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Issue: Vol. 678 No. 3: 31 Dec. 2024
Type: Article
Published: 2024-12-31
DOI: 10.11646/phytotaxa.678.3.5
Page range: 193-200
Abstract views: 106
PDF downloaded: 13

Petrocosmea albocaerulea (Gesneriaceae), a new species from northwestern Vietnam

Graduate University of Science and Technology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay District, Hanoi, Vietnam. Institute of Regional Research and Development, Ministry of Science and Technology, No. 70, Tran Hung Dao, Hoan Kiem District, 100000 Hanoi, Vietnam.
Graduate University of Science and Technology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay District, Hanoi, Vietnam. Institute of Ecology and Biological Resources, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet Road, Cau Giay District, Hanoi, Vietnam.
Graduate University of Science and Technology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay District, Hanoi, Vietnam.
Institute of Ecology and Biological Resources, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet Road, Cau Giay District, Hanoi, Vietnam.
Department of Higher Plants, Biological Faculty, M.V. Lomonosov Moscow State University, 1, 12, Leninskie Gory, 119234 Moscow, Russia. Joint Russian-Vietnamese Tropical Scientific and Technological Center, 63, Nguyen Van Huyen Street, Cau Giay District, 122000 Hanoi, Vietnam.
Dien Bien Province flora Lai Chau Province Petrocosmea section Anisochilus taxonomy Eudicots

Abstract

Petrocosmea albocaerulea, a new species of Gesneriaceae, is described and illustrated. The species was discovered in 2018 and 2023 during botanical surveys in two neighboring northwestern provinces of Vietnam, close to the tri-border area of Vietnam, China and Laos. Petrocosmea albocaerulea is distinct from its congeners by the following features: several-flowered inflorescences, corolla with white tube and light blue lobes, corolla glabrous inside, corolla lobes not longer than the tube, glabrous stamen filaments, anthers rounded at the apex, and style hairy near base and glabrous otherwise. A need for a thorough reconsideration of the sectional subdivision of Petrocosmea is highlighted.

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