Amanita fulvopulverulenta - Amanitaceae.org - Taxonomy and Morphology of Amanita and Limacella
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name Amanita fulvopulverulenta
name status nomen acceptum
author Beeli
english name "Fulvous-powdered Lepidella"
intro The following description is based on Beeli (1935).
cap The cap of Amanita fulvopulverulenta is 90 - 100 mm wide, flattened-convex, fleshy, with a slightly prominent umbo, with a slightly striate margin. The cap is pale pinkish brown covered with brownish-red, powdery remains of the volva
gills The gills are free, slightly yellowish, and somewhat rounded at the end near the stem.
stem Its stem is 120 - 170 × 10 - 20 mm, solid, and cylindric. The surface is fibrillose to glabrous, white or slightly tinted red.  The flesh is whitish but turns pink when cut.  The stem is easily separated from the cap.  The stem's bulb is spindle-shaped or somewhat turnip or carrot shaped.  The limb of volva on the top of the bulb is not very persistent.  On the other hand, the ring on the stem is said to be persistent.  This is an odd combination of characters for a species that has been thought to be assignable to sect. Amidella.
spores Beeli reported the spores as measuring 7 - 8 × 4 µm, amyloid, and elongate to cylindric.  Gilbert's spore measurements are 7.5 - 11.3 × 3.7 - 5.0 µm.
discussion The present species was originally described from the Democratic Republic of Congo in dry forests.

E.-J. Gilbert's comment that this species is very similar to A. goossensiae Beeli is not borne out by his own spore data (1941).  Moreover, as noted above the presence of a bulb and a weak-limbed volva is unusual in sect. Amidella, while the stipe base in A. goossensiae lacks a bulb and is enclosed in a very robust volval sac—characters typical of sect. Amidella

On the other hand, the pigments, spore shape, flesh changing to pink when cut, membranous volva that has a powdery inner-layer, and narrow spores are all indicators that have been taken to indicate that a species belongs in sect. Amidella [typified by the American species A. volvata (Peck) Lloyd].

Madame Goossens' painting shows a section of a button with a very distinct bulbous base.  In the somewhat macroscopically similar A. goossensiae Beeli and A. fulvosquamulosa Beeli, Madame Goossens carefully distinguished the flesh of the totally elongating stem from the strongly thickened volval sac.  That she failed to do so in the case of the present species suggests that it had a true bulb.  It should be noted that I have never revised dried material.  If Madame Goossens' painting is correct, then A. fulvopulverulenta would be an exception to the dominant stipe and volva development in section Amidella.—R. E. Tulloss, K. Mighell
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