Two new species of the genus Leccinellum (Boletaceae, Boletales) from the south of China

Abstract

Two new species of Leccinellum, viz. L. alborufescens and L. fujianense are described based on morphological and molecular evidence. Both species have a rugulose or pitted brown pileus, a red color change of hymenophore and context, and a pileipellis and stipitipellis composed of chains of subglobose to pyriform cells. The differences between them are the width of the hyphae in the pileipellis and the range of distribution as well as the molecular data. Leccinellum alborufescens has hyphae in the pileipellis up to 13 μm in width, and a distribution in tropical China, whereas L. fujianense has pileipellis hyphae up to 20 μm in width, and a distribution in subtropical China. Detailed descriptions, color photos of fresh basidiomata and line drawings of the microstructures of the two new species are presented.

Concordance of multigene genealogy along with morphological evidence unveils five novel species and two new records of boletoid mushrooms (fungi) from India

“…fujianense have distinctively smaller basidiospores and are known to occur in tropical and subtropical forests, respectively, whereas L . bothii is found in temperate mixed forests 10 . Further, L. binderi K. Das, A. Ghosh & Vizzini, another recently discovered species from the same locality easily falls apart from L. bothii by differently looking pileus (hemispherical to convex to applanate pileus with subtomentose to cracked pileus surface, yellowish brown to greyish yellow in colour), differently featured stipe context (never turning greyish orange near base) and distinctively larger basidiospores (13.8–18.22–22 × 5.4–5.96–7 µm) 5 .…”

“…However, both L. alborufescens and L. fujianense can be differentiated from the present species by showing the change in the overall colour of stipe surface to red (in L. bothii, never changes to red except at base that becomes pale orange), pileus and stipe context to red (in L. bothii, pileus context remains unchanged, stipe context changes to greyish black except near base that changes to greyish orange). Additionally, L. alborufescens and L. fujianense have distinctively smaller basidiospores and are known to occur in tropical and subtropical forests, respectively, whereas L. bothii is found in temperate mixed forests 10 . Further, L. binderi K. Das, A. Ghosh & Vizzini, another recently discovered species from the same locality easily falls apart from L. bothii by differently looking pileus (hemispherical to convex to applanate pileus with subtomentose to cracked pileus surface, yellowish brown to greyish yellow in colour), differently featured stipe context (never turning greyish orange near base) and distinctively larger basidiospores (13.8-18.22-22 × 5.4-5.96-7 µm) 5 stipe that is entirely covered with brownish black dot-like squamules arranged in longitudinal rows, cutis pattern of stipitipellis and the occurrence under Carpinus betulus or Corylus avellana 9,11,12 .…”

Austroboletus brunneisquamus (Boletaceae, Boletales), a New Ectomycorrhizal Fungus from a Tropical Rainforest, China

“…Baker) Wolfe and A. subvirens (Hongo) Wolfe were reported in previous studies [1,[12][13][14][15]. Hainan, a tropical area covered mostly by rainforests, is considered as a hotspot of biodiversity, and many new taxa of macrofungi were described from the region in the past [16][17][18][19][20][21][22][23][24][25]. With further investigations, more new taxa are expected to be uncovered.…”

Four Novel Species and Two New Records of Boletes from India

“…The newly generated nrITS, nrLSU, rpb2, and tef 1-α sequences of Leccinellum binderi, Cyanoboletus paurianus, C. macroporus, Xerocomus fraternus, X. uttarakhandae, and Xerocomellus himalayanus, plus similar ones, were retrieved from a nBLAST search against GenBank (https: //www.ncbi.nlm.nih.gov/genbank, accessed on 9 May 2023), UNITE database (https:// unite.ut.ee, accessed on 9 May 2023) and relevant published phylogenies [2,5,[32][33][34][35][36][37]. Four datasets (nrITS, nrLSU, rpb2, and tef 1-α) were created separately.…”