Wuacanthus (Acanthaceae), a new Chinese endemic genus segregated from Justicia (Acanthaceae)

Plant Diversity
Yunfei DengHua Peng

Abstract

A new genus, Wuacanthus Y.F. Deng, N.H. Xia & H. Peng (Acanthaceae), is described from the Hengduan Mountains, China. Wuacanthus is based on Wuacanthus microdontus (W.W.Sm.) Y.F. Deng, N.H. Xia & H. Peng, originally published in Justicia and then moved to Mananthes. The new genus is characterized by its shrub habit, strongly 2-lipped corolla, the 2-lobed upper lip, 3-lobed lower lip, 2 stamens, bithecous anthers, parallel thecae with two spurs at the base, 2 ovules in each locule, and the 4-seeded capsule. Phylogenetic analyses show that the new genus belongs to the Pseuderanthemum lineage in tribe Justicieae. Wuacanthus is closely related to Pseuderanthemum but differs from the latter by its shorter corolla tube and two minute spurs at the base of each anther-theca. W. microdontus is assessed with the status EN B2ab (iii) based on the IUCN Red List Categories and Criteria.

Datasets Mentioned

BETA
KP744188
EU087457
EU087454
1
EU087450
AF169843
AF169838
AF169848
AF169839
AF169847

Methods Mentioned

BETA
PCR

Software Mentioned

SeqMen
MrBayes
Smile View
ClustalX
Modeltest
EditPlus

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