an author’s name. For instance, Boletus edulis Bull. : Fr.
Index fungorum gives you a for this example a link to the page in the sanctioning work.

If we mere mortals publish something it is just a publication, no blessings or special status at all.

Here is what the code has to say about sanctioning:
article 13.1. Valid publication of names for plants of the different groups is treated as beginning at the following dates (for each group a work is mentioned which is treated as having been published on the date given for that group):

FUNGI (including slime moulds and lichen-forming fungi), 1 May 1753 (Linnaeus, Species plantarum, ed. 1). Names in the Uredinales, Ustilaginales, and Gasteromycetes (s. l.) adopted by Persoon (Synopsis methodica fungorum, 31 December 1801) and names of other fungi (excluding slime moulds) adopted by Fries (Systema mycologicum, vol. 1 (1 January 1821) to 3, with additional Index (1832), and Elenchus fungorum, vol. 1-2), are sanctioned (see Art. 15). For nomenclatural purposes names given to lichens apply to their fungal component.

and then article 15:
15.1. Names sanctioned under Art. 13.1(d) are treated as if conserved against earlier homonyms and competing synonyms. Such names, once sanctioned, remain sanctioned even if elsewhere in the sanctioning works the sanctioning author does not recognize them.

Ex. 1. Agaricus ericetorum Fr. was accepted by Fries in Systema mycologicum (1821), but later (1828) regarded by him as a synonym of A. umbelliferus L. and not included in his Index (1832) as an accepted name. Nevertheless A. ericetorum is a sanctioned name.
15.2. An earlier homonym of a sanctioned name is not made illegitimate by that sanctioning but is unavailable for use; if not otherwise illegitimate, it may serve as a basionym of another name or combination based on the same type (see also Art. 55.3).

Ex. 2. Patellaria Hoffm. (1789) is an earlier homonym of the sanctioned generic name Patellaria Fr. (1822) : Fr. Hoffmann’s name is legitimate but unavailable for use. Lecanidion Endl. (1830), based on the same type as Patellaria Fr. : Fr., is illegitimate under Art. 52.1.
Ex. 3. Agaricus cervinus Schaeff. (1774) is an earlier homonym of the sanctioned A. cervinus Hoffm. (1789) : Fr.; Schaeffer’s name is unavailable for use, but it is legitimate and may serve as basionym for combinations in other genera. In Pluteus Fr. the combination is cited as P. cervinus (Schaeff.) P. Kumm. and has priority over the taxonomic (heterotypic) synonym P. atricapillus (Batsch) Fayod, based on A. atricapillus Batsch (1786).
15.3. When, for a taxon from family to and including genus, two or more sanctioned names compete, Art. 11.3 governs the choice of the correct name (see also Art. 15.5).

15.4. When, for a taxon below the rank of genus, two or more sanctioned names and/or two or more names with the same final epithet and type as a sanctioned name compete, Art. 11.4 governs the choice of the correct name.

Note 1. The date of sanctioning does not affect the priority (Art. 11) of a sanctioned name, which is determined only on the basis of valid publication. In particular, when two or more homonyms are sanctioned only the earliest of them may be used, the later being illegitimate under Art. 53.2.
Ex. 4. Fries (Syst. Mycol. 1: 41. 1821) accepted Agaricus flavovirens Pers. (1793), treating A. equestris L. (1753) as a synonym. Later (Elench. Fung. 1: 6. 1828) he stated “Nomen prius et aptius arte restituendum” and accepted A. equestris. Both names are sanctioned, but when they are considered synonyms A. equestris, having priority, is to be used.
15.5. A name which neither is sanctioned nor has the same type and final epithet as a sanctioned name in the same rank may not be applied to a taxon which includes the type of a sanctioned name in that rank the final epithet of which is available for the required combination (see Art. 11.4(b)).

15.6. Conservation (Art. 14) and explicit rejection (Art. 56.1) override sanctioning.

great find, Alok!
By: Debbie Viess (amanitarita)
2012-11-13 10:29:07 CST (-0500)

missed this the first go round.

apparently Else agrees with the current moniker or she would’ve voted it out.

No foolin they look like flowers (!) and that green staining is rad.

Keep up the good work!

I think i mean
By: Danny Newman (myxomop)
2012-11-13 05:18:32 CST (-0500)

the paper(s) in which a given combination was first validly published. maybe my terminology is off… what’s the correct term, else?

sanctioning publications?
By: else
2012-11-12 23:56:22 CST (-0500)

Danny what do you mean by that term?

Thanks, Alan
By: Danny Newman (myxomop)
2012-11-08 01:32:53 CST (-0500)

what’s more, if that paper’s distribution data is correct, La. caerulescens is an exclusively eastern US species.

Still a handful of new world, yellow-fleshed, blueing/greening lepiotaceous things on the site to work out, namely the following:

and your recent http://mushroomobserver.org/103295

the sanctioning publications
By: Danny Newman (myxomop)
2012-11-07 21:06:52 CST (-0500)

for each name are separated by over 100 years. If I had to pick one, I’d go with the folks with 21st century phylogenetics at their disposal. That said, where to “properly” place this may or may not be so conclusively decided by a single paper…

By: Richard Kneal (bloodworm)
2012-11-07 20:48:58 CST (-0500)

thanks for the insight.
i thought something was off there…
in that case, i have to agree with you.
but i think we should use Lepiota since it is more widely used on MO…

By: Danny Newman (myxomop)
2012-11-07 20:46:13 CST (-0500)
By: Richard Kneal (bloodworm)
2012-11-07 20:44:28 CST (-0500)
By: Danny Newman (myxomop)
2012-11-07 20:41:32 CST (-0500)

they’re synonyms

By: Christian (Christian Schwarz)
2010-10-10 13:36:36 CDT (-0400)

I’m not sure if the article will get you a species identity for sure, but it can’t hurt to check! There are certainly examples of mushrooms whose distributions span a sizable range of elevation.

The genus Lepiota in Kerala State, India. Mycotaxon 107: 105–138. 2009
By: Alok Mahendroo (alok)
2010-10-10 12:15:50 CDT (-0400)

Yes Christian, it refers to an article for Kerala.. which is a tropical sea side area lying towards the south of India.. while the region I am in is sub-tropical mountain belt at an elevation of 2000 to 3000 mts above sea level.. Do you think the study would hold relevance for my area… ??

In the current issue of Mycologia
By: Christian (Christian Schwarz)
2010-10-10 11:19:03 CDT (-0400)
Two new unusual Leucoagaricus species (Agaricaceae) from tropical China with blue-green staining reactions

Jun F. Liang, Zhu L. Yang, Jianping Xu & Z.W. Ge
Published Online: August 27, 2010
Mycologia 2010

Flower like blue staining ….
By: Alok Mahendroo (alok)
2010-10-10 11:04:38 CDT (-0400)

The flower shape in all the lepiotas I found in that location, was what confused me.. on top of that the cap turned blue… Well the flower shape could be because of sudden change of weather and the dry conditions created..

By: Sporulator
2010-10-10 09:15:06 CDT (-0400)

That is really interesting.
Is that flower-like shape of the mushroom cap due to
dry weather, or is that the normal appearance of the mushroom?

Blue staining lepiota…
By: Alok Mahendroo (alok)
2010-10-10 09:02:04 CDT (-0400)

This was the first time I’d seen Lepiota staining… so I was not certain that it a lepiota.. but apparently there are certain lepiota’s staining blue..

Created: 2010-10-09 11:44:06 CDT (-0400)
Last modified: 2012-11-14 16:17:12 CST (-0500)
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