Observation 99937: Amanita sect. Vaginatae sensu Zhu L. Yang

When: 2012-06-23

Collection location: Big Thicket, Polk Co., Texas, USA [Click for map]

Who: Ron Pastorino (Ronpast)

No specimen available

These were found in the Big Sandy Creek Unit.
Caps were up to 5.8 cm across.
Spores were ~ 9.3-12.0 X 8.2-11.0 microns\ Q(ave.) = 1.13.
These may be similar to RET’s sp-V01.

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Eye3 = Observer’s choice
Eyes3 = Current consensus


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On this one, all I have are some spores,
By: Ron Pastorino (Ronpast)
2012-07-11 03:29:41 +06 (+0600)

but I can send them if you want.
Yes, I did get lucky on my timing this time and I am
getting down to odds and ends. No problem with keeping them separate as there is little left and the post office charges go up disproportionately with container size.

sp-T44 has spore measurements based on what was…
By: R. E. Tulloss (ret)
2012-07-11 03:12:46 +06 (+0600)

apparently a young specimen making “giant” spores on two-spored basidia before the 4-spores per basidium process stabilized. This happens…especially in sect. Vaginatae. So you could have mature material of sp-T44.

Cap colors don’t seem too much like those of sp-T33; but we can’t eliminate that one either as yet.


Maybe we ought to consider two other items from the Texas etc. checklist.
By: R. E. Tulloss (ret)
2012-07-11 03:06:44 +06 (+0600)

Amanita sp-T44 and A. sp-T33. These are based on small abount of material and the actual range of spore size might vary without the average Q value changing very much.


Rats! [edit, new info]
By: R. E. Tulloss (ret)
2012-07-11 02:54:20 +06 (+0600)

The cap is really different (in color) from the cap of the original collection I called “sp-V01.” Moreover, this seems to have a more robust volval sac…with a pointed bottom(?).

I agree that the spore measurements are a very good match to sp-V01 and to the “gray” material represented by David Lewis’ number 9043 which is referenced on the Texas etc. checklist. Your material throws into doubt what I ought to do with David L.’s 9043 (which I only know from dried material)…. Well, I guess there is no doubt that I have to go back and do more work on it.

What you have photographed appears to be something I haven’t seen before in the fresh state in Texas or the adjacent Gulf Coast region. And it’ll take some work to know if it and Lewis 9043 are the same. Looks like I should ask to take a look at your collection. Consider that that just happened.

If you have more of these treasures from east Texas, Ron, maybe you shouldn’t send the stuff to me one collection at a time. The postage is agonna mount up on you. I can wait until you’ve had the chance to post everything to MO.

You certainly hit one heck of a collecting window in June of 2012.

Very best,


By: R. E. Tulloss (ret)
2012-07-11 02:38:06 +06 (+0600)

You saw some treasures in the Big Thicket…with convenient free (with no box tops) spore print.

Very best,


Created: 2012-07-10 20:59:47 06 (0600)
Last modified: 2012-07-10 20:59:48 06 (0600)
Viewed: 96 times, last viewed: 2017-10-15 02:20:51 06 (0600)
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