Protologue of Cortinarius birkebakii Ammirati, Niskanen & Liimat.
Cortinarius birkebakii Ammirati, Niskanen & Liimat., sp.nov.
Type: U.S.A., Washington, Mason County, Twanoh State Park, mixed Douglas fir-Hemlock, conifer forest (Tsuga heterophylla, Pseudotsuga menziesii), 20 Oct 2007, J. M. Birkebak 10-20-2007-18 (WTU, holotype; NY, isotype). GenBank no. KP087973.
Diagnosis: Pileus 10-30 mm, hemispherical to obtusely umbonate, then almost plane with down curved margin, really faintly tomentose-fibrillose, blackish red at centre, in other parts brownish red, often watery streaked and zoned but not truly hygrophanous. Lamellae close to medium spaced, deep red to very dark red. Stipe 25-55 mm long, 3-5 mm thick at apex, 4-7 mm thick at base, cylindrical to narrowly clavate, at first buff pink with some reddish (light to pale pinkish vinaceous) fibrils, soon (or sometimes from beginning) with dark red colors, especially on base, but base proper with pale ochraceous to buff tones, sometimes colors more ferruginous red, sometimes apex orange fibrillose. Universal veil mostly evanescent, red. Basal mycelium presumably orange. Context watery and concolor in pileus, where faded lighter red, in stipe apex pale reddish or pinkish white, otherwise light red but darker, watery red below, rich dark red to blackish red along cortex in base, stuffed to hollow, pith pale reddish white. Odor of lamellae raphanoid. Taste of pileus flesh raphanoid. Basidiospores 7-8.4 (9) x 4.1-5 um, ellipsoid, distinctly verrucose. Lamellar trama regular, parallel interwoven hyphae, in KOH pale pinkish to colorless, some slightly encrusted, wall refractive, cylindrical to inflated, 5-26 um wide, clamps present. Basidia 4-spored, pinkish in KOH. Pileipellis surface hyphae
4.5-11.1 (15-18.5) um wide, cylindrical to broadly cylindrical, pinkish to purplish or slightly brownish, some containing red pigment, some slightly encrusted, no well differentiated subcutis. ITS sequence (GenBank KP087973, holotype) distinct from other members of Cortinarius subgenus Dermocybe. With a sister group relationship to C. idahoensis (GenBank JX045669, holotype) and deviating from it in the ITS region by six substitutions and indel positions. Ecology and distribution: In mixed and coniferous forests. Producing basidiomata in autumn. Known from Western North America, from Oregon to British Columbia. Additional specimens: Canada, British Columbia, OC16 (UBC), GenBank no. FJ039591 (as C. phoeniceus var. occidentalis) OC33 (UBC) [THIS OBSERVATION!], GenBank no. FJ039592 (as C. phoeniceus var. occidentalis). U.S.A. Oregon, Douglas-fir, OSC 1064012, GenBank no. EU525946 (as D. sanguinea). U.S.A., Washington, Lake Wenatchee, Chelan County, mixed conifers (Abies, Pinus, Picea, Pseudotsuga, Tsuga, etc.) in soil and litter, 15 Oct 1984, collected by A. Methven, (JFA9055) (WTU). U.S.A., Washington, Olympic Peninsula, the beginning of the Boulder Creek Trail, Pseudotsuga and Tsuga, 26 Oct 2009, J.F. Ammirati, K. Liimatainen, T. Niskanen 09-142 (H).
Etymology: Named for Joshua M. Birkebak.
Holotype J. M. Birkebak 10-20-2007-18 (WTU).
Index Fungorum no. 196 [Effectively published 06/11/2014 (ISSN 2049-2375)]
|User’s votes are weighted by their contribution to the site (log10 contribution). In addition, the user who created the observation gets an extra vote.|
|I’d Call It That||3.0||0.00||0|
|Not Likely||-2.0||9.19||2||(Christian Schwarz)|
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|I’d Call It That||3.0||6.32||1|
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I don’t know this fungus as it does not occur in the southern hemisphere but I’d like to point out that cap shape in Cortinarius doesn’t really provide a reliable taxonomic characteristic because the variation can be so great.
We have 3 collections labelled as Cortinarius phoeniceus var. occidentalis from the same day. You sequenced two of those collections. Our Cortinarius collections are now with Prof. J. Ammirati and we are not able to match the photos with the specimens. Never mind, we will keep your comment in mind. Adolf
The new name for C. phoeniceus var. occidentalis is C. smithii. However, the shape of the cap looks wrong and the stipe doesn’t look yellow enough for me to call it that.
Oluna has three collections of Cortinarius phoeniceus var. occidentalis from Dec. 20, 2007, all deposited in the UBC herbarium (UBC F16370, F16372, F16557). The first two of them were sequenced (GenBank FJ039591 & FJ039593). The photo is obviously one of the third collection (UBC F16557) that was not sequenced. It fits the habitat description on the herbariusm label. It might have been too old, hence it drew Christian’s and Drew’s comments.
Besides these three collections of Cortinaceus phoeniceus var. occidentalis, Oluna collected one specimen of “Cortinarius idahoensis” (UBC F16375 – GenBankFJ039596) whose DNA matched Cortinarius humboldtensis.
I assume that my photo is one of the group of Cortinarius phoeniceus var. occidentslis that passed its prime. – Adolf
It doesn’t look much like phoeniceus, however the red channel in the image is quite heavy which may be confusing the matter.
Created: 2011-07-29 02:28:09 EDT (-0400)
Last modified: 2014-11-07 15:34:05 EST (-0500)
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