Agaricales » Inocybaceae » Auritella

Auritella dolichocystis

Auritella dolichocystis Matheny, Trappe & Bougher ex Matheny & Bougher 2006, in Matheny & Bougher, Mycological Progress, 5, 2-17 (2006).

Diagnosis: Pileus 1.24.0 cm diameter, convex to plane, surface dry, disc glabrous to obscurely fibrillose, towards margin finely fibrillose to fibrillose, at times slightly sulcate but not striate, edge of pileus appressed against the stipe when young; light yellowish brown to light brown; context brownish white or pale brown, up to 5 mm thick, odor not distinctive or faintly sweetly pungent. Lamellae adnexed, becoming adnate to adnate-subdecurrent; lamellulae infrequent, brownish gray to light grayish brown when young, dull brown with age; edges pallid fimbriate. Stipe 0.72.7 cm×410 mm, cortina absent even on young basidiomes, longitudinally fibrillose, subsquamulose when young, the upper half or apical 12 mm sparsely pruinose, white at apex, brownish white to pale brown below, or concolorous with pileus. Basidiospores (7.0) 7.58.6 to 10.5×4.04.8 to5.5 μm;Q= (1.40) 1.501.81 to 2.25 (2.63) (n=57/5), smooth, elliptic, less frequently (sub) amygdaliform to phaseoliform; Ochraceous- Tawnyto Ochraceous-Buff, with slightly thickened walls; apiculus indistinct but at times distinct (Figure 1a). Basidia 3045×710 μm, 4-sterigmate, (narrowly) clavate, ochraceous to hyaline (Figure 1b). Pleurocystidia none. Cheilocystidia (42) 4575 (82)×914 (16) μm, subfusiform, sublageniform to slenderly clavate with median to basal subventricose swelling, apices swollen to subcapitate; thin-walled, hyaline to ochraceous (Figure 1c). Caulocystidia present and frequent at apex of stipe, usually similar to cheilocystidia, at times lacking subcapitate apices or shorter, in clusters, irregularly cylindric, fusiform to clavate; stipe hyphae brownish yellow to hyaline, 310 μm diameter; refractive hyphae frequent. Lamellar trama parallel. Pileipellis a cutis of incrusted, cylindric hyphae, 413 μm diam, ochraceous-tawny in mass; tramal hyphae brownish yellow in mass, cylindric. Clamps present.

Index Fungorum Number: IF356962 

Figure 1 Microscopic characters of A. dolichocystis (type) and A. chamaecephala (type). a Spores of A. dolichocystis. b Basidia of A. dolichocystis. c Cheilocystidia of A. dolichocystis. d Spores of A. chamaecephala. e Basidia of A. chamaecephela. f Cheilocystidia of A. chamaecephala. The scale bar is equal to 10 μm for spores and 25 μm for basidia and cheilocystidia.



Figure 2. ML clock phylogeny of Auritella. Numbers above branches represent bootstrap values. Australian taxa are monophyletic and highlighted in the large light grey box. The African branch is boxed in dark grey. Geographic origin of each terminal branch is indicated on the far right (NSW, New South Wales; WA, Western Australia). Plant family associates are also indicated under each taxon name in Auritella for the accession sequenced. The arrow refers to the node that was calibrated at 15 Ma. A divergence time-line is shown with divergence dates and their associated standard errors. The outgroups Inocybe terrigena and I. unicolor were used to estimate the two branches that stem from the node between A. aureoplumosa and the remainder of Auritella. The outgroups were pruned (dashed lines) before divergence dates were estimated.


Matheny, P. B., & Bougher, N. L. (2006). The new genus Auritella from Africa and Australia (Inocybaceae, Agaricales): molecular systematics, taxonomy and historical biogeography. Mycological Progress, 5, 2-17.


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