Summary:
Features include 1) a cap that has erect pointed fibrous reddish scales at the center, and with small vinaceous cinnamon flat scales outwards (or merely fibrillose), 2) flesh that turns slightly red when the umbo is cut, 3) free, close, broad, white to cream gills, 4) a whitish to brownish stem, at first with shaggy patches in its lower part and silky in its upper part, 5) a fibrillose, superior, and fleeting ring, 6) growth on lawns and in woods, and 7) microscopic characters including thick-walled, dextrinoid spores. Moser(1) differentiates Lepiota josserandii Bon and Boiffard, but both MycoBank and the online Species Fungorum, accessed August 25, 2018, synonymize Lepiota josserandii with L. subincarnata.

Cap:
1-3cm across, elliptic with central umbo, becoming flattened; disc with erect scales that are pointed, fibrous, and reddish or vinaceous, small flat vinaceous scales may continue out to margin; [presumably dry], margin has veil remnants at first, (Sieger), 1-3cm across, ellipsoid when young, having an obtuse umbo and flat or arched at margin when mature; 'scales on disc reddish, elsewhere "light vinaceous cinnamon", the fibrils pale vinaceous cinnamon'; covered with pointed, erect, fibrillose scales on disc and with small, appressed, spot-like scales toward margin, or merely fibrillose, margin appendiculate at first, (Smith), 1-3cm across, pink, the disc pink-brownish when old; almost tomentose, very finely punctate scaly, (Moser)

Flesh:
turning slightly red when cut, (Sieger), thin, soft; white, slightly reddish under umbo when cut, (Smith)

Gills:
free, close, broad, in 2 or 3 tiers; white, when old cream, (Sieger), approximate to stem at first, becoming remote, moderately close, broad, about 0.4cm broad, oval in outline or nearly equal, 2-3 tiers of subgills; white, becoming creamy when old, not spotted, (Smith)

Stem:
3-6cm x 0.2-0.4cm, equal, solid or stuffed; pale becoming brownish, at first with shaggy patches in lower part and silky in upper part, (Sieger), 3-6cm x 0.2-0.4cm, equal, solid or with a slender stuffed central cavity; ''whitish but slowly rufescent and finally sordid brownish over all''; ''at first covered with ragged, whitish patches of fibrils or fibrillose zones'' up to the superior, evanescent, fibrillose ring, silky and at first pruinose above the ring, (Smith), 2-6cm x 0.2-0.5cm, upper stem white, but below the indistinct ring zone, the stem colored pink, at base with scaly veil zones, (Moser)

Veil:
ring not persistent, (Sieger), superior, evanescent [fleeting], fibrillose ring, (Smith)

Odor:
slightly fragrant (Sieger, Smith), faint, boiled sweets, (Buczacki)

Taste:
taste not remarkable [but do not taste because poisonous] (Sieger), mild (Smith)

Microscopic spores:
spores 5-6 x 3 microns, elliptic, [presumably smooth], pale rusty brown [dextrinoid] in Melzer''s reagent, wall thick; pleurocystidia none, cheilocystidia 12-25 x 6-9 microns, fusoid or basidium-like; cap cuticle of very long, slender, partially appressed, brownish, thick-walled, pileocystidia up to 300 microns long and 10-12 microns wide, narrowed to flexuous [wavy] base, obtuse at apex; clamp connections present, (Smith), spores 5-6 x 3 microns, elliptic, thick-walled, germ pore absent, pale brown in Melzer''s reagent, pleurocystidia absent, cheilocystidia constricted in middle or shaped like basidia; cap cuticle partially appressed pileocystidia that are long, slender, thick-walled, brownish, (Sieger), spores 6-8 x 2-4 microns (Moser)

Spore deposit:
[presumably white or whitish]

Notes:
It has been reported for BC (Redhead(5)). There are collections from BC at the University of British Columbia. There are collections from WA at the University of Washington and Western Washington University, although it is not known whether those include the Moser concept of L. josserandii. It has been found in MI and Denmark, (Smith, H.V.(1) who says it is rare in MI and does not mention L. josserandii).

EDIBILITY

deadly due to amatoxins, has caused death in Vancouver BC, (Sieger)

Synonyms and Alternate Names:
Lepiota josserandii Bon & Boiffard