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Pollen morphology of Parainvolucrella scabra (A–C from Mingdeng Yuan & Yida Xu YS398, brevistylous flower D–F from Mingdeng Yuan & Yida Xu YS399, longistylous flower) A, D equatorial view B, E polar view C, F double microreticulate ornamentation of mesocolpium.
Source publication
Parainvolucrella R.J. Wang, a new monotypic genus for P. scabra (Wall. ex Kurz) M.D.Yuan & R.J.Wang, new combination, is segregated from the Hedyotis - Oldenlandia complex, based on morphological and molecular evidence. Phylogenetically, the new genus is sister to Scleromitrion , from which it differs by a combination of morphological characters: h...
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A new species of Hedyotis L. (Rubiaceae), Hedyotis konhanungensis B.H. Quang, T.A. Le, K.S. Nguyen & Neupane, is described and illustrated from the central highlands of Vietnam based on morphological and phylogenetic evidence. The new species belongs to the morphologically diverse tribe Spermacoceae (ca. 1000 species) of the family Rubiaceae, which...
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Citations
... The systematics of the tribe Spermacoceae genera is historically among the most challenging within the family Rubiaceae (Davis et al., 2009;Kårehed et al., 2008). In recent years, the reassessment of generic boundaries within Spermacoceae based on molecular phylogenies and morphological data advanced, resulting in the description of several new genera Salas et al., 2015;Xu et al., 2021). Within the tribe, the Spermacoce clade (Kårehed et al., 2008) has historically been one of the most taxonomically complex and controversial groups within the family, particularly regarding generic classification (Dessein, 2003;. ...
