The following is based on the protolog, a second description of Beeli (1935), and a third from Gilbert (1940 & 1941).
The cap of A. goossensiae is 55 - 100 mm wide, terracotta to brownish orange, plano-convex, and lightly depressed in the center at maturity. The cap can be without volval remnants or can be densely squamulose with bits of the inner layer of the volva that is typical of the volva in most species of Amanita section Amidella. The volval remnants are pallid in the above illustrations but become darker than the pileus ground color with aging. The margin of the cap is striate and appendiculate. The flesh of the cap is white and becomes pinkish when cut or bruised.
The gills are free, attenuate at both ends, faintly pinkish white, and 10 mm broad. The gills have markedly flocculent edges. There is no information about the short gills.
The stem is 100 - 160 × 6 - 10 mm long; white at first, and it bruises pinkish brown especially in flocculose areas in the lower half. There is a somewhat weakly structured annulus that is white, skirt-like, and superior; however, it often disappears or simply leaves a flocculent ridge around the upper stem. The volva is saccate, up to 50 × 35 mm or larger and quite robust. The limbs are rather thick, and their external color is or becomes reddish ochraceous.
Odor and taste of this species are unrecorded.
Limited spore data were reconstructed from the drawings of Gilbert (1940)as follows: 9.0 - 10.3 × 4.3 - 6.2 μm, ellipsoid to elongate and amyloid. There is no information regarding clamps on basidia, but they are probably not present.
The species was described originally from 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 is derived from the protolog of the present taxon, (Beeli 1935), and (Gilbert 1940 & 1941).
from protolog: 50 - 70 mm wide, pale or dark brick-color, plano-convex; context white, fleshy, thin; margin "long"-striate; universal veil in radially arrange scales (per figure).
Beeli (1935): additions—slightly depressed over disc; context firm, becoming pink on exposure; margin striate (ca. 0.15R (per figure)); universal veil in rings of scales, darker than pileus ground color, orange-brown in mature material of figure. [Note: It would be consistent with the reported oxidation reaction of the context in A. goossensiae and the "brick staining" reaction typical of similar taxa in sect. Amidella if the inner layer of the universal veil (which is the probable source of the scales on the pileus) is originally white and oxidizes to brown as the basidiome ages.—ed.]
Gilbert (1941): 55 - 100 mm wide, pale flesh-colored at first then flesh-colored, at first globose, then plano-convex, sometimes slightly depressed over disc; context thin, whitish, becoming pink; margin long (sic) striate; universal veil as scale-like remnants, concentrically organized, fleshy-fulvous.
[Note: As time passed, the authors added characters they apparently derived from the watercolors, but also preserved previous errors (such as calling the cap striations "long").—ed.]
from protolog: free, white or whitish; lamellulae not described.
Beeli (1935): additions—subacute at both ends, whitish tinted with pink, 10 mm wide.
Gilbert (1941): free, density not recorded, whitish or pale pinkish, attenuate on both ends, 10 mm broad; lamellulae not described.
from protolog: 100 - 120 × 6 - 8 μm, pink-brown, cylindric, glabrous, totally elongating (per figure); context hollow, white; partial veil superior, membranous, thin, white or whitish, detersile (per figure); univeral veil saccate and up to 50 × 35 mm (both per figure), ample, thick, ochraceous-reddish. [Note: In this description, color words in French and in Latin parts of the protolog have slightly different translations into English, we provide both translations as alternatives.—ed.]
Gilbert (1941): 100 - 160 × 6 - 13 μm, pale pink at first, then pale brownish flesh-colored, glabrous, totally elongating (per figure); context stuffed to hollow, whitish, becoming pinkish; partial veil ascending, membranous, thin, whitish, pendent; universal veil as saccate volva, membranous, ample, thick, persitent, with free limb, becoming flesh-colored-fulvous. [Note: Data introduced by Gilbert (e.g., greater maximum stipe length and width) must be derived from data accompanying Goossens 622.—ed.]
Beeli (1935): filamentous hyphae interwoven, thin to thick.
from protolog: 8 - 10 × 5.5 - 6 μm, hyaline, ellipsoid, with cell wall slightly tinted. [Note: Sporograph not generated.—ed.]
Gilbert from type (1940): [2/1/1] (9.0-) 9.3 - 9.6 (-10.3) × 5.7 - 6.0 (-6.4) μm, (L = 9.4 μm; W = 5.8 μm; Q = 1.55 - 1.68; Q = 1.62), hyaline, smooth (per figure), ellipsoid to elongate; apiculus sublateral and subcylindric (per figure); contents not described; white in deposit. [Note: Spore measurements are taken from the two drawings of (Gilbert 1940: tab. XXVIII (fig. 2)) that are in apparent lateral view.—ed.]
Gilbert from Goossens 622 (1940): [6/1/1] 9.2 - 10.0 × 4.3 - 6.2 μm, (L = 9.7 μm; W = 5.2 μm; Q = 1.58 - 2.14; Q = 1.87), hyaline, smooth (per figure), ellipsoid to elongate; apiculus sublateral and subcylindric (per figure); contents not described; white in deposit. [Note: Spore measurements are taken from the six drawings of (Gilbert 1940: tab. XXVIII (fig. 3)) that are in apparent lateral view.—ed.]
from protolog: Terrestrial.
from protolog: CONGO, DEMOCRATIC REPUBLIC OF: PROV. EQUATEUR—Lisala, Valley of Motima River [2°09'01" N/ 21°30'59.5" E, 377 m], iii.1924 Goossens 403 (lectotype, BR, watercolor), 533 (syntype, BR). [Note: Locality in protolog is given as "Bangala." This is altered to "Lisala" in Beeli (1935).—ed.]
Beeli (1935): CONGO, DEMOCRATIC REPUBLIC OF: PROV. EQUATEUR—Territoire Lisala - Binga [2°23'41" N/ 20°25'25" E, 361 m], ix.1927 Goossens 622 (BR, watercolor); Lisala, Valley of Motima River [2°09'01" N/ 21°30'59.5" E, 377 m], iii.1924 Goossens 403 (lectotype, BR, watercolor), 533 (syntype, BR).
Gilbert (1940 & 1941): CONGO, DEMOCRATIC REPUBLIC OF: PROV. EQUATEUR—Territoire Lisala - Binga [2°23'41" N/ 20°25'25" E, 361 m], ix.1927 Goossens 622 (BR, watercolor); Lisala, Valley of Motima River [2°09'01" N/ 21°30'59.5" E, 377 m], iii.1924 Goossens 403 (lectotype, BR, watercolor).
Gilbert reduced A. fulvosquamulosa to a form of the present species. Despite the limited reliable data on the two taxa, this recombination seems premature. Based on the limited information available, A. goossensiae differs from A. fulvosquamulosa as follows:
A. goossensiae has weakly membranous partial veil at least at first, while A. fulvosquamulosa has only flocculence or pulverulence on the apical region of the stipe.
A. goossensiae is illustrated with a distinctly striate pileus margin at maturity, while A. fulvosquamulosa is illustrated with a nonstriate margin at maturity.
A. goossensiae is illustrated as depressed over the disc in mature material, while A fulvosquamulosa is said to have a slight umbo at maturity.
A. goossensiae is illustrated as having ventricose lamellae with breadth about 7.5% of the stipe length, while A. fulvosquamulosa is shown to have lamellae with a straight free edge and with breadth about 4% of the stipe length.
?? more ??
Because the sample size of spore data is so small in both cases we can't make a definitive comparison of spore size and shape. Moreover, we do not know the grounds on which Goossens 622 was assigned to the present species; and data from its spores make up over 40% of the available data points. Nevertheless, the following figure (for what it may be worth) provides a comparison of sporographs for the two taxa. It appears that we cannot exclude the possibility that the spores are very similar.
The types and other related materials of the two taxa require a modern revision.
—R. E. Tulloss
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