title: Goniothalamusflagellistylus Tagane & V. S. Dang (Annonaceae), a new species from Mt. Hon Ba, Vietnam.
abstract: A new species, Goniothalamusflagellistylus Tagane & V. S. Dang, sp. nov. from Hon Ba Nature Reserve in Khanh Hoa Province, South Vietnam is described and illustrated. This species is most similar to Goniothalamustortilipetalus M.R.Hend., but distinct in having 308-336 stamens (vs. ca. 170-260) and ca.120 carpels (vs. ca. 50-100) per flower, and Stigma and pseudostyles ca.8.5 mm (vs. 4-4.5 mm) long.
authors.affiliation: Center for Asian Conservation Ecology, Kyushu University, 6-10-1 Hakozaki, Fukuoka, 812-8581, Japan.
authors.forename: Shuichiro
authors.initials: S
authors.lastname: Tagane
authors.affiliation: The VNM Herbarium, Institute of Tropical Biology, VAST, 85 Tran Quoc Toan Street, District 3, Ho Chi Minh City, Viet Nam.
authors.forename: Van Son
authors.initials: VS
authors.lastname: Dang
authors.affiliation: Center for Asian Conservation Ecology, Kyushu University, 6-10-1 Hakozaki, Fukuoka, 812-8581, Japan.
authors.forename: Tetsukazu
authors.initials: T
authors.lastname: Yahara
authors.affiliation: Center for Asian Conservation Ecology, Kyushu University, 6-10-1 Hakozaki, Fukuoka, 812-8581, Japan.
authors.forename: Hironori
authors.initials: H
authors.lastname: Toyama
authors.affiliation: University of Science Ho Chi Minh City, 227 Nguyen Van Cu Street, District 5, Ho Chi Minh City, Viet Nam.
authors.forename: Hop
authors.initials: H
authors.lastname: Tran
keywords: Annonaceae; Goniothalamus; Hon Ba Nature Reserve; Vietnam