| name | Amanita fibrillopes |
| name status | nomen acceptum |
| author | O. K. Mill. |
| english name | "Bush Elf Amanita" |
| images |
  1. Amanita fibrillopes, Western Australia, Australia.  2. Amanita fibrillopes, Western Australia, Australia.  3. Amanita fibrillopes, Western Australia, Australia.  4. Amanita fibrillopes, Western Australia, Australia. |
| intro |
The following is based on Miller (1992). |
| cap |
The cap of Amanita fibrillopes is 32 - 34 mm wide, buff, darkening to light brown in age, convex, dry, with a nonstriate margin. The cap is densely covered with light brown, often pointed warts. In the type, the cuticle broke up into an areolate surface with a wart in the center of each areola. The warts are said to be composed of a pointed, darker upper portion that sits on a pale fibrillose base. Further, the upper part of the wart is described as having a "cuticle." |
| gills |
Gills are adnate, close, thick, white, becoming light brownish with age. The margin of the gills is densely coated at first with orange floccules, possibly representing an incoherent ring. [Note: Miller's illustration shows that in some fruiting bodies the partially opened caps do have an incoherent ring that is breaking up into a form rather like the spokes of a wheel. It is not possible from the original description to tell if this ring-like tissue is distinct from the universal veil material on the stem or part of it.] The short gills are infrequent or absent. |
| stem |
Its stem is 22 - 32 × 5 - 10 mm, dry, with rows of tufted, grayish brown fibrils, densely formed over the entire surface. The basal bulb is marginate to nonmarginate, upper surface with orange-pink tint in some young material. [Ed. note: Probably the original color of the volva before exposure.] [Note: Miller's photographs show several bulbs with what appear to be distinctly limbate volval remnants.] |
| spores |
The spores measure 9 - 12 (-13) × 6 - 7 (-8.4) µm and are ellipsoid to elongate, infrequently cylindric and inamyloid. Clamps are absent at bases of basidia. The contents of spores appear yellow in Melzer's solution. |
| discussion |
Originally described from the state of Western Australian growing in the sandy soil of a forest road. Known only from the type locality. No associated plants are recorded. Miller emphasizes that the basidiospores are short and compact. This may have something to do with their growing in a roadway. Photographs of the original material suggest it is all rather young; and connection of gills to stem may not be adnate in more mature material. It would be interesting to know the colors of the limbus internus of the volva that can be observed if a "button" of this species is sectioned. Given the color of the gill edges and the color reported on the young bulb, one might guess that the limbus internus, at least, if not the entire volva, is originally orange or orangish but quickly darkens on exposure. If this guess were confirmed the species might be related to the bright colored taxa with powdery or absent rings and which lack clamps. On the other hand, the reference to a cuticle on the cap's volval warts and the apparent presence of a limbate volva at the base of the stem suggests a relationship with the odd species of section Amanita that can be found in Australia, Chile, and Andean Argentina which sometimes are found with coherent volva limbs suggesting a species of section Vaginatae.—R. E. Tulloss |
| brief editors | RET |
| name | Amanita fibrillopes | ||||||||
| author | O. K. Mill. 1992a ["1991"]. Canad. J. Bot. 69: 2700, figs. 37-40, 51. | ||||||||
| name status | nomen acceptum | ||||||||
| english name | "Bush Elf Amanita" | ||||||||
| MycoBank nos. | 358174 | ||||||||
| GenBank nos. |
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| holotypes | VPI | ||||||||
| 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 drawn from the protolog of the present species. from protolog: Basidiome small, with broad stature. [Note: The reader should be aware that the photograph of this species published in the protolog suggests that the following description is based on a deformed and depauperate specimen. Hence, many characters recorded in the protolog may not describe a well-developed, healthy specimen.—ed.] | ||||||||
| pileus | from protolog: 32 - 34 mm wide, buff, darkening in age to light brown, convex, dry, areolate; context not described; margin nonstriate; universal veil as densely placed warts, light brown or gray-brown or broan, "nearly" or "often" pointed, with each wart centered in areola. | ||||||||
| lamellae | from protolog: adnate, close, white, becoming light brownish with age, "thick"; lamellulae infrequent or absent. | ||||||||
| stipe | from protolog: 22 - 32 mm × 5 - 10 mm, with upper surface in young specimens tinted orange-pink (6A2), dry, with rows of tufted, grayish-brown fibrils densely formed over the entire surface; bulb marginate to non-marginate; context not described; partial veil adhering to edges of lamellae, falling away at maturity leaving many orange (5A2) pieces clinging to edges of lamellae but forming neither [a membranous, skirt-like "annulus"] nor [leaving appendiculate remains on pileus margin]; universal veil on "upper bulb surface of two specimens." [Note: In the description of the partial veil, the editor has changed the word "surface" with relation to lamellae to "edge." The photograph in the protolog was used to interpret other parts of the description of the partial veil.—ed.] | ||||||||
| odor/taste | not recorded. | ||||||||
| macrochemical tests |
none recorded. | ||||||||
| pileipellis | from protolog: as mixocutis, up to 240 - 350 µm thick, not gelatinized, yellowish in KOH to light reddish-brown in Melzer’s Reagent; filamentous hyphae 3 - 9 µm wide, often branched, thin-walled. | ||||||||
| pileus context | from protolog: hyaline in KOH and light yellowish orange in Melzer’s Reagent; filamentous hyphae 4 - 11 (-20) µm wide, interwoven, thin-walled; acrophysalides up to 20 µm wide. | ||||||||
| lamella trama | from protolog: [bilateral, ]divergent, yellowish in KOH, light ochraceous in Melzer’s Reagent; filamentous hyphae 3 - 13 µm wide, with scattered inflated cells up to 36 µm wide, thin-walled. | ||||||||
| subhymenium | from protolog: irregular, often angular, thin-walled, hyaline cells, 6 - 20 × 5 - 12 µm. | ||||||||
| basidia | from protolog: 38 - 56 × 9 - 12 µm, 4-spored; clamps absent. | ||||||||
| universal veil | from protolog: On pileus: filamentous hyphae 3 - 12 µm wide, abundant, interwoven, hyaline in KOH and Melzer’s Reagent; inflated cells "ovoid to vesiculose," (15-) 30 - 55 × (18-) 22 - 35 µm, intercalary or terminal (singly or sometimes in chains). On stipe not described. | ||||||||
| stipe context | not described. | ||||||||
| partial veil | not described. | ||||||||
| lamella edge tissue | from protolog: inflated cells pyriform to subglobose to globose, 12 - 25 × 10 - 20 µm, thin-walled, hyaline, terminal singly or (often) in chains, "voluminous." | ||||||||
| basidiospores | from protolog: [-/-/-] 9.0 - 12.0 (-13.0) × 6.0 - 7.0 (-8.4) μm, (Q = 1.38 - 2.0; Q' = 1.70), thin-walled, inamyloid, ellipsoid to elongate; apiculus "prominent"; contents yellowish in Melzer's reagent; color in deposit not recorded. | ||||||||
| ecology | from protolog: In clusters. In sandy soil of forest road under Eucalyptus jacksonii and Agonis juniperina. | ||||||||
| material examined |
from protolog: AUSTRALIA: WESTERN AUSTRALIA—Walpole - Town of Walpole-Nornalup Nat. For., Gully Rd., | ||||||||
| discussion | The original description labors somewhat to describe the possibly abnormal basidiomes of the type collection. Revision based on additional collections of this species is necessary. | ||||||||
| citations |
The editors express their thanks to Dr. Elaine Davison for her assistance with Western Australia geographical and other data relating to Miller's original materials of this taxon. —R. E. Tulloss | ||||||||
| editors | RET | ||||||||
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Spore data sets and their composite
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