Dataset Information

Three new Xylaria species (Xylariaceae, Xylariales) on fallen leaves from Hainan Tropical Rainforest National Park.

ABSTRACT: Three new species of Xylaria on fallen leaves in Hainan Province of China are described and illustrated, based on morphological and molecular evidence. Xylariahedyosmicola is found on fallen leaves of Hedyosmumorientale and featured by thread-like stromata with a long sterile filiform apex. Phylogenetically, X.hedyosmicola is closely related to an undescribed Xylaria sp. from Hawaii Island, USA and morphologically similar to X.vagans. Xylarialindericola is found on fallen leaves of Linderarobusta and characterised by its subglobose stromata and a long filiform stipe. It is phylogenetically closely related to X.siculaf.major. Xylariapolysporicola is found on fallen leaves of Polysporahainanensis, it is distinguished by upright or prostrate stromata and ascospores sometimes with a slimy sheath or non-cellular appendages. Xylariapolysporicola is phylogenetically closely related to X.amphithele and X.ficicola. An identification key to the ten species on fallen leaves in China is given.

SUBMITTER: Pan XY

PROVIDER: S-EPMC8770429 | biostudies-literature |

REPOSITORIES: biostudies-literature

ACCESS DATA

Similar Datasets

Project description:BackgroundXylaria species growing on fallen leaves and petioles have not been treated systematically. One source of confusion in this group of Xylaria species has stemmed from X. filiformis, which is an ancient name published in 1805 as Sphaeria filiformis and has commonly labeled on specimen packets that contain leaf- and petiole-inhabiting Xylaria species. Here we clarified the identity of X. filiformis and distinguish it from the species that are easily confused with it, notably X. simplicissima, to which most specimens labeled as X. filiformis are referred. Our research also led us to encounter many other leaf- and petiole-inhabiting Xylaria species, prompting a comprehensive study of this group of fungi.ResultsForty-five foliicolous and caulicolous species of Xylaria were studied, including nine newly described species-X. allima, X. appendiculatoides, X. hispidipes, X. minuscula, X. neblinensis, X. spiculaticlavata, X. vermiformis, X. vittatipiliformis, and X. vittiformis; three unnamed species-X. sp. AR1741, X. sp. GS7461A, and X. sp. GS7461B; X. simplicissima, a name newly combined with Xylaria from Rhizomorpha simplicissima; and X. noduliformis and X. imminuta, which are two new replacement names, respectively, for X. maitlandii var. nuda and X. hypsipoda var. microspora. The 45 taxa can be classified into three groups by stromatal shape and conspicuousness of perithecial mounds on the stromatal surface: (i) the X. filiformis group contains 10 species, (ii) the X. phyllocharis group contains 19 species, and (iii) the X. heloidea group contains 16 species. One of the newly described or unnamed species belongs to the X. filiformis group-X. vermiformis; nine of them belong to the X. phyllocharis group-X. allima, X. appendiculatoides, Xylaria minuscula, X. neblinensis, X. sp. AR1741, X. sp. GS7461B, X. spiculaticlavata, X. vittatipiliformis, and X. vittiformis; and three of them belong to the X. heloidea group-X. hispidipes, X. imminuta, and X. sp. GS7461A.ConclusionThe 45 species of Xylaria associated with fallen leaves and petioles can be identified by using the dichotomous identification key that we provided herein. It is important to note that most of the studied species are represented by only one or several specimens and many have not been recollected and cultured.

Dataset Information

Three new Xylaria species (Xylariaceae, Xylariales) on fallen leaves from Hainan Tropical Rainforest National Park.

Similar Datasets

OmicsDI is part of the ELIXIR infrastructure

Tweets