摘要
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.
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 inJusticia 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 Pseuderanthemurn lineage in tribe Justi- cieae. Wuacanthus is closely related to Pseuderanthernum but differs from the latter by its shorter corolla tube and two minute spurs at the base of each anther-theca. W. rnicrodontus is assessed with the status EN B2ab （iii） based on the IUCN Red List Categories and Criteria.
基金
supported by the National Natural Science Foundation of China (grant nos. 30670124,31270247,31470302,31400184,31670191,31110103911)
Science and Technology Basic Work (grant no. 2013FY112100)
