Thesium nautimontanum, a new species of Thesiaceae (Santalales) from South Africa
Date
2018
Journal Title
Journal ISSN
Volume Title
Publisher
Pensoft Publishers
Abstract
Thesium nautimontanum, a new species of Thesiaceae (Santalales) from South Africa
Thesium nautimontanum M.A. García, Nickrent & Mucina, a new species from the Matroosberg Mt. of Western Cape Province of South Africa, is described and illustrated. This species shows several morphological features unusual for the genus including stem sympodial branching, indeterminate spicate inflorescences subtended by numerous bracts and fleshy, non-trichome tissue lining the inside of the corolla lobes. Molecular phylogenetic analyses using nuclear ribosomal internal transcribed spacer sequences place this taxon as sister to all African, Madagascan and South American Thesium species. Given that only two proximal populations are known, this species is of conservation concern.
Thesium nautimontanum M.A. García, Nickrent & Mucina, a new species from the Matroosberg Mt. of Western Cape Province of South Africa, is described and illustrated. This species shows several morphological features unusual for the genus including stem sympodial branching, indeterminate spicate inflorescences subtended by numerous bracts and fleshy, non-trichome tissue lining the inside of the corolla lobes. Molecular phylogenetic analyses using nuclear ribosomal internal transcribed spacer sequences place this taxon as sister to all African, Madagascan and South American Thesium species. Given that only two proximal populations are known, this species is of conservation concern.
Description
CITATION: Garcia, M. A., Nickrent, D. L. & Mucina, L. 2018. Thesium nautimontanum, a new species of Thesiaceae (Santalales) from South Africa. PhytoKeys, 109:41-51, doi:10.3897/phytokeys.109.28607.
The original publication is available at https://phytokeys.pensoft.net
The original publication is available at https://phytokeys.pensoft.net
Keywords
Thesium nautimontanum -- Morphology, Santalaceae, Rare plants -- South Africa -- Matroosberg, Endangered species -- South Africa, Endangered species -- Phylogeny -- Molecular aspects
Citation
Garcia, M. A., Nickrent, D. L. & Mucina, L. 2018. Thesium nautimontanum, a new species of Thesiaceae (Santalales) from South Africa. PhytoKeys, 109:41-51, doi:10.3897/phytokeys.109.28607