Observation 26243: Amanita sect. Caesareae Singer

When: 2009-09-21

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

Who: Ron Pastorino (Ronpast)

No specimen available

It looks like I have to add yet another unknown(to me) Amanita from the Big Thicket area. It doesn’t seem to match anything I can find in my references or Rod’s Tx list. Apparently in the sect. Caesareae with inamyloid spores and lacking a bulb but having an annulus.
They had caps about 7 cm across and up to 10.2 cm stipes. Striations on the grayish tan cap were about 0.5cm.
The spores shown in Congo red were interesting and were ~ 12 X 6.5 microns with a fair amount of variation.

[admin – Sat Aug 14 01:58:33 +0000 2010]: Changed location name from ‘Big Thicket, Tyler Co. Texas’ to ‘Big Thicket, Tyler Co., Texas, USA

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Added Rod’s alteration of spore picture
By: Ron Pastorino (Ronpast)
2009-10-06 21:04:16 PDT (-0700)
in which he,(as done in #26313), estimates Q values based simply by measuring, on the enlarged photo, the ratios of the lengths over the widths of various spores. He also notes some possibilities based on the results. Thanks Rod

Created: 2009-10-04 21:06:34 PDT (-0700)
Last modified: 2012-06-06 14:41:41 PDT (-0700)
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