Amanita annulatovaginata - Amanitaceae.org - Taxonomy and Morphology of Amanita and Limacella
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name Amanita annulatovaginata
name status insufficiently known
author Beeli
english name "African Slender Caesar"
intro The following description is based on the original description of Amanita annulatovaginata and (Gilbert 1940 & 1941).
cap The cap of Amanita annulatovaginata is 80 - 90 mm wide, ovoid then plano-convex, slightly umbonate, umbrinous brown to fuligineous, and undecorated.  The cap margin has long striations.  The flesh is white and thin.
gills The gills are free and white.  The short gills have not been described.
stem Its stem is 180 - 190 × 7 - 8 mm, cylindric, stuffed, undecorated, bistre, and brownish-black.  The ring is superior, submembranous, white, and easily broken.  The volva is saccate, membranous, ample, and bistre or umber.  The flesh is white.
odor/taste Neither taste nor odor were recorded for this mushroom.
spores Spores from the type and a another collection having a water color suggesting that it also belongs to the type variety are illustrated in (Gilbert 1940).  These 9 spores are 11.1 - 14.9 × 6.5 - 10.5 µm and ellipsoid to elongate and inamyloid.

The following data also comes from Gilbert's drawings:

Spores from the type of A. annulatovaginata var. atra are 9.9 - 11.1 × 6.6 - 7.8 µm [5 spores] and ellipsoid.

Spores from var. citrina are 12.3 - 12.9 × 7.9 - 8.3 µm [2 spores] and ellipsoid to elongate.

Spores identified only at the species rank, but not the same size as those of the type are 10.3 - 11.9 × 6.0 - 7.7 µm [4 spores] and are ellipsoid to elongate.
discussion The present species was originally described from the Democratic Republic of Congo in forest.

Madame Goossens' watercolors show the stipe completely distinguishable from the volval sac and the annulus more or less persistent at maturity.

Beeli distinguished four varieties within this species.  In addition to the type variety, he proposed
Gilbert (1940) proposed that var. atra and var. amethystina were essentially identical with the type variety.  However, his argument is problematic.  See the "discussion" data field of the technical tab of this page.

The form of the fruiting bodies suggests placement of A. annulatovaginata and two of its varieties in stirps Hemibapha, but there is insufficient information to feel confident about this placement.—R. E. Tulloss
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