The following is largely based on the original description
The cap of Amanita pyramidiferina is up to 70 mm wide, off-white to drab cream or warm
pale cream-buff, flattened convex then plane, smooth, dry
or vaguely viscid, with a nonstriate and slightly appendiculate margin. Volval remains
are fairly small conical warts, white to off-white, or rarely somewhat
buff, often tending to disappear.
The gills are free, crowded, thin, white or
slightly cream, with a concolorous edge. The short gills are present in at least one series.
The stem is up to 70 × 8 mm, white to pale cream, fibrillose or granulose to slightly squamulose all over the stem. The ring is membranous, skirt-like, white to pale cream, and striate above. The bulbous base is small, rounded, white becoming slightly buff with age, smooth, with one or two concentric ridges of volva on the upper part.
The spores measure (7.2-) 10.5 - 12.6 × (5.1-) 6.9 - 9.0 µm and are ellipsoid to elongate and amyloid.
Clamps are present at bases of basidia, sometimes more easily seen in other tissues than at
bases of basidia.
Wood describes the mushroom as occurring in
sclerophyll forests from the state of New South Wales, Australia. A
sclerophyll forest in the Australian bush is a forest of hard-leaved plants including Eucalyptus in the
Wood assigns this species to stirps Ravenelii
but his description of the volval remnants on the cap contradict this.
The volva in the cap warts, which is extremely important in Bas' systematics, should have plentiful filamentous hyphae
as well as having a wart base that is entirely dominated by hyphae. Wood states that the
pyramidal warts are dominated by inflated cells. The description
includes no mention of the hyphae dominated base of the warts. Although
spores in stirps Virginea are generally smaller than in A.
pyramidiferina, the present species fulfills other requirements of belonging there.
The similarity on this point leads us to explore the reasons Wood gives for segregating the two "pyramid
building" species. A review of the two original descriptions show
that many of the distinctions given do not hold up. The remaining
distinctions are as follows: Amanita pyramidiferina may have
fewer clamp connections at bases of basidia and is reported to have a
far more persistent annulus and a far broader, and more distinct, bulb
at the stipe base. Considering that the age of a fruiting body can
influence the ability to detect clamps at the bases of basidia and that
weather conditions may influence such things as the persistence of a
ring and the breadth of a bulb, we would hope that someone would take
the time to revise the two species in question.—R. E. Tulloss and L. Possiel
(“pyramidiferinus”) A. E. Wood. 1997.
Austral. Syst. Bot. 10: 773, fig. 26(a-e).
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The field may contain magenta text presenting data from a type study
and/or revision of other original material cited in the protolog of the present taxon.
Macroscopic descriptions in magenta are a combination of data from the protolog and
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Olive text indicates a specimen that has not been
thoroughly examined (for example, for microscopic details) and marks other places in the text
where data is missing or uncertain.
The following material is based entirely on the protolog of this species, which does not meet contemporary standards for Amanita taxonomy.
from the protolog: [-/-/-] (7.2-) 10.5 - 12.6 × (5.1-) 6.9 - 9.0 μm, (Q = 1.33 - 1.71), amyloid, ellipsoid to elongate.
[Note: Data provided is not sufficient to permit generation of a sporograph.—ed.]
In sclerophyll woodland.
from the protolog: AUSTRALIA: NEW SOUTH WALES—Windsor, Howes Valley, Tari Crk., 11.v.1988 A. E. Wood and F. K. Taeker s.n. (holotype, UNSW 88/166).
—R. E. Tulloss
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