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Species Information
Summary: Subgenus Amanita. Features include viscid cap that is honey-colored to dirty cream with brown to chestnut to honey-tan color in center, small white patches and warts, crowded white gills, and white to whitish stem with 1) ovoid bulb, 2) volva as short thin limb around stem base or floccose material on upper bulb, and 3) superior, white, persistent ring. |The Tulloss(6) website, accessed July 23, 2020, commented (with Latin names italicized), "Jenkins emphasizes the possibility of a close relationship between the present taxon and A. pantherina (DC. : Fr.) Krombh. The present taxon seems more gemmatoid than pantherinoid given the limbate volval remnants on the bulb and occasional clamp connections on basidia. I don''t see a reason for it to be considered to be a variety of pantherina at the moment; however, I have not yet studied material of the present species in detail." |The Tulloss(6) website, accessed July 23, 2020, lists Amanita praegemmata as a synonym of Amanita pantherinoides. |Western North American material of what has been called Amanita pantherina does not match the DNA sequences of European Amanita pantherina, and a case can be made that Amanita pantherinoides is an appropriate name to use. |36 putative panther/gemmatas from BC were sequenced; 14 corresponded to a Tulloss(6) concept of pantherinoides. 22 were ''pseudobreckonii'', (D. Miller, pers. comm.).
Amanita pantherinoides was described by Murrill from WA, and collected by Murrill also in OR.
Gills: "narrowly adnexed to free, when free, connected to the stem by an extremely heavy, floccose line, crowded", subgills truncate; white, (Tulloss), sinuate, crowded; white, (Murrill)
Stem: 2-11cm x 0.5-1.1cm, "tapering upward, often slightly expanded at the top", stuffed to hollow, basal bulb ovoid; white to whitish, bulb white; bald, bulb smooth to minutely floccose, (Tulloss), reaching 11cm long and about 2cm thick, with bulbous base; tapering upward; white; bald, (Murrill), VOLVA "present as a submembranous, short, thin limb around the stem base and/or as floccose material on the upper part of the bulb", (Tulloss), 3cm broad, white, "tough, regular, persistent, with entire or undulate free limb", (Murrill)
Veil: ring "relatively large, white, superior, not apical, and persistent", (Tulloss), ring "large, white, superior, persistent", (Murrill)
Microscopic spores: (8.1)8.5-11.2(12.2) x (6.0)6.3-7.7(8.5) microns, mostly elliptic (about 5% elongate and 5% broadly elliptic) and are inamyloid; basidia 4-spored, 39-47 x 4.5-11 microns, clamp connections rarely present at bases of basidia, rare in partial veil, not observed on universal veil (but rare in this locations in the synonymized A. praegemmata), (Tulloss), 9 x 5 microns, oval, smooth, colorless, (Murrill)
Spore deposit: [presumably white or whitish]
Habitat / Range
"originally found under conifers and hardwoods in wet, coastal forests", (Tulloss), type single, collected in woods near Seattle, Washington, October 20 - November 1, 1911, also collected in sandy pine barrens Newport Oregon, "Specimens at Albany sent by Copeland from California and temporarily referred by Peck to Amanitopsis adnata appear to belong here, but I have not examined them microscopically", (Murrill with Latin name italicized), fall
Similar Species
More work needs to be done on characters that separate Amanita ''pseudobreckonii'' nom. prov. - those with caps that are a brown darker than beige or tan are likely to be Amanita pantherinoides, and those with creamy yellow caps are likely to be Amanita ''pseudobreckonii'', but intermediates are hard to determine. |Amanita ameripanthera nom. prov. has spores (8.8)9.8-14.2(16.5) x (5.5)6.5-9.2(11.0) microns, lacks clamp connections on basidia, and has a volva described slightly different from Amanita pantherinoides, (Tulloss). See also SIMILAR section of Amanita ''pantherina''.
