Abstract
Dentipellistasmanicasp. nov. is described and illustrated from Tasmania, Australia based on rDNA evidence and morphological characters. It is characterised by an annual growth habit; resupinate basidiocarps up to 100 cm long; spines cream when fresh and cinnamon when dry, up to 3 mm long and a few glued at tips when dry; distinct white fibrillous to cottony margin; a monomitic hyphal structure with non-amyloid, non-dextrinoid and cyanophilous generative hyphae; the presence of gloeoplerous hyphae and gloeocystidia which become dark blue in Melzer’s reagent; the presence of chlamydospores in the subiculum and rough basidiospores measuring 3.5–4.5 × 2.4–3.2 µm. A molecular study based on the combined ITS (internal transcribed spacer region) and 28S (the large nuclear ribosomal RNA subunit) dataset supports the new species in Dentipellis. A key to species of Dentipellis sensu stricto is provided.
Highlights
Dentipellis Donk, typified by D. fragilis (Pers.) Donk, is a hydnaceous genus in the Russulales and is characterised by a wood-inhabiting resupinate fruiting body with soft spines, a monomitic hyphal structure with clamp connections on the generative hyphae and amyloid, rough basidiospores (Ginns 1986, Dai et al 2009, Zhou and Dai 2013)
Three sampled specimens of the new species, Dentipellis tasmanica, formed a wellsupported lineage (100% Maximum parsimony (MP) and 1 Bayesian posterior probabilities (BPP)), indicating they are phylogenetically distinct from other species (Fig. 1)
Dentipellis tasmanica is characterised by spines, cream when fresh; distinct white fibrillous to cottony margin; a monomitic hyphal structure with generative hyphae bearing clamp connections; the presence of gloeoplerous hyphae and gloeocystidia which become dark blue in Melzer’s reagent and presence of chlamydospores in the subiculum
Summary
Dentipellis Donk, typified by D. fragilis (Pers.) Donk, is a hydnaceous genus in the Russulales and is characterised by a wood-inhabiting resupinate fruiting body with soft spines, a monomitic hyphal structure with clamp connections on the generative hyphae and amyloid, rough basidiospores (Ginns 1986, Dai et al 2009, Zhou and Dai 2013). Wu from Dentipellis to a new genus of Dentipellicula Y.C. Dai & L.W. Zhou based on ITS and 28S rDNA sequences. Dentipellopsis Y.C. Dai & L.W. Zhou is erected as a new genus and characters are provided in a generic key to distinguish Dentipellicula, Dentipellis and Dentipellopsis that morphologically are highly similar, as well as a key to the current species in Dentipellis (Zhou and Dai 2013). Based on molecular and morphological analyses, more new taxa were described in Dentipellis sensu lato (Zhou and Dai 2013, Chen et al 2015, Shen and Wang 2017, Yuan et al 2018) and, all Dentipellis spp. were found from the northern Hemisphere (Ginns 1986, Dai et al 2009, Zhou and Dai 2013, Shen and Wang 2017, Yuan et al 2018)
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
