Four new species and a new Chinese record of the nectrioid fungi

Abstract

Four new species belonging to Bionectria, Calonectria, Haematonectria and Neonectria on plant substrates collected from nature reserves in southern and central China are described. Bionectria truncata has smooth perithecia of a flattened to shallow discoid apex, clavate asci with an apical ring, and ellipsoid, smooth to spinulose ascospores. Calonectria dicephalospora is characterized by pyriform perithecia with a warted surface, clavate asci with a simple apex and long, narrow stalk, and fusoid ascospores with a cap-like appendage at each end. Haematonectria lushanensis possesses warted perithecia which are laterally collapsing when dry, cylindrical asci with a simple apex, and ellipsoid, spinulose ascospores. Neonectria dinghushanica is distinguishable by subglobose perithecia with a warted surface, clavate asci, and striate ascospores. Morphological features of these new species are described comprehensively and compared with their related fungi. Neonectria castaneicola is recorded as new to China.

DNA barcoding of the fungal genus Neonectria and the discovery of two new species

“…The methods of Rossman et al [22] and Luo and Zhuang [31,32] were generally followed for morphological characterization. Water was used as mounting fluid for microscopic examinations and measurements, and photographs were taken from water or lactic acid mounts with a Canon G5 (Tokyo, Japan) digital camera connected to a Zeiss Axioskop 2 plus microscope (Göttingen, Germany).…”

“…Species belonging to the Nectria mammoidea-Group, Nectria rugulosa-Group, Nectria radicicola-Group and Nectria veuillotiana-Group were later assigned to the genus [23,24]. More recently, quite a few species were added to the genus [25][26][27][28][29][30][31][32]. As the number of species increased, it became necessary to investigate a DNA barcode for the genus to get a better understanding of the species diversity of the group.…”

New Species of Neocosmospora (Ascomycota) from China as Evidenced by Morphological and Molecular Data

“…Chen & X.H. Fu) were first reported by Chen et al [48], five additional new species of the genus were successively described from different provinces of China [3,9,49,50]. Among these seven species, four taxa, namely, N. lithocarpi, N. pallidimors Tibpromma, Karun., Karasaki & P.E.…”