This text is derived from the original description
of Amanita melleialba.
The cap of A. melleialba has a central region that
is honey-colored or yellowish or yellow with an orange tint;
beyound this region, the color fades to yellowish or whitish
toward its tuberculate striate margin. The cap is
28 - 50 mm wide. Its center is often slightly
depressed. The remains of volva on the cap are small,
subconical to granular warts up to 2 mm tall; these are
dirty white to cream to yellowish, randomly arrange or
densely place in the center. The flesh of the cap is
white and unchanging.
Gills of the present species are white and crowded.
There is a fine powery decoration on their free edges.
The short gills are truncate, plentiful and rather evenly
The stem of the present species measures 40 – 80 × 4–8 mm
and is subcylindric or slightly tapering upward; it flares
slightlu at its apex. The stem is
white to cream-colored, covered with white fluffy little
scales above and below the ring. The flesh of the
stem is white; and the stem is loosely stuffed to hollow;
the bulb at the stem's base is subglobose to napiform,
8 – 12 mm wide, and white. Volval remnants are white
to cream-colored fluffy little scales or granules or
form a short flap at the top of the bulf. The stem's
ring hangs from a region 15 – 30 mm below the stem's
apex and is white to cream-colored with a yellow
The odor of this species is indistinct. No taste was
The spores of A. melleialba measure 7.5 – 9.5 (–10)
× (5.5–) 6 – 7 μm and are inamyloid and ellipsoid
(occasionally broadly ellipsoid). Clamps are absent in all
Amanita melleialba appears singly or gregarious
in subtropical forests dominated by the Beech-Oak family
(Fagaceae). It is known from southwestern and
central China (Hunan and Yunnan provinces).
Amanita melleialba is characterized by its small-sized
mushrooms, ellipsoid basidiospores, volval remnants on the
cap that are dominated by inflated cells in
chains of 2–4, and its occurrence in subtropical forests
Amanita melleialba is very similar to
parvipantherina Zhu L. Yang et al. However,
the latter possesses a brownish pileus with shorter
marginal striations, larger spores
(8.5–11.5 × 6.5–8.5 μm), and is found in mixed
forests with Yunnan Pine (Pinus yunnanensis).
Amanita melleialba may be confused with
A. elata (Massee)
Corner & Bas, a species originally described from
Singapore. However, A. elata< has volval
remnants on the pileus that are small, scattered,
irregularly shaped, fluffy-membranous, flat patches,
which are easily washed off by rain, and globose to
subglobose spores.—Z.-L. Yang and R. E. Tulloss
Yang-Yang Cui, Qing Cai & Zhu L. Yang in
Ariyawansa et al.
Fungal Diversity 75: 189.