The following description is based on the original description by Contu (1998).
The cap of A. ochraceopallida is 20 - 100 mm wide, uniformly very pallid with ochraceous brown tint, campanulate-convex, eventually broadly convex, with or without an obtuse umbo, slightly viscid when moist, with a striate margin. The volva is present as white, unchanging warts of varying small sizes.
The gills are free, moderately crowded, ventricose, white, with a flesh pink or pale cream tint, with an uneven, slightly flocculose and concolorous edge.
The stem is 70 - 130 × 8 - 15 mm, cylindric, narrowing upward, white, with a frost-like concolorous covering which is rarely broken up into whitish concentric bands. No ring is present. The volva is membranous, saccate, persistent, white on the outside, tending to be grayish with yellow-orange spotting. The flesh is white and unchanging.
The odor and taste are weak.
Spores measured by RET are (9.0-) 9.1 - 12.8 (-16.5) × (8.0-) 8.3 - 11.4 (-13.5) µm and are subglobose to broadly ellipsoid and inamyloid. Clamps are absent at bases of basidia.
This species was originally described from Sardinia (Italy) in a mountain habitat under plantations of fir (Abies cephalonica). This species is rare and localized on Sardinia. In the notes on two of the paratypes, Dr. Contu states that "this is the sole Amanita species occurring in Abies plantations in Sardinia."
Dr. Contu was kind enough to send RET portions of two of the paratypes of this species from which the spore measurements above were taken. Since the spore measurements provided in the original description are exactly the same as those provided here with the extremes of length and width eliminated, it may be that the type materials' spores were not measured. Revision of the type would be useful.
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The following material is derived from the protolog of the present species and from original research of R. E. Tulloss.
from protolog: .
from protolog: .
from protolog: .
from protolog: .
from RET study of paratypes: 105 - 135 μm thick; suprapellis (15-) 30 - 40 μm thick, colorless, gelatinized to partially gelatinized; subpellis 75 - 85 (-120) μm thick, yellow-orange in exsiccata, largely ungelatinized; filamentous undifferentiated 1.7 - 6.0 μm wide, branching, except over disc hyphae predominantly subradially oriented but with some criss-crossing, over disc as rather open lattice, densely packed vertically in both supra- and subpellis; vascular hyphae 3.8 - 11.5 μm wide, plentiful, branching.
from RET study of paratypes: filamentous undifferentiated hyphae ??
; acrophysalides ??
; vascular hyphae 2.5 - 7.2 (-12.1) μm wide, rather (unusually) common especially near pileipellis, rather frequently branching, strongly sinuous.
from RET study of paratypes: bilateral, divergent; wcs = 75± μm wide (rehydration good to excellent); with central stratum comprising interwoven filamentous undifferentiated hyphae with some intercalary inflated segments; with subhymenial base exhibiting moderate to poor rehydration, comprising plentiful fusiform to clavate cells (e.g., 62 - 69 × 17.1 - 19.0 μm), very common filamentous undifferentiated hyphae (5.0 - 6.6 μm wide, frequently branching, often constricted at septa), very common vascular hyphae in tangles (3.7 - 8.4 μm wide, with diameter inconstant). [Note: Whether the inflated cells of the subhymenial base are terminal or intercalary was not recorded in RET's notes.—ed.]
from RET study of paratypes: for the most part pseudoparenchymatous (cellular), with 1 - 2 (-3) cell layers observed below longest basidia, but with some uninflated hyphal segments (some branching) found in other regions; inflated cells mostly subglobose, with basidia arising from all cells forms, with underlying part of subhymenial tree comprising short hyphal segements perpendicular to hymenial surface.
from RET study of paratypes: ca. 74 × 15.0 μm.
from RET study of paratypes: On pileus surface: ??. On stipe base, exterior surface: ??. On stipe base, interior: filamentous undifferentiated hyphae 1.9 - 9.7 μm wide (commonly exceeding 9.0 μm wide), most plentiful near surfaces, branching, singly or in fascicles, interwove in open lattice, sometimes with yellow subrefractive walls, dominating except in clusters of inflated cells, occasionally constricted at septa, rather often with tip cells slightly inflated; inflated cells moderately common, clustered locally, terminal singly, broadly clavate to ellipsoid (e.g. 62 × 34 μm) or clavate (e.g., 41 - 55 × 17 - 20 μm, sometimes with walls up to 0.5 μm thick) or narrowly ellipsoid (e.g. 23 - 40 × 18.5 - 25, sometimes with walls slightly thickened), or ellipsoid (sometimes with walls up to 0.7 μm thick) or broadly fusiform or subpyriform (e.g., 21 × 15 μm, with thin walls); vascular hyphae not observed except adjacent to inner surface layer; clamps not observed. On stipe base, inner surface: only with scattered remains here and there, very thin; filamentous undifferentiated hyphae, partially gelatinized to gelatinized, predominantly sublongitudinally arranged; vascular hyphae 2.6 - 6.3 μm wide, common, coiling, sinuous, twisting, branching.
from RET study of paratypes: longitudinally acrophysalidic: filamentous undifferentiated hyphae ??; acrophysalides 137 - 320 × 25 - 39 μm; vascular hyphae ??.
lamella edge tissue
from RET study of paratypes: sterile; largely collapsed and gelatinizing, in one specimen as five or more layers of inflated cells in some areas; inflated cells up to 47 × 38 μm.
from RET study of paratypes: [73/3/2] (9.0-) 9.1 - 12.8 (-16.5) × (8.0-) 8.3 - 11.4 (-13.5) μm, (L = 10.5 - 12.0; L' = 11.3 μm; W = 9.1 - 10.9 μm; W' = 10.1 μm; Q = (1.05-) 1.07 - 1.20 (-1.41); Q = 1.10 - 1.15; Q' = 1.12), hyaline, colorless, smooth, thin-walled, subglobose to broadly ellipsoid, rarely ellipsoid, adaxially flattened, uncommonly with "giant" spores; apiculus sublateral, cylindric; contents mono- to multiguttulate; white in deposit.
from protolog: Gregarious. From above 1000 m elev. In montane plantation of Abies cephalonica L. Rare, localized, known only from Sardinia.
RET: At 1300 m elev. Associated with pure plantation of Abies cephalonica. Contu's notes on the 16-21.vii.1996 collection state, "The sole Amanita species occurring in Abies plantations in Sardinia; typically it grows only during summer together with Laccaria impolita and some Russula species."
from protolog: ITALY: SARDINIA—Prov. Sassari - Tempio Pausania, Massicio del Limbara, Punta Balistreri [1000+ m], 21.v.1994 M. Consut s.n. (paratype, CAG), 14.vi.1994 M. Contu s.n. (paratype, CAG), 23.vi.1994 M. Contu s.n. (paratype, CAG), 21.vi.1996 M. Contu s.n. (holotype, CAG), 30.vi.1996 M. Contu s.n. (paratype, CAG), ?6.vii.1996 M. Contu s.n. (paratype, CAG), 21.vii.1996 M. Contu s.n. (paratype, CAG; paratype, RET 260-4), 21.vi.1997 M. Contus s.n. (paratype, CAG), 9.vii.1997 (paratype, CAG, labeled as "holotype" in typographical error). [Note: The paratype dated "6.vii.1996" may represent the same collection from which duplicat material marked "16.vii.1996" was sent to RET for review prior to publication of the species.
RET from study of paratypes: ITALY: SARDINIA—Prov. Sassari - Tempio Pausania, Massicio del Limbara, Punta Balistreri [1300 m], 16.vii.1996 M. Contu s.n. (paratype, CAG, n.v.; paratype, RET 260-3), 21.vii.1996 M. Contu s.n. (paratype, CAG, n.v.; paratype, RET 260-4). [Note: With regard to the collection dated "16.vii.1996" see note on the material examined as listed in the protolog.—ed.]
In the protolog of this species, two different collections are listed as the type. The collection specified as the type in the Latin diagnosis is taken to be the intended holotype. This collection is listed immediately preceding the collection apparently mis-labeled as "typus" in the list of materials examined. We believe it is reasonable to consider the latter reference to the "typus" as a typographical error.
In RET's provisional systematics of sect. Vaginatae, the present species falls within the limits of the provisional stirps Crocea. A sporograph comparison of the taxa assigned to that stirps follows:
—R. E. Tulloss
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