Observation 21331: Amanita pantherina group

When: 2009-05-26

Collection location: Georgia, USA [Click for map]

Who: AmatoxinApocalypse (AmatoxinApocalypse)

Specimen available


largest specimen found, cap 4" across the longest point, note annulus in other picture as well as here.

Proposed Names

43% (5)
Recognized by sight
43% (5)
Eye3 Eyes3
Recognized by sight: yellowish-tan cap color, rolled margin to volva; annulus NOT inverted like in velatipes. we’ll have to wait for the microscopy for our varietal name, but it’s pretty clear that this is section amanita and most likely a panther variety.

Please login to propose your own names and vote on existing names.

Eye3 = Observer’s choice
Eyes3 = Current consensus


Add Comment
The latest pictures look like species 34
By: R. E. Tulloss (ret)
2009-05-28 15:49:52 +03 (+0300)


Not sure if I have enough “i’s” there…

The latest pictures look very much like species 34, which I know largely because it grows under a pinoak next to my house. Your images 44641 and 44642 are very typical of the appearance of sp. 34 when it is wature. I have pretty good data on this undescribed species. If you can send me part of your dried material (please give date of collection, site of collection, habitat, and what ever notes you have on size, color, etc.), I can tell whether we’ve come to an ID or not.

My postal address is near the top of the Amanita Studies home page:

< http://eticomm.net/~ret/amanita/mainaman.html >.

Very best,


What about this description? It is for a tiny species with an ocreate volva…
By: R. E. Tulloss (ret)
2009-05-28 01:37:12 +03 (+0300)

This species is also pictured on-line in the New Jersey Pine Barrens checklist/picturebook on the Amanita Studies site:


Amanita species 34
PILEUS: 33 – 46 mm wide, white to pale yellow (near 3A2 or near 2.5Y 8/2) over marginal striations, with disc orange-tan (about 5B5) or yellow-brown (10YR 6/6 or slightly more orange than 10YR 6/6), partially bleaching or becoming uniformly pale cream in age, convex to plano-convex, often with decurved margin, finally concave with up-flaring margin at maturity, tacky to viscid at first, subshiny when dry; context whitish with yellowish/tannish region in disc to mostly yellow with white only near lamellae, unchanging when cut or bruised, 1 – 4 mm thick, thinning evenly for 50% to 80% of radius, then membranous to margin; margin short-striate to striate to tuberculate-striate (0.25 – 0.6R), nonappendiculate; universal veil absent or in irregular small warts crumb-like, sometimes crowded over disc, cream to pale tan, pulverulent to floccose, detersile.
LAMELLAE: narrowly adnate to free with or without decurrent lines on stipe apex, close to crowded, off-white to cream in mass, white or watersoaked in side view, 2.5 – 6 mm broad, somewhat tear-shaped to ventricose; lamellulae truncate to rounded truncate to truncate with attenuate tooth near pileus context, of diverse lengths, unevenly distributed, relatively common.
STIPE: 28 – 80 × 3.5 – 6 mm; white, sometimes with yellow tint near apex, browning somewhat from handling, narrowing upward to subcylindric and flaring slowly toward apex or narrowest at mid-stipe, often somewhat flattened in upper portion (take cross-section at apex), occasionally somewhat flexuous, satiny to finely pulverulent above annulus, sometimes somewhat shiny and minutely fibrillose and longitudinally striatulate below annulus; bulb 6 – 15 × 5.5 – 15 mm, subglobose to ovoid to subnapiform to somewhat irregular (knobby) and then with somewhat rounded point on bottom; context white to off-white, unchanging when cut or bruised, hollow to stuffed with white material, with central cylinder 1 – 1.5 mm wide, concolorous to faintly tannish in larva tunnels; partial veil median to submedian, white, membranous, delicate, fragile, flaring upward at first, often lost; universal veil as white role of tissue close to stipe base at apex of bulb or (occasionally) lacking.
Odor fungoid or lacking. Taste not recorded.
MACROCHEMICAL TESTS: Spot test for laccase (syringaldazine) – negative. Spot test for tyrosinase (paracresol) – positive throughout basidiocarp in 1 min., with gill faces last to show strong positive. Test vouchers: Tulloss 8-23-85-B, 9-1-85-H, -I, and 7-3-87-C.

After looking through undescribed taxa with ocreate or limbate partial veils..
By: R. E. Tulloss (ret)
2009-05-28 01:32:53 +03 (+0300)

My notes on S1 say that it’s volva is like a combination of a broken ocreate volva (broken ring that is) and a limbate volva. I’ve always thought it was more like A. russuloides or A. gemmata than A. velatipes; it also might be similar to the poorly understood A. agglutinata (which long suffered from being treated as if it were something like A. volvata of sect. Amidella).

If you could send me a mature specimen, I can at least measure the spores and tell you whether they match with anything for which I have good spore measurement records. My address is near the top of the page at the following URL:


I suggest marking the packet as follows:

“Of no commercial value. Dried and disinfected botanical material for scientific study only."

Drying it quickly (but not cooking it) produces the best chance for reinflating dried tissues with dilute KOH or ammonium hydroxide solution.

Very best,


negative thought on A. velatipes
By: R. E. Tulloss (ret)
2009-05-28 01:19:13 +03 (+0300)

Amanita velatipes and A. multisquamosa both have an annulus that is funnel-shaped at first. This form persists quite a while before the annulus collapses. These taxa have a fragile annulus that breaks during expansion of the fruiting body. So we still don’t have a name. I’m going to look into my field notes to see if there is anything on the volva in sp. S1 and it’s ilk…

Very best,


Found more today…
By: AmatoxinApocalypse (AmatoxinApocalypse)
2009-05-28 00:38:22 +03 (+0300)

The ones I found today definitely resembled something in the A. pantherina group, ill include the pics of today’s finds with this observations since they are from the same patch.

I am very excited to add this one to my herbarium.

No scope…
By: AmatoxinApocalypse (AmatoxinApocalypse)
2009-05-27 15:53:16 +03 (+0300)

I do not have a microscope to check things out, ill see if I can find someone that can look at them for me, I have plenty of dried specimens to study (10).

By: R. E. Tulloss (ret)
2009-05-27 15:39:56 +03 (+0300)

I think it is reasonable to consider the eastern pantherina cousins like velatipes and multisquamosa. They can be segregated from A. species S1 by spores size and shape for starters. A. multisquamosa is common in several of my collecting areas; however, my experience with A. velatipes has been limited in recent years (maybe I’m not out on the right days?). If I knew precisely what A. russuloides was, that would be a help in this situation, also. MY feeling is that the color is to uniform for multisquamosa, which usually has a broad pallid margin with a disc in the yellow to brown range. Also, the striations in multisquamosa are longer in proportion to the cap radius. The photos suggest to me an entity smaller than I have seen in velatipes (but that’s usually not a good character to use in eliminating a name). Can you get spores measurements? (Side veiw only with apiculus and both ends of the spore in focus.)

Very best,


New images
By: AmatoxinApocalypse (AmatoxinApocalypse)
2009-05-27 04:31:56 +03 (+0300)

I added two new images at the bottom, note the one bursting from the “egg” and the caps color, hope this helps.

It says on your page rod that this one resembles section vaginata before the bulb is exposed, I did not think this at all when I first saw them, also I think they only resemble section vaginata when they have been exposed to the rain and the ring/warts have washed off.

They were growing under oak trees, some of the mature specimens had shaggy stipes with many rings.

I thought they looked like A. multisquamosa or A. velatipes, im not saying they are either of those but those two look very similar to me.

By: AmatoxinApocalypse (AmatoxinApocalypse)
2009-05-27 04:27:05 +03 (+0300)

the margin is striated, almost translucent striated when waterlogged.

By: Johannes Harnisch (Johann Harnisch)
2009-05-27 04:07:12 +03 (+0300)

I don’t think it is A pantheroides either……
see http://www.rogersmushrooms.com/...

pantherinoides doesn’t occur in eastern US as far as I know..
By: R. E. Tulloss (ret)
2009-05-27 02:00:39 +03 (+0300)

I would suggest the species I know from South Carolina that may be undescribed and that I call “species S1.” Look at the small image just above the text at the following address:



Created: 2009-05-26 23:39:05 03 (0300)
Last modified: 2009-05-26 23:39:05 03 (0300)
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