Amanita levistriata was described
by in (1988).
I was lucky enough to be present for most of the collecting of the original material.
The cap of A. levistriata
is (22-) 31 - 37 mm wide, near ocher yellow in the center and
paler yellow to colonial buff on the margin; it is hemispheric at
first and becomes convex (sometimes depressed in the center).
The margin is only faintly striate. The volva is present in
felted patches or a fine powder that is yellowish olive against the
more intensely yellow coloring of the cap.
The gills are just free with a
decurrent line on the upper stipe, close, white to cream, and (2-) 3 -
4.5 mm broad; the short gills are truncate, white, and of diverse
The stem is 29 - 65 × (2-) 4 - 5 mm,
pale yellow below and whitish or cream above the ring; the stem
narrows upward, barely flaring at apex, has white flesh and is firmly
stuffed or solid. It bears a basal bulb (15 - 18 × 11 - 15.5
mm) that is ovoid to turnip-shaped and sometimes markedly flattened on
top. The ring is membranous, skirt-like, superior, white and
finely or faintly radially striate on the top surface, while yellow
and smooth below, it is thick-margined. On the base of
the stem or top of the bulb, the volva appears as a ring of finely
fibrillose material (lens) or very fine yellow to olive warts.
The rather small spores of Amanita levistriata measure
(6.5-) 7.5 - 9.5 (-10.0) × (5.5-) 6.5 - 8.0 (-9.8) µm and are
subglobose to broadly ellipsoid (infrequently globose or ellipsoid)
and inamyloid. Basidia lack clamps at their bases.
Spores this small are most often present in semitropical to tropical
species of section Amanita.
This species was originally described
from Mississippi, where it is known to occur in sandy soil of mixed
(deciduous/coniferous) forests. It is also known from Georgia
and Texas and probably can be found with oak or chestnut in adjoining
coastal plain regions of the southern USA. Fruiting bodies occur
singly or in small groups.
Jenkins reports that the gelatinized surface
layer of the cap's skin can be hard to find. This, in
conjunction with the powdery warts and their placement on the cap and
basal bulb suggest a volva and cap skin similar to those of such
species as A. farinosa Schwein. and the recently described
A. siamensis R. Sanmee
et al. of southeast Asia.—R. E. Tulloss
Dav. T. Jenkins. 1988. Mycotaxon 32: 415, figs. 1-2.
"Mississippi Lemon Amanita"
According to the protolog: leviter, "lightly" + striatus, "striated"; hence, "lightly striated," in reference to the pileus margin
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in herb. Dr. David T. Jenkins, Univ. of Alabama, Birmingham
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).
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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 followins is derived from the protolog (as indicated) and, otherwise, is based on original research of R. E. Tulloss.
(22-) 31 - 37 mm wide, near yellow ocher [2.5Y 6/8] on disc, paler yellow to colonial buff [5Y 8/6] on margin, shiny, hemispheric then convex or plano-depressed, at maturity having a slightly depressed center; context whitish, yellow under pileipellis; margin faintly striate, sometimes appendiculate with fine yellow bits; universal veil felted patches and warts, largest over disc or fine pulverulent powder, yellowish olive-colored, with olive tint especially noticeable against yellow of pileipellis, darkening with exposure.
just free with a decurrent line on stipe, close, white to cream, (2-) 3 - 4.5 mm broad; lamellulae truncate, of diverse lengths.
29 - 65 × (2-) 4 - 5 mm, pale yellow below, whitish or cream above annulus, narrowing upward, barely flaring at apex; bulb 15 - 18 × 11 - 15.5 mm, ovoid to napiform, sometimes subabrupt; context whitish, firmly stuffed to solid; partial veil membranous, skirt-like, superior, white and finely or faintly radially striate above, yellow and smooth below, thick-margined; universal veil as ring of finely fibrillose material (lens) or very fine olive to yellow warts at base of stipe and/or on top surface of bulb.
Odor none. Taste not recorded.
1% paracresol (test for tyrosinase) - becoming positive over a period of 8 min. in universal veil remnants, margins of lamellae, and bulb of stipe. 1% syringaldazine (test for laccase) - negative throughout the basidiome. Test voucher: Tulloss 7-17-87-C.
protolog: Mississippi: Solitary. In sandy soil of mixed coniferous-deciduous forest.
Solitary to scattered. Georgia: ??. Mississippi: ??. Texas: In Quercus alba-dominated forest.
protolog: U.S.A.: MISSISSIPPI—Harrison Co. - ca. Gulfport, Packard Pond, 15.vii.1987 Dav. T. Jenkins 2822 (paratype, in herb. Dav. T. Jenkins, Univ. Alabama, Birmingham).
Jackson Co. - Pascagoula R. Wildlife Mgmt. Area, Parker's Lk., 17.vii.1987 C. Skeffinton s.n. [Tulloss 7-17-87-H] (paratype, RET 003-8; paratype, in herb. Dav. T. Jenkins, Univ. Alabama, Birmingham), 18.vii.1987 A. G. Parks s.n. [Tulloss 7-18-87-I] (paratype, RET 005-6; paratype, in herb. Dav. T. Jenkins, Univ. Alabama, Birmingham); btwn. Wade and Vancleave, 18.vii.1987 Igor Alexander s.n. [Tulloss 7-18-87-E] (paratype, RET 003-7; paratype, in herb. Dav. T. Jenkins, Univ. Alabama, Birmingham).
Perry Co. - Black Creek Wilderness Area, 16.vii.1987 James Tinius s.n. [Jenkins 2793] (holotype, in herb. Dav. T. Jenkins, Univ. Alabama, Birmingham); Black Creek Wilderness Area, Black Creek Tr., 17.vii.1987 NAMA87 Foray participant s.n. [Tulloss 7-17-87-D] (paratype, RET 005-1; paratype, in herb. Dav. T. Jenkins, Univ. Alabama, Birmingham).
MISSISSIPPI—George Co. - N of Pascagoula River Wildlife Management Area, Davis Dead River [30°54.139‘ N/ 88°44.563’ W, 35 m elev.], 9.vii.2012 Jay Justice s.n. (RET 502-4).
Jackson Co. - Pascagoula R. Wildlife Mgmt. Area, Parkers Lk., 17.vii.1987 G. Wright s.n. [Tulloss 7-17-87-C] (RET 005-2), C. Skeffington s.n. [Tulloss 7-17-87-H] (paratype, RET 003-8; paratype, in herb. Dav. T. Jenkins, Univ. Alabama, Birmingham), 18.vii.1987 A. G. Parks s.n. [Tulloss 7-18-87-I] (paratype, RET 005-6; paratype, in herb. Dav. T. Jenkins, Univ. Alabama, Birmingham); btwn. Wade and Vancleave, 18.vii.1987 I. Alexander s.n. [Tulloss 8-17-87-E] (paratype, RET 003-7; paratype, in herb. Dav. T. Jenkins, Univ. Alabama, Birmingham).
Perry Co. - Black Creek Wilderness Area, Black Creek Tr., 17.vii.1987 NAMA87 Foray participant s.n. [Tulloss 7-17-87-D] (paratype, RET 005-1; paratype, in herb. Dav. T. Jenkins, Univ. Alabama, Birmingham).
TEXAS—Hardin Co. - Roy Larson Sandyland Sanctuary [NAMA2000 Foray 4], 10.vi.2000 E. Schutt s.n. [Tulloss 6-10-00-C] (RET 313-2). Tyler Co. - Forest Lake, 9.vi.1992 D. P. Lewis 4623 (RET 085-7),
16.vi.1992 D. P. Lewis 4689 (RET 085-8), 3.vii.1992 D. P. Lewis 4706 (RET 086-3), 1.viii.1992 D.P. Lewis 4772 (RET 085-6).
—R. E. Tulloss
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