name | Amanita grallipes |
name status | nomen acceptum |
author | Bas & de Meijer |
english name | "Stilt-Legged Lepidella" |
images | |
intro | The following is derived from the original description of Amanita grallipes. |
cap | The cap of A. grallipes is 22 - 90 mm wide, from hemispherical or conico-convex to plano-convex or flat without an umbo, dry, fleshy, having an appendiculate margin when young. The cap is uniformly dark brown to somewhat paler grayish brown. The volva is present as scattered, concolorous, adnate, pyramidal warts. The flesh is white. |
gills | The gills are free, very crowded, fairly broad (up to 11 mm), at first pure white, then cream, and finally yellow to golden yellow. The short gills are attenuate. |
stem | The stem is 70 - 120 × 10 -18 mm (width measured at broadest point, just above the soil), solid, white, at first annulate, then exannulate, and dry. The stem tapers downward and is rooting. The volva comprises small, erect to appressed, pale yellowish brown, floccose scales. The annulus is rather thick, white and smooth on both surfaces, felted-membranous, and fugacious; and it bears brown warts on its margin. The flesh is white, but may bruise slightly yellow in the base of the stipe. |
odor/taste | The fruiting body lacks an odor and tastes "mild." |
spores | The spores measure 7.5 - 9.6 × 5.6 - 6.9 (-7.2) µm and are amyloid and broadly ellipsoid to ellipsoid. Clamps are distinct at bases of basidia. |
discussion |
Amanita grallipes was first described from southern Brazil and is known only from that region. This species was placed by its authors in Amanita subsect. Vittadiniae Bas and Bas' stirps Vittadinii.—R. E. Tulloss |
brief editors | RET |
name | Amanita grallipes | ||||||||||||||||||||||||
author | Bas & de Meijer. 1993. Persoonia 15: 345, figs. 1-6. | ||||||||||||||||||||||||
name status | nomen acceptum | ||||||||||||||||||||||||
english name | "Stilt-Legged Lepidella" | ||||||||||||||||||||||||
MycoBank nos. | 361022 | ||||||||||||||||||||||||
GenBank nos. |
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holotypes | L | ||||||||||||||||||||||||
intro |
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 material. 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). Paragraphs of black text will be labeled if further subdivision of 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 following material is derived from the protolog of the present species. from protolog: Basidiomes large and slender. | ||||||||||||||||||||||||
pileus | from protolog: 22 - 90 mm wide, uniformly dark brown to somewhat paler grayish brown, from hemispheric or conico-convex to plano-convex or planar without umbo; context white, unchanging, fleshy, up to 10 mm thick over stipe, up to 6 mm thick at midpoint of lamellae; margin non-striate, appendiculate when young; universal veil as scattered pyramidal warts, concolorous, adnate. | ||||||||||||||||||||||||
lamellae | from protolog: free, very crowded, at first pure white, becoming cream (4A2), finally yellow (between 3A5 and 4A5) to golden yellow (4A6), up to 11 mm broad, with concolorous even edge; lamellulae attenuate. | ||||||||||||||||||||||||
stipe | from protolog: 70 - 120 × 8 - 14.5 μm, white, dry; bulb with portion in soil 20 - 45 mm long, tapering downward[, narrowly fusiform (per figure)]; context solid, white, unchanging except for slight yellow bruising reaction in stipe base; partial veil apical, pendulous, white, rather thick, felted-membranous, rather rapidly fugacious, smooth above and below, with margin decroated with brown pyramidal warts as on pileus; universal veil as rather densely placed floccose scales, small, erect to appressed, pale yellowish brown. | ||||||||||||||||||||||||
odor/taste | from protolog: Odor lacking; taste mild. | ||||||||||||||||||||||||
macrochemical tests |
none recorded. | ||||||||||||||||||||||||
pileipellis | from protolog: rather indistinct, not gelatinizing, gradually transitioning into pileus context; filamentous hyphae 5 - 10 μm wide; clamps abundant. | ||||||||||||||||||||||||
pileus context | not described. | ||||||||||||||||||||||||
lamella trama | from protolog: bilateral, divergent; wcs = 20 - 30 μm, with central stratum comprising only filamentous hyphae (2.5 - 7 μm wide); subhymenial base 30 - 40 μm wide, comprising filamentous hyphae and inflated cells (up to 20 μm wide); clamps abundant. | ||||||||||||||||||||||||
subhymenium | from protolog: 30 - 35 μm wide; inflated cells dominating, ellipsoid to ovoid to irregularly shaped, 10 - 30 × 9.5 - 19 μm, arranged in rows perpendicular to hymenial surface; clamps abundant. | ||||||||||||||||||||||||
basidia | from protolog: 37 - 51 × 8.3 - 9.9 μm, 4-sterigmate; clamps "distinct," abundant. | ||||||||||||||||||||||||
universal veil | from protolog: On pileus: comprising elements with orientation periclinal to ascending (in basal layer interconnected to adjacent pileipellis) or anticlinal (in warts); filamentous hyphae 5 - 14 μm wide and sparsely branching in basal layer, 2 - 8 μm wide and branching and sparser in warts; inflated cells in short chains and elongate-fusiform to elongate-subclavate to subcylindric [57 - 240 × 22 - 57 μm, with brown vacuolar pigment (dissolving in NH4OH)] in basal layer, dominating and thin- to slightly thick-walled and slenderly to broadly fusiform or clavate or oblong (45 - 135 × 15 -45 μm, with intracelllar brown pigment) in lower part of wart, paler and short to almost globose (25 - 85 × 20 - 40 μm) in apex of warts; clamps abundant. As scales on stipe: inflated cells dominating, cylindric to subfusiform to oblong, almost colorless, 110 - 240 × 14 - 25 (-32) μm, in co-parallel chains; clamps abundant. | ||||||||||||||||||||||||
stipe context | from protolog: longitudinally acrophysalidic; filamentous hyphae not described; acrophysalides thin- to slightly thick-walled, "remarkably wide," 165 - 380 × 25 - 85 μm; vascular hyphae scarce; clamps abundant. | ||||||||||||||||||||||||
partial veil | not described. | ||||||||||||||||||||||||
lamella edge tissue | from protolog: only present in very early stages of expansion; filamentous hyphae 1 - 3 μm wide, approximately co-parallel, periclinal with lamella edge, rapidly disintegrating. | ||||||||||||||||||||||||
basidiospores | from protolog: [50/4/2] (7.2-) 7.5 - 9.6 × 5.6 - 6.9 (-7.5) μm, (Q = (1.15-) 1.20 - 1.50 (-1.60); Q = 1.25 - 1.40.), smooth, thin-walled, amyloid, broadly ellipsoid to ellipsoid; apiculus proportionately small, abrupt, sublateral and cylindric (per figure); contents usually granular and/or mono- or biguttulate ("oil drop" type); pure white in fresh deposit. | ||||||||||||||||||||||||
ecology | Solitary to subgregarious. Brazil: At ca. 900 m elev. In mixed ombrophilous foest with or without Araucaria angustifolia or on soil near Eucalyptus and Allophylus edulis (Sapindaceae). | ||||||||||||||||||||||||
material examined |
from protolog: BRAZIL: PARANÁ—Curitiba, "Parque Barigui" [25°25'32 S/ 49°18'39" W, ca. 928 m], 31.xii.1991 A. A. R. de Meijer 2078 (holotype, L); Curitiba, Parque Barreirinha [25°21'41" S/ 49°15'34" W, 972 m], 13 March 1992 A. A. R. de Meijer 2179 (paratype, L). RET: BRAZIL: PARANÁ—Curitiba, Reserve Biologica Cambin, | ||||||||||||||||||||||||
discussion |
from protolog: . The protolog is particularly interesting because it records what may be the least evolved form of the lamella edge tissue—very thin, rapidly disintegrating, co-parallel filamentous hyphae—with no inflated cells whatsoever. Note that this is entirely consistent with a partial veil that is smooth (nonstriate) on it upper surface. | ||||||||||||||||||||||||
citations | —R. E. Tulloss and Cristina Rodríguez Caycedo | ||||||||||||||||||||||||
editors | RET | ||||||||||||||||||||||||
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name | Amanita grallipes |
name status | nomen acceptum |
author | Bas & de Meijer |
english name | "Stilt-Legged Lepidella" |
images | |
photo | |
drawing | Dr. C. Bas (Bas and de Meijer, 1993) (reproduced by courtesy of Persoonia, Leiden, the Netherlands) |
Each spore data set is intended to comprise a set of measurements from a single specimen made by a single observer; and explanations prepared for this site talk about specimen-observer pairs associated with each data set. Combining more data into a single data set is non-optimal because it obscures observer differences (which may be valuable for instructional purposes, for example) and may obscure instances in which a single collection inadvertently contains a mixture of taxa.