| name | Amanita tlaxcalipanthera | ||||||||||||||||||||||||||||
| author | Tulloss, Haelew., Geml, S. D. Russell and A. Kong | ||||||||||||||||||||||||||||
| name status | nomen provisorum | ||||||||||||||||||||||||||||
| english name | "Tlaxcalan Panther" | ||||||||||||||||||||||||||||
| etymology | Tlaxcalae, name of state in Latin genitive + panthera, panther, because of similarity to A. pantherina and A. ameripanthera. | ||||||||||||||||||||||||||||
| 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 based on collectors' notes and photographs and their contribution of exsiccata; on the molecular research of D. Haelewaters, S. D. Russell and J. Geml; and on other original research of RET. | ||||||||||||||||||||||||||||
| pileus | up to 80 mm wide, pale grayish brown (6D5) at first and fading to brassier than 6C4, parabolic to convex, glabrous, even: context white, unchanging when cut or bruised; margin shallowly sulcate; universal veil as flattened, off-white, felty warts. | ||||||||||||||||||||||||||||
| lamellae | free, crowded, white, with fimbriate margins; lamellulae truncate. | ||||||||||||||||||||||||||||
| stipe | 80-90 × 10-15 mm (width measured at apex), white, silky-fibrillos, bulb distinct at first, less so in age; annulus white, skirt-like, collapsing on stipe; universal veil as "rolled sock" around top of bulb or as short free limb at top of bulb. | ||||||||||||||||||||||||||||
| odor/taste | neither recorded. | ||||||||||||||||||||||||||||
| macrochemical tests |
none recorded. | ||||||||||||||||||||||||||||
| pileipellis | 308–350 µm thick in young specimen; upper layer extensively gelatinized, 100–175 µm thick; lower layer ungelatinized, 175–200 µm thick, with strongest pigmentation (yellow-orange) in 65 µm thick zone immediately below gelatinized layer; filamentous, undifferentiated hyphae 2.0–7.0 µm wide, branching, densely interwoven, dominantly subradially arranged; vascular hyphae 3.0–5.4 µm wide, with knobby outline, infrequent; clamps not observed. | ||||||||||||||||||||||||||||
| pileus context | filamentous, undifferentiated hyphae 2.0–13.5 µm wide, branching, dominating, interwoven, often in fascicles, occasionally with narrowly fusiform to narrowly clavate to cylindric slightly inflated intercalary cells (up to 21 µm wide), with walls up to 0.5 µm thick, sometimes with yellowish walls; acrophysalides terminal, singly or (occasionally) in short chains, ellipsoid to ovoid to broadly clavate to clavate to narrowly clavate to narrowly fusiform, up to 123 × 34 µm, with walls up to 0.8 µm thick; vascular hyphae not observed; clamps not observed. | ||||||||||||||||||||||||||||
| lamella trama | bilateral divergent; with subhymenial base composed largely of curving slightly inflated elongate to allantoid to clavate to subglobose cells (up to 112 × 20 µm) and branching, filamentous, undifferentiated hyphae, with angle of divergence shallow (not exceeding 30°); wcs = 30–50 µm; filamentous, undifferentiated hyphae 1.2–5.5 µm wide, branching, with ventricose intercalary elements up to 18.0 µm wide within central stratum and in subhymenial base; terminal, inflated cells apparently absent; vascular hyphae not observed. | ||||||||||||||||||||||||||||
| subhymenium | wst-near = (10–) 20–45 µm and wst-far = 30–70 µm (moderately inflated) to wst-near = 50–70 µm and wst-far = 70–100 µm (well inflated); with plentiful inflated elements, but also with uninflated hyphal segments, with basidia arising from small inflated cells and from short chains of short uninflated hyphal segments or (infrequently) from allantoid cell originating near edge of central stratum. | ||||||||||||||||||||||||||||
| basidia | 32–62 × 9.5–12.8 µm, dominantly 4- and occasionally 2-sterigmate, with sterigmata up to 8.0 × 1.8 µm; clamps not observed. | ||||||||||||||||||||||||||||
| universal veil | On pileus: gelatinizing at upper surface and there all elements collapsed, with uncollapsed portions pale brown in mass; filamentous, undifferentiated hyphae 3.5–6.5 µm wide, branching, sometimes in fascicles, common; inflated cells dominating, hyaline at first, becoming pale gray by time of pileus separation from partial veil, pale gray to pale brown by onset of sporulation, tending toward periclinal orientation, often smaller near pileipellis, terminal, singly or in chains of 2 or 3, with some such chains having anticlinal orientation, cylindric to fusiform to narrowly fusiform to narrowly clavate (up to 108 × 36 µm), globose to subglobose to broadly ellipsoid to ellipsoid (up to 80 × 53 µm), with walls thin or (more frequently) up to 1.0 µm thick; vascular hyphae 2.4–8.0 µm wide, knobby, branching, locally in complex tangles, plentiful to locally infrequent (absent from all sections in one basidiocarp of Tulloss 3-2-89-E). On stipe base: similar to that on pileus, but with larger and more plentiful fascicles of filamentous, undifferentiated hyphae, with hyphae and inflated cells in approximately equal quantities, with chains of inflated cells often aligned with fascicles of hyphae (sublongitudinally?), with inflated cells somewhat more brown than on pileus; vascular hyphae 3.5–5.6 µm wide, scarce; clamps not observed. | ||||||||||||||||||||||||||||
| stipe context | longitudinally acrophysalidic; filamentous, undifferentiated hyphae 2.0–10.5 µm wide, branching, plentiful, with walls from slightly thickened up to 0.7 µm thick; acrophysalides plentiful to dominating away from surface, often rounded at septum, sometimes nearly cylindric, up to 280 × 42 µm, with walls up to 1.0 µm thick; vascular hyphae 5.6–11.9 µm wide, uncommon; clamps not observed. | ||||||||||||||||||||||||||||
| partial veil | filamentous, undifferentiated hyphae 2.1–9.8 µm wide, frequently branching, dominating, often in fascicles, dominantly subradially arranged, with walls thin to slightly thickened and occasionally yellowish; inflated cells narrowly clavate, plentiful, terminal, singly, up to 206 × 21 µm, with walls up to 0.5 µm thick; vascular hyphae 2.4–21 µm wide, with knobby outline, sinuous, scattered to moderately common; clamps not observed. | ||||||||||||||||||||||||||||
| lamella edge tissue | sterile. | ||||||||||||||||||||||||||||
| basidiospores | [60/1/3] (9.0-) 10.2 - 14.5 (-16.2) × (5.5-) 5.5 - 9.5 (-11.0) μm, (L = 11.8 - 13.2 μm; L' = 12.4 μm; W = 7.4 - 8.1 μm; W' = 7.8 μm; Q = (1.19-) 1.35 - 1.88 (-2.36): Q = 1.46 - 1.80 μm; Q' = 1.60 μm), hyaline, colorless, thin-walled, smooth, inamyloid, ellipsoid to elongate, occasionally broadly ellipsoid, sometimes lachrimiform, occasionally somewhat flattened adaxially; apiculus sublateral, cylindric; contents monoguttulate; probably white in deposit. | ||||||||||||||||||||||||||||
| ecology | Mexico, Tlaxcala: In forest of Abies, Pinus, and Quercus. U.S.A., New Mexico: At 2690 m elev. In mixed forest of Populus tremuloides, Picea, Abies, Pseudotsuga menziesii, Alnus, and Pinus ponderosa. | ||||||||||||||||||||||||||||
| material examined | MEXICO: TLAXCALA—Mpio. Tlaxco - Sierra Tlaxco, carrera Apizaco-Poza Ricard, km 31, Rancho Escondido, 15.vii.1996 A. Kong-Luz, A. Estrada Torres, R. H. Petersen, et al. s.n. [RET 7-15-96-D] (RET 253-8, nrITS seq'd.; TLXM ??). U.S.A.: ARIZONA—Cochise Co. - CMP site #46, 18.viii.1991 R. E. Tulloss 8-18-91-W [CMP0861] (RET 701-3, nrITS-LSU seq'd.). NEW MEXICO—Taos Co. - 2.4 km N of Red River on Mallette Rd., 5.ix.1993 R. E. Halling 7115 (NY; RET 115-8, nrLSU seq'd.). | ||||||||||||||||||||||||||||
| discussion |
The present species is based on genetic evidence
that supports its being viewed as a distinct sister
species to Amanita
ameripanthera. This species now contains the collection formerly assigned to "Amanita sp-NM06" on this site. Also, the present page contain one of the specimens formerly called "A. sp-AZ07" on this site. | ||||||||||||||||||||||||||||
| citations | —R. E. Tulloss | ||||||||||||||||||||||||||||
| editors | RET | ||||||||||||||||||||||||||||
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