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Open Access Notes on Justicia sect. Monechma (Acanthaceae) in Angola, including two new species

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Two new species of Justicia sect. Monechma, Justicia cubangensis and J. eriniae, are described from Angola. Their affinities are reviewed, together with a discussion on the correct generic name to apply to these species. A conspectus of Justicia sect. Monechma 'Group I' in Angola is presented, including a key to the species and notes on habitat and distribution for each taxon. Two new combinations and one new name are provided for species for which there was no previous name available in Justicia, and lectotypes are proposed for four names. Twelve species are recognised in this group in total, eight of which are currently believed to be endemic to Angola. Justicia subsessilis is recorded in Angola for the first time, and J. laeta is placed in sect. Monechma, having previously been tentatively referred to sect. Tyloglossa. Monechma carrissoi is considered to be conspecific with J. virgultorum and so is synonymised here. In addition, the botanical importance of the type locality of J. cubangensis, the Cuchi River gorge of the Cubango drainage, is highlighted and two further new provincial records for Cuando Cubango are noted from this site: Eriocaulon angustibracteum (Eriocaulaceae) and Crepidorhopalon schweinfurthii (Linderniaceae).
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Document Type: Research Article

Publication date: September 1, 2019

This article was made available online on May 3, 2019 as a Fast Track article with title: "Notes on Justicia sect. Monechma (Acanthaceae) in Angola, including two new species".

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  • Blumea is an international journal on the biodiversity, evolution and biogeography of plants, including topics on systematics, floristics, phylogeny, morphology and anatomy. For floristic studies, the focus is on tropical Africa south of the Sahara, tropical Southeast Asia with a strong emphasis on Malesia, and South America with emphasis on the Guianas. Papers in Blumea are subjected to peer review and are in English. Blumea is published three times a year, comprising c. 300 pages in total.
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