| name | Amanita sp-AUS18 | ||||||||||||||||||||||||||||||||||||||||
| author | Tulloss & Kudzma | ||||||||||||||||||||||||||||||||||||||||
| name status | cryptonomen temporarium | ||||||||||||||||||||||||||||||||||||||||
| GenBank nos. |
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| intro |
The following text may make multiple use of each entry 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 photographs and notes of Lucy Albertella, molecular research by Dr. Linas V. Kudzma, and on other original research of R. E. Tulloss. | ||||||||||||||||||||||||||||||||||||||||
| odor/taste | Neither recorded. | ||||||||||||||||||||||||||||||||||||||||
| macrochemical tests |
None recorded. | ||||||||||||||||||||||||||||||||||||||||
| partial veil | double click in markup mode to edit. | ||||||||||||||||||||||||||||||||||||||||
| lamella edge tissue | sterile. | ||||||||||||||||||||||||||||||||||||||||
| basidiospores | [20/1/1] (9.9-) 10.2 - 12.0 (-12.5) × 7.7 - 9.8 (-10.0) μm, (L = 11.0 μm; W = 8.6 μm; Q = (1.14-) 1.15 - 1.39 (-1.43); Q = 1.28) colorless, hyaline, smooth, thin-walled, inamyloid, subglobose to (dominantly) broadly ellipsoid, uncommoly ellipsoid, somewhat flattened adaxially; apiculus sublateral, cylindric; contents granular to multiguttulate to granulate, with plentiful additional small granules in every case; color in deposit not recorded (probably white). | ||||||||||||||||||||||||||||||||||||||||
| ecology | With Eucalyptus. | ||||||||||||||||||||||||||||||||||||||||
| material examined | AUSTRALIA: NEW SOUTH WALES—City of Lithgow - Blue Mountains, Little Hartley [33.5603° S/ 150.2021° E, 820 m], 2.iv.2011 Lucy Albertella s.n. [mushroomobserver #65012] (RET 474-7, nrLSU seq'd.), 18.ii.2012 L. Albertella s.n. [mushroomobserver #87962 (RET 497-2, nrLSU & rpb2 seq'd.), . SOUTH AUSTRALIA—unkn. loc., n.d. P. S. Catcheside PSC 1813 (AD). | ||||||||||||||||||||||||||||||||||||||||
| discussion |
The spore shape range of A. sp-AUS18 is
within the range of the
spore shapes of known taxa of Amanita stirps
Umbrinella. However, the spore size range is on the small side for Australian species in the cited group. The size range is closest to that of A. murinoflammeum. However, the latter species has a rather strongly saturated red-brown cap, a grayish partial veil and a grayish lower stipe. Although the sample is limited, murinoflammeum appears to be segregated further by its nrLSU sequence. Pileus coloration and nrLSU sequence also serve to segregate the present species from Amanita albertellarum, which has been found growing at the Little Hartley site from which RET 474-7 was collected. Amanita umbrinella and A. bambra both appear to be based on mixtures of taxa. It is worth while noting the ranges of cap color, gill color, spore size, and form of the universal veil in the respective protologs. Gilbert's illustration (Gilbert 1941 Tab. 23) of A. umbrinella clearly includes a dark capped species that fits with the the fact that some collections of umbrinella were originally labeled as A. pantherina and a smaller specimen with a distinct calyptra and a robust volval sac at the base of what appears to be a totally elongating stem. It's gills are light orangish. The text mentions pinkish gills. Hence, it is plausible that the Caesareoid—A. roseolamellata or something very like it—was included in the original concept of umbrinella by the latter's authors. Since roseolamellata grows at the Little Hartley site also, it seems plausible that sp-AUS18, albertellarum, and roseolamellata could all have been collected together during a period of absence of relevant species concepts. Since none of the mentioned organisms match the very dark cap generally associated with A. umbrinella I assume that it is distinct from the species mentioned above. Once again sequencing of Wood's Amanita types seems a very important thing to do. The nrLSU derived from RET 474-7 is identical (in the ares of overlap) to a sequence reported by (Wolfe et al. 2012) as "umbrinella. It seems that the organism name associated with genes extracted from Wolfe's material from South Australia should be changed. | ||||||||||||||||||||||||||||||||||||||||
| citations | —R. E. Tulloss and L. V. Kudzma | ||||||||||||||||||||||||||||||||||||||||
| editors | RET | ||||||||||||||||||||||||||||||||||||||||
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