The following information comes from the original description of this species (Bas and Hatanaka 1984).
The cap of A. miculifera is 70 - 120 mm wide, conical with an obtuse apex to plano-conical, probably subviscid, with inflexed, nonsulcate, appendiculate margin. The cap is pearl gray. The volva is present as small and low subpyramidal warts, towards the margin as small moderately dark gray volval crumbs or thin, subfelted-subfloccose disintegrating patches.
The gills are free, crowded, rather narrow, and whitish or white. The short gills are very gradually attenuate.
The stem is 140 - 240 × 15 - 25 mm, grayish-whitish to pale gray, subcylindrical, and probably solid. On the lower stipe there is a white to pale gray layer of somewhat felted to somewhat finely hairy material. There is a dense region of cottony-floccose material at the top of the stipe (which is, otherwise, exannulate). The volval remnants on the lower stem and bulb are described by Bas and Hatanaka as scattered, inconspicuous, floccose-felted fragments "provoking formation of small recurving scales on [the] upper part of the bulb.
The spores measure (9.0-) 10.0 - 12.5 (-13.5) × (6.0-) 6.5 - 8.0 µm and are amyloid and broadly ellipsoid to ellipsoid to oblong-ellipsoid. Clamps are distinct at bases of basidia.
This species was originally described from Japan (Nagano Prefecture, Honshu).
Due to delays in data processing at GenBank, some accession numbers may lead to unreleased (pending) pages.
These pages will eventually be made live, so try again later.
The following text may make multiple use of each data field.
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
additional observations made on the exiccata during revision of the cited original
The same field may also contain black text, which is data from a revision of the present
taxon (including non-type material and/or material not cited in the protolog).
Paragraphs of black text will be labeled if further subdivision of
this text is appropriate.
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 derived from the protolog of the present taxon (Bas and Hatanaka 1984).
The original description of this species (Bas and Hatanaka 1984) is available here in the form of a PDF. (open)
from protolog: Basidiome large.
from protolog: 70 - 120 mm wide, pearl gray (whitish-grayish, ca. 10YR 8/1 slightly tending toward 7.5YR 8/0, between 1A1 and 1B1), conic with obtuse apex to plano-conic, probably subviscid; context not recorded; margin non-sulcate, at first rather strongly appendiculate, less so with age, inflexed; universal veil at center as small low pyramidal warts with dark gray base (7.5YR 6/2 to 7.5YR 5/2) and pale apex, towards margin passing gradually into small moderately dark gray volval crumbs, near outer margin as thin subfelted-subflocculose disintegrating patches.
from protolog: free, crowded, whitish or white, rather narrow proportionately, with edge grayish or whitish and pulverulent at first; lamellulae very gradually attenuate.
from protolog: 140 - 240 × 15 - 25 mm (with length inclusive of pseudorrhiza), grayish white to pale gray, subcylindric; bulb ventricose with pseudorrhiza, 35 - 40 mm wide, strongly radicating (with pseudorrhiza "about as long or slightly longer than bulb and part of stipe above bulb together"; context not recorded, but "probably solid"; partial veil whitish to grayish-whitish, floccose-lanose, incoherent, at first in rags on pileus margin and upper ca. 30 - 40 mm of stipe, deciduous; universal veil as appressed subfelted-subtomentose to flocculose-subsquamulose remnants, somewhat pale gray, here and there provoking small recurved scales on upper part of stipe's bulb.
from protolog: ca. 15 - 20 μm thick, (?still) densely ramose. [Note: Although we cannot be sure, the word "still" with a question mark perhaps reflects uncertainty over whether the material examined was not fully mature.—ed.]
from protolog: ca. 45 - 60 × 8.5 - 12 μm, not uncommonly irregularly shaped, 4-sterigmate; clamps present, "distinct."
from protolog: On pileus: elements irregularly disposed in general, but elongate cells and chains often in more or less anticlinal orientation; filamentous hyphae 4 - 15 μm wide, fairly abundant, broad-celled, branching; inflated cells abundant, ellipsoid to ovoid to priform to clavate (and slightly less frequently subglobose to globose), 25 - 80 (-95) × 20 - 80 μm, terminal singly or in 2-cell chains,almost colorless in upper part of warts, fairly dark brown in lower parts; clamps present. On stipe: not described.
from protolog: longitudinally acrophysalidic; filamentous hyphae not described; acrophyslides up to 410 × 45 μm; vascular hyphae scarce; clamps present.
lamella edge tissue
from protolog: as rather narrow sterile strip; inflated cells narrowly to broadly clavate, rather small, thin-walled, colorless, 12 - 36 (-48) × 6.5 - 17.5 (-32) μm, partly short chains, then with subtending cells much smaller than terminal cell.
from protolog: [20/1/1] (9.0-) 10 - 12.5 (-13.5) × (6.0-) 6.5 - 8 μm, (Q (1.20-) 1.30 - 1.80; Q = 1.60), hyaline, colorless, thin-walled, amyloid, broadly ellipsoid to ellipsoid to oblong ellipsoid to elongate, at least somewhat adaxially flattened (per figure); apiculus sublateral and cylindric (per figure), relatively large and broad; contents not described; color in deposit not recorded.
from protolog: At 1000 m elev. Under Abies homolepis.
from protolog: "The macroscopic description...is based on a series of excellent, very detailed colour photographs and observations on the well-dried speciemens.
"Amanita miculifera is rather ... [similar] to A. onusta (Howe) Sacc. from eastern and north-eastern North America (Bas 1969: 428). Just as the latter species it ha a grey, friable volva forming warts on the pileus, an incoherent, lanose-floccose, finally disappearing partial veil, clamped basidia and in addition it has spores of about the same size and with the same length-width ratio.
"Nevertheless, the outward appearance of A. miculifera is rather different from that of A. onusta. Besides...the somewhat larger size, the more conical pileus and the more prominent pseudorrhiza, the reasons for this difference are to be found mainly in the properties of the volva:
"The volval layer of A. miculifera is thinner than that in A. onusta and therefore the volval warts on the pileus are smaller and less prominent and do not give an echinate look to the pileus.
"The volval layer of A. miculifera consists, at least at the centre of the pileus, of a grey inner layer and a paler to almost whitish outer layer; accordingly the volval warts have a grey base and a pale apex. Under the microscope the inflated cells of the volva of A. onusta are darker than those of A. miculifera and are just as dark or even darker in the tips of the volval warts.
"The arrangement of the elements in the volva of A. miculifera is quite irregular...and the inflated cells are not arranged in rather long, parallel, erect rows as in A. onusta (see Bas 1969: fig. 157); consequently the volval warts are not so neatly conical as those in A. onusta.
"The volval remnants at the base of the stipe of A. miculifera are inconspicuous and white to whitish and do not or hardly form recurving scales, whereas in A. onusta the coloured volval warts and/or scales at the base of the stipe are very characteristic.
"In the key to the stirp[e]s of subsection Solitariae of Amanita section Lepidella published by Bas (1969: 386), A. miculifera does not key out with A. onusta in stirps Microlepis, but in stirps Virgineoides which has to be emended in order to include also species with a coloured volva."
The original description of this species (Bas and Hatanaka 1984) is available here in the form of a PDF. (open)—R. E. Tulloss
Information to support the viewer in reading the content of "technical" tabs
can be found here.
Bas & Hatan.
1. Amanita miculifera, Japan.
2. Amanita miculifera, Japan.
C. Bas - (1-2) Japan (drawings from the protolog courtesy of Persoonia, Leiden, the Netherlands).
Each spore data set is intended to comprise a set of measurements from a single specimen made by a single observer;
and explanations prepared for this site talk about specimen-observer pairs associated with each data set.
Combining more data into a single data set is non-optimal because it obscures observer differences
(which may be valuable for instructional purposes, for example) and may obscure instances in which
a single collection inadvertently contains a mixture of taxa.