The following is based on the description of Bas (1969) and from RET's revision of a few recent collections.
The cap is 50 - 100 mm wide, pallid to pale gray, and expanded convex. It is decorated with greenish to green to blue-green pulverulence of the volva which fades to brown and at last to pallid grayish. The cap's margin is nonstriate and appendiculate (at least at first).
The gills are narrowly attached to the stipe to free, white to pinkish white, attenuate at both ends, 5 mm broad, and with pulverulence along their free edges.
The exannulate stem is 130 - 140 × 6 - 20 mm, white, cylindric, with white pulverulence at the apex or in the upper quarter of its length. The stem's bulb is marked and turnip-shaped to spindle-shaped, and 25± mm wide.
The taste is bitter. The odor is slight to almond-like. Beeli says that bruising the flesh of the will cause a liquid to be exuded that carries an almond odor.
The spores from recent collections from Zambia measure (8.3-) 9.1 - 12.0 (-12.4) × (4.0-) 4.4 - 5.1 (-5.5) µm and are elongate to cylindric and amyloid. [Bas ( 1969) examined the holotype and reports on spore measurements as follows: 8 - 9.0 (-10.5) × 4.5 - 5.5 µm. The spores are ellipsoid to elongate to cylindric.] Clamps are absent from bases of basidia.
Beeli stated the species occurs with Gilbertiodendron (=Macrolobium) dewevrei.
The species was originally described from the Democratic Republic of Congo and is known from Central Africa.
The editors of this site owe a great debt to Dr. Cornelis Bas
whose famous cigar box files of Amanita nomenclatural information
gathered over three or more decades were made available to RET for computerization
and make up the lion's share of the nomenclatural information presented on this site.
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 not directly from the protolog of the present taxon or (Bas 1969) is based on original research by R. E. Tulloss.
Bas (1969): 50 - 60 mm wide, grayish-brownish olive to grayish olivaceous brown, broadly parabolic to planar, with pileipellis hardly visible and unpolished; context firm, white; marginnonsulcate, slightly appendiculate; universal veil as dense covering of brown pulverulent material, as shapeless to conic warts over disc, outside of disc region as continuous layer concolorous with pileipellis.
Bas (1969): free, rather crowded, pinkish-whitish, rather narrow to moderately broad; lamellulae attenuate.
Bas (1969): 130 - 140 × 7 - 14 mm, subcylindric, near apex with white pulverulence-flocculence; bulb hardly thickened, slightly rooting to slenderly clavate, 12 - 14 mm wide; context solid to stuffed, white, firm, when broken "emitting a fluid smelling like almonds"; partial veil flocculose-fibrillose, fugacious, in young material whitish near stipe and gray near pileus margin; universal veil with or without olivaceous brown to brown pulverulent-subverrucose material near stipe base.
Bas (1969): Odor not recorded except for the almond-smelling liquid emitted by broken stipe tissue. Taste bitter.
Bas (1969): rather thin, slightly gelatinizing near surface with age; filamentous hyphae 2 - 6 μm wide, colorless.
Bas (1969): 30 - 40 × 7.5 - 8 μm, mostly 4- or 2-sterigmate, sometimes perhaps 3- and 1-sterigmate; clamps lacking.
Bas (1969): On pileus: with pigment intracellular; filamentous hyphae 3 - 8 μm wide, scattered, inconspicuous; inflated cells globose to ellipsoid, more rarely pyriform or clavate or elongate, 20 - 60 μm [?long], rarely up to 80 & 55 μm, often brown, sometimes lacking pigment, usually in more or less anticlinal parallel chains (with anticlinal arrangement most easily seen in warts over disc and, elsewhere, in material closest to pileipellis), sometimes singly terminal; vascular hyphae lacking or very scarce. On stipe: not described.
Bas (1969): longitudinally acrophysalidic; acrophysalides clavate-fusiform, up to 350 × 40 μm, sometimes with conspicuous flat elliptical refractive bodies up to 25 μm wide in acrophysalides.
lamella edge tissue
Bas (1969): filamentous hyphae rather scanty; inflated cells small, globose to pyriform to broadly clavate, up to 30 μm wide, in terminal chains.
Bas (1969) from basidiomes with "mainly" 4-sterigmate basidia: [20/2/1] 8.0 - 9.5 (-10.5) × 4.5 - 5.5 μm, (Q = 1.55 - 2.05; Q = 1.85), colorless, hyaline, thin-walled, amyloid, elongate to cylindric, often subreniform; apiculus not described; contents subgranular, refractive; white in deposit.
Bas (1969) from basidiomes bearing basidia with "many" 2-sterigmate basidia (also with 4- and perhaps 3- and 1-sterigmate basidia): [10/1/1] 9.5 - 13.0 (-15.0) × 4.5 - 5.5 (-6.5) μm, (Q = 1.90 - 3.0; Q = 2.4).
Bas (1969): Republic of Congo: Solitary. Terrestrial in dry forest of Gilbertiodendron (=Macrolobium) dewevrei (De Wildem.) Léon.
Bas (1969): CONGO, DEMOCRATIC REPUBLIC OF: PROV. EQUATEUR—Territoire Lisala - Binga [2°23'41" N/ 20°25'25" E, 361 m], 8.xi.1929-16.i.1930 M. Goossens 911 (holotype, BR).
ZAMBIA: CENTRAL PROV.—btwn. Lusaka and Ndola, ca. Kapiri, 14-24.xii.2000 David Arora 00-387 (SFSU; RET 344-3). COPPERBELT PROV.—off Kitwe-Ndola Rd., Greystone Farm, 14-24.xii.2000 David Arora 00-371 (SFSU; RET 344-2), 00-372 (SFSU; RET 345-4).
Bas (1969): "The type consists of three more or less complete, dried specimens, which I have marked A-C, and a great number of fragments. Not all the specimens were collected at the same time. It is, however, impossible now to reconstitute the original collection.
"Specimen A, probably represented by the left and the right figures published by Beeli (1935: pl. 3 (fig. 6)) and the two right figures of those published by Gilbert (1941: tab. 68), seems to me to be the most typical specimen of the type collection: I have studied it extensively. Specimen B, represented by the middle figures on Beeli's plate and the left one on Gilbert's plate, has no mature spores. Specimen C has aberrant spores and basidia as mentioned above. The seven largest fragments of caps of the type collection have spores resembling thoe of specimen A.
"The aberrant spores of specimen C seem to be explained sufficiently by the occurrence of abnormal basidia, but as the type does not consist of a single collection it should be kept in mind that specimen C may belong to another taxon.
"Because of the greyish olive pulverulent cap, smell of almonds, and bitter taste, this tropical species from the Congo is very well characterized. On account of the more or less erect, parallel rows of brown cells in the remnants of the volva on the cap, lacking clamps, and elongate spores, it is placed here near A. cinereoconia. In appearance A. odorata resembles A. lanosa and A. lanosula in stirps Chlorinosma, occurring in the same region, but in those two species clamps are present and the elements of the volva are irregularly disposed."
—R. E. Tulloss
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