Amanita monticulosa - Amanitaceae.org - Taxonomy and Morphology of Amanita and Limacella
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name Amanita monticulosa
name status nomen acceptum
author (Berk. & M. A. Curtis) Sacc.
english name "Little Mountains Amanita"
intro The following description is based on Jenkins (1977).
cap The cap of Amanita monticulosa is 50 - 80 mm wide, convex to plano-convex, occasionally with slight umbo, [sometimes?] cracking into irregular regions, slightly viscid when moist, thin fleshed, with faintly or nonstriate margin.  The volval remnants are present as angular, pyramidal, or truncate warts becoming more flocculent towards the margin of the cap.
gills The gills are free, ventricose, and distant from the stem.
stem The stem is 30 - 60 × 4 - 8 mm, slightly tapering upward, white, stuffed to hollow, fibrillose, with scaly to felted-subfloccose volval patches at the top of the bulb.  The basal bulb is subglobose to ovoid. The ring is thick, distant from the top of the stem, and floccose [on its bottom?].
odor/taste We know of no information about odor or taste for this species.
spores The spores measure 10 - 11.2 (-12.5) × 7 - 8 (-9) µm and are broadly ellipsoid to ellipsoid and are inamyloid.
discussion Originally described from South Carolina, USA, from sandy soil.

Jenkins comments that this species differs from taxa similar to Amanita pantherina (DC. : Fr.) Krombh. because the volva is not ocreate.  He mentions that the species is distinct from the poorly known A. agglutinata (Berk. & M. A. Curtis) Lloyd which is separated by its more elongate spores.  It''s quite possible that the extensively cracked surface of the cap in the type was an accident due to environmental factors.  Unfortunately presence or absence of clamps in the fruiting body could not be determined by Jenkins due to the condition of the type.  The colors of the fruiting body are unknown.—R. E. Tulloss
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