Revising the species diversity of Hygrophorus section Olivaceoumbrini s.l. (Hygrophoraceae, Agaricales) in China

• Published in: Mycological progress Vol. 21; no. 5
• Main Authors: Huang, Hong-Yan, Zhang, Wen-Hao, Huang, Ting, Jiang, Shuai, Hao, Yan-Jia, Mu, Man, Tang, Li-Ping
• Format: Journal Article
• Language: English
• Published: Berlin/Heidelberg Springer Berlin Heidelberg 01.05.2022; Springer Nature B.V
• Subjects: Biomedical and Life Sciences; Chemical reactions; Ecology; Geographical distribution; Host preferences; Hylophilus brunneiceps; Life Sciences; Microbiology; New records; New species; Original Article; Plant Sciences; Species diversity; Systematics; China; Host preferences; Molecular systematics; New taxa; Taxonomy; Mushroom; Wax cap
• ISSN: 1617-416X; 1861-8952
• DOI: 10.1007/s11557-022-01789-x

Nine species in Hygrophorus sect. Olivaceoumbrini s.l. were studied based on their morphology, molecular systematics, and chemical reactions. Among them, three new species ( H. atrofuscus , H. brunneiceps , and H. habaensis ) are described, two new records ( H. agathosmoides and H. pinophilus ) from China are reported, and four known species ( H. agathosmus , H. annulatus , H. glutinifer , and H. konhonenii ) are rechecked. There are currently six taxa within sect. Olivaceoumbrini s.l. in China, including H. annulatus in sect. Olivaceoumbrini s.s.; H. atrofuscus in sect. Limacini ; H. habaensis in sect. Nudolidi ; and H. agathosmoides , H. brunneiceps , and H. pinophilus in sect. Tephroleuci . Some species occur in forests at the subalpine to alpine belt of southwestern China, such as H. annulatus , H. atrofuscus , and H. habaensis , whereas H. brunneiceps is widely distributed in western China. Several species were confirmed to have transcontinental distributions in this study: H. pinophilus occurs in Eurasia, and H. agathosmoides has a Holarctic distribution. The occurrence of H. agathosmus , H. glutinifer (= H. persoonii ), and H. olivaceoalbus in China is doubtful and requires further exploration. The geographical distribution and host preference of some species in sect. Olivaceoumbrini s.l. are discussed.