The cap of A. bubalina is 8 - 30 mm wide, hemispherical
to convex, pale ochraceous, paler at the margin, dry, with an appendiculate, nonsulcate margin. The cap is
covered with adnate, small, pointed, felted, concolorous warts.
The gills are subdistant, adnexed to almost free, rather broad, white at first,
later pale ochraceous to avellaneous. The short gills are attenuate.
The stem is 12 - 30 × 12 - 20 mm, tapering upward, solid, pale ochraceous, floccose,
with several circles of very distinct, concolorous, adnate, appressed, scale-like to erect, wart-like
remnants of volva at the base. There is a white subapical ring that is felted-membranous and rather persistent.
The spores measure (6.5-) 7 - 9 (-9.5) × 5 - 6.5 µm and are amyloid and broadly
ellipsoid to ellipsoid. Clamps are present at bases of basidia.
The original description says the collecting site was at over 1,000 m elev. in forest in Argentina.
Bas placed A. bubalina in his stirps Vittadinii. It differs from most of the taxa in that
stirps by occurring in forest.—R. E. Tulloss
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L; isotype, in herb. E. Horak
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 text below is largely derived from the protolog (Bas 1969).
from protolog: 8 - 30 mm wide, pale ochraceous, paler at margin, hemispherical to convex, dry; context white; margin non-sulcate, appendiculate; universal veil as concolorous warts, adnate, small, pointed, felted.
from protolog: adnexed to almost free, subdistant, white at first, later pale ochraceous to avellaneous, rather broad, with concolorous and entire edge; lamellulae attenuate.
from protolog: 12 - 30 × 12 - 20 mm, pale ochraceous, narrowing upward, floccose; bulb broadly clavate to abruptly napiform; context white, later yellow in bulb, firm, solid; partial veil white, felted-membranous, pendent, rather persistent, subapical; universal veil as several circles of very distinct scales and erect warts at base of stipe and on bulb surface, concolorous, adnate, appressed.