name | Amanita gracilior |
name status | nomen acceptum |
author | Bas ex Bas & Honrubia |
english name | "European Slender Lepidella" |
synonyms |
≡Amanita gracilior Bas nom. prov. 1969. Persoonia 5: 436, figs. 170-172. |
images | |
cap | The cap of A. gracilior is 30 - 45 mm wide, soon plano-convex to flat, subviscid, slightly appendiculate, with a nonsulcate margin. The cap is white, tending to turn yellowish or yellowish-brownish. The cap is scattered with small, detersile, conical to subconical, white volval warts. |
gills | The gills are free to narrowly adnate, crowded, rather broad, and white to cream. The short gills are rather abundant and probably subtruncate to attenuate. |
stem | The stem is 80 - 100 × 5 -10 mm, cylindrical, and white. The stem is flocculose at the lower half and with many small, recurved, scales provoked by remnants of volva just above the rooting base. |
spores | The spores measure (9.5-) 10 - 12.5 (-13.4) × (5.4-) 5.5 - 6.3 (-7.8) µm and are amyloid and elongate. Clamps are present at bases of basidia. |
discussion |
This species was orginally described base on material from Spain and France. It has proven to be a taxon of the Mediterranean region where it occurs with oak (Quercus) and pine (Pinus) in autumn. For comparison, see Amanita miculifera Bas & Hatan. and the taxa assigned by Bas to his stirps Virgineoides (under A. virgineoides Bas). See also the discussion of A. boudieri Barla. Apparently, A. boudieri and A. gracilior are often confused in the field, a study by Neville and Poumarat (1996) reveals that A. boudieri is uncommon and occurs mostly in the first half of the year, while A. gracilior is common and occurs in the second half of the year. In my herbarium, all material of A. boudieri is from the period including March through May and all material from A. gracilior is from the months including September through November. Concerning A. gracilior var. beilleioides Neville & Poumarat, see A. boudieri var. beillei (Beauseign.) Neville & Poumarat.—R. E. Tulloss |
brief editors | RET |
name | Amanita gracilior | ||||||||||||||||||||||||||||
author | Bas ex Bas & Honrubia. 1982. Persoonia 11: 511, figs. 1-2. | ||||||||||||||||||||||||||||
name status | nomen acceptum | ||||||||||||||||||||||||||||
english name | "European Slender Lepidella" | ||||||||||||||||||||||||||||
synonyms |
=Amanita gracilior Bas. 1969. Persoonia 5: 436, figs. 170-172.
=Amanita gracilior var. belleioides Neville & Poumarat. 1996. Doc. Mycol. 26(101): 38, fig. 6. The editors of this site owe a great debt to Dr. Cornelis Bas whose famous cigar box files of Amanita nomenclatural information gathered over three or more decades were made available to RET for computerization and make up the lion's share of the nomenclatural information presented on this site. | ||||||||||||||||||||||||||||
etymology | gracilior "slenderer" | ||||||||||||||||||||||||||||
MycoBank nos. | 110467 | ||||||||||||||||||||||||||||
GenBank nos. |
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holotypes |
Amanita gracilior—L Amanita gracilior var. belleioides—in herb. S. Poumarat | ||||||||||||||||||||||||||||
revisions | Neville & Poumarat. 1996. Doc. Mycol. 26(101): 32, fig. 5(A-F). | ||||||||||||||||||||||||||||
selected illustrations | Neville and Poumarat. 1995. Bull. Semestriel Féd. Assoc. Mycol. Medit., Nouv. Sér. 7-8: pl. 10-12. | ||||||||||||||||||||||||||||
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 not directly from the protolog of the present taxon and not cited as the work of another researcher is based on original research of R. E. Tulloss. From protolog of A. gracilior: Basidiomes small to medium-sized, rather thickset to very slender. | ||||||||||||||||||||||||||||
pileus | from protolog: 30 - 45 mm wide, white or sordid white or "buff tinged with cream," "from convex with somewhat flattened center to plano-convex or flat," with exposed pileipellis viscid when moist; context white to pale buff; margin not or only slightly sulcate, slightly appendiculate, somewhat inflexed at first, later straight; universal veil as small warts, adnate, conical to pustule-like, up to 2.5 mm wide and 1.5 mm high, often with radially fibrillose flat base, scattered away from disc, densest over disc and there often remaining connected and forming felted-fibrillose and somewhat areolate patch "carrying" small adnate conical warts, sometimes detersile with age. | ||||||||||||||||||||||||||||
peridium | double click in markup mode to edit. | ||||||||||||||||||||||||||||
lamellae | from protolog: free to narrowly adnate, crowded, white to pale buffy cream (paler than 10YR8/3), up to 6.5 mm broad, thin, straight-edged or ventricose, with concolorous subflocculose, thin edge; lamellulae irregularly truncate to subtruncate to attenuate, rather abundant to scarce. | ||||||||||||||||||||||||||||
stipe | from protolog: 70 - 80 × 5 - 17 mm (length includes radicating bulb), white to sordid white or with pale buff tinge, subfelted-subfibrillose, below flocculose to squamulose; bulb subcylindric to fusiform to napiform, up to 45 × 28 mm, papering into "long rooting point"; context solid, white to pale buff; partial veil (sub)apical, pendent, fragile, membranous, concolorous, rather narrow, (sub)striate; universal veil inducing many rows of minute recurved scales on lower stipe and as much as upper half of bulb. | ||||||||||||||||||||||||||||
odor/taste | from protolog: Odor and taste indistinct to somewhat unpleasant. | ||||||||||||||||||||||||||||
macrochemical tests |
none reported. | ||||||||||||||||||||||||||||
pileipellis | from protolog of A. gracilior: as cutis; filamentous hyphae (1.5 - 5.0 μm wide), interwoven, colorless, "at first gelatinizing at surface only where exposed, later also under volval remnants." | ||||||||||||||||||||||||||||
pileus context | not described in protolog of A. gracilior | ||||||||||||||||||||||||||||
lamella trama | from protolog of A. gracilior: bilateral. | ||||||||||||||||||||||||||||
subhymenium | from protolog of A. gracilior: irregularly ramose to coralloid; clamps present. | ||||||||||||||||||||||||||||
basidia | from protolog of A. gracilior: 35 - 60 × 11.0 - 14.0 μm, mainly 4- also 2- and 3-sterigmate; clamps present. | ||||||||||||||||||||||||||||
universal veil | from protolog of A. gracilior: On pileus: elements colorless to pale yellowish for most part, sometimes with golden yellow content in wart apex, irregularly disposed in wart apex, more often in parallel-erect position toward wart base; filamentous hyphae 3.0 - 11.0 μm wide, branching, rather abundant; inflated cells abundant, 20 - 90 × 15.0 - 45 μm, in short to rather long terminal rows, more rarely terminal singly; vascular hyphae scarce; clamps rather frequent. | ||||||||||||||||||||||||||||
stipe context | from protolog of A. gracilior: [longitudinally acrophysalidic; ]filamentous hyphae 2.0 - 12.0 μm wide, branching; acrophysalides abundant, up to 350 × 35 μm. | ||||||||||||||||||||||||||||
partial veil | not described in protolog of A. gracilior | ||||||||||||||||||||||||||||
lamella edge tissue | from protolog of A. gracilior: as strip of somewhat irregularly disposed ellipsoid, clavate, piriform, and subcylindric cells [(8.0-) 20 - 55 × (7.0-) 10.0 - 20 μm)], with smaller cells catenulate. | ||||||||||||||||||||||||||||
anatomical figures | |||||||||||||||||||||||||||||
basidiospores |
Bas (1969): [20/1/1] (9.5-) 10.0 - 11.5 (-12.0) × 5.5 - 6.5 (-8.0) μm, (Q = 1.50 - 2.0; Q = 1.80), colorless, hyaline, thin-walled, amyloid, elongate, rarely subcylindric; apiculus not described; contents subgranular or as a few large guttae; color in deposit not recorded. from protolog of A. gracilior: [50/3/3] (9.0-) 10.0 - 12.0 (-14.0) × (5.0-) 5.5 - 6.5 (-8.0) μm, (Q = (1.40-) 1.70 - 2.0; Q = 1.70 - 1.85), colorless to very slightly yellowish in NH4OH, hyaline, smooth, rather thin-walled, strongly amyloid, elongate, rarely ellipsoid, rarely cylindric, sometimes broadening toward apex; apiculus small, abrupt, sublateral [per illustrations] contents subgranular to granular; white in deposit. composite of data from all material revised by RET: [33/2/2] 9.0 - 12.5 (-13.4) × (4.5-) 5.0 - 6.2 (-7.8) μm, (L = 9.9 - 11.4 μm; L' = 10.5 μm; W = 5.5 - 5.9 μm; W' = 5.7 μm; Q = (1.54-) 1.67 - 2.08 (-2.44); Q = 1.82 - 1.91; Q' = 1.85), hyaline, colorless, smooth, thin-walled, amyloid, elongate to cylindric, sometimes expanded toward one end, adaxially flattened; apiculus sublateral, cylindric; contents granular to multiguttulate; color in deposit not recorded. | ||||||||||||||||||||||||||||
ecology |
Bas (1969): Spain: Terrestrial. from protolog of A. gracilior: Solitary to subgregarious. Spain: In forest of Quercus rotundifolia, Q. coccifera, and Pinus halepensis. from protolog of A. gracilior var. belleioides: France: In calcareous and dolomitic sandy soil under P. halepensis and Q. ilex. RET: Solitary to gregarious. Italy: With P. pinea L. and P. pinaster L. | ||||||||||||||||||||||||||||
material examined |
Bas (1969): SPAIN: CATALONIA—Prov. Gerona - Gerona, Ampurdán, 20.x.1966 A. Marchand s.n. (L comprising dried specimen and excellent color slide). from protolog of A. gracilior: FRANCE: VAUCLUSE—ca. Avignon, 24.x.1974 C. Bas 6462 (holotype, L). SPAIN: CATALONIA—Prov. Gerona - Gerona from protolog of A. gracilior var. belleioides: FRANCE: BOUCHES-DU-RHÔNE—Marseille, unkn. loc., s.d. Villeneuve s.n. (paratype, in herb. S. Poumarat 94.10.232); Marseille, Parc Pastré, 4.viii.1990 Villeneuve s.n. (holotype of A. gracilior var. belleioides, in herb. S. Poumarat 90.0804.201). HÉRAULT—Bédarieux, 25.x.1995 unkn. coll. s.n. (paratype, in herb. P. Neville 95.10.25.11 => in herb. S. Poumarat); ca. Montpellier, s.d. Bertea s.n. (paratype, in herb. P. Neville 94.10.03.01 => in herb. S. Poumarat). . RET: FRANCE: CHARENTE-MARITIME—Isl. Oléron, St.-Pierre-d’Oléron, 23.x.2000 P. Bobinet s.n. [Massart 20008] (in herb. F. Massart; RET 342-2). ITALY: LIVORNO—ca. Donoratico, | ||||||||||||||||||||||||||||
citations | —R. E. Tulloss | ||||||||||||||||||||||||||||
editors | RET | ||||||||||||||||||||||||||||
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name | Amanita gracilior |
name status | nomen acceptum |
author | Bas ex Bas & Honrubia |
english name | "European Slender Lepidella" |
images | |
anatomical figures | |
photo |
Dr. Vicenzo Migliozzi - (2-3) Italy. |
drawing |
Dr. C. Bas - (1) Spain. (1969) (reproduced by courtesy of Persoonia, Leiden, the Netherlands) |
name | Amanita gracilior |
bottom links |
[ Section Lepidella page. ] [ Amanita Studies home. ] [ Keys & Checklists ] |
name | Amanita gracilior |
bottom links |
[ Section Lepidella page. ] [ Amanita Studies home. ] [ Keys & Checklists ] |
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.