Observation 216409: Amanita Pers.
When: 2015-09-18
Who: lxjfx

Notes: Growing at the base of a hardwood

SPORES: broadly elliptical, (7.31-)7.67-8.61(-8.96) x (6.0-)6.07-6.64(-7.03) µm Q:1.12-1.42 N:15


Spores (1 div = 1µm)

Proposed Names

56% (1)
Eye3 Eyes3
Recognized by sight

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Eye3 = Observer’s choice
Eyes3 = Current consensus


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Several of the webpages as well as the material illustrated here…
By: R. E. Tulloss (ret)
2015-10-01 23:33:56 EDT (-0400)

show some red-staining in the context of the lower stem or on the exterior of the lower stem or on the stem’s small bulb.

Perhaps this taxon falls in or near the rubescent group of amanitas…if the spores are amyloid.

Very best,


Thank you.
By: R. E. Tulloss (ret)
2015-10-01 23:19:40 EDT (-0400)


By: lxjfx
2015-10-01 19:19:10 EDT (-0400)

> Hence, the name proposed for the present species might be translated as “Amanita citrina-like.” Am I close?


According to Dr. Z. L. Yang’s study of the type …
By: R. E. Tulloss (ret)
2015-10-01 18:04:48 EDT (-0400)

of Amanita citrina var. grisea, the spores of that species are significantly larger than those reported in this observation and are subglobose on average. So, once again, citrina var. grisea seems not to be the material upon which lxjfx is reporting.

In these comments, I’m not adding anything new; I’m just attempting an English language narration to what lxjfx is reporting.

Very best,


From various language information on the web…
By: R. E. Tulloss (ret)
2015-10-01 17:56:19 EDT (-0400)

I see that “modoki” might be translated as the English suffix “-like.” The initial part of the name is very similar to the Japanese name for Amanita citrina var. grisea, but with the removal of the component indicating “dark.” Hence, the name proposed for the present species might be translated as “Amanita citrina-like.” Am I close?

Very best,


Replacement of comment…
By: R. E. Tulloss (ret)
2015-10-01 17:14:43 EDT (-0400)

The spores having not been mounted in an iodine solution are not shown to be amyloid. So placement in section Validae is not certain.

If the spores were to be shown to be amyloid, then it seems that your observed material is not a species of the citrinoid group because of the narrow form of the bulb. Hence, it must be distinct not only from siamensis, but also from lavendula (and its North American look-alikes), the European mappa, and the east Asian species citrina var. grisea (originally described from Japan by Dr. Hongo).

In other words, the species seems not to be in the basal grouping of the Validae that has been called Amanita series Mappae.

A very interesting species. I would like to know more about it.

Very best,

Rod Tulloss

Very interesting. Looks like a species of sect. Validae.
By: R. E. Tulloss (ret)
2015-10-01 16:48:33 EDT (-0400)

Can you translate the Japanese name for this species for us?

Very best,


It seems to match
By: lxjfx
2015-10-01 13:08:29 EDT (-0400)
I have been looking at this observeration now and then for three weeks.
By: R. E. Tulloss (ret)
2015-09-29 17:52:46 EDT (-0400)

I have not thought of anything except that the short marginal striations may suggest that the species is in section Amanita. The volval patches seem to have an olive tint with dark staining or dark dirt on top of them. The species seems faintly similar to a southeastern North American species (A. levistriata). This made me look at A. siamensis, which was compared to A. levistriata when the former was first described; however, siamensis is not very similar to the present amanita.

I have no guess. If a specimen becomes available or spore data can be obtained, I would like to know more about this species.

Very best,

Rod Tulloss

Created: 2015-09-18 08:15:03 EDT (-0400)
Last modified: 2016-06-18 08:07:07 EDT (-0400)
Viewed: 86 times, last viewed: 2016-11-21 23:23:41 EST (-0500)
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