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Faculty for Biology, Chemistry, and Earth Sciences

Department of Plant Systematics: Angiosperm Working Group - Prof. Dr. Sigrid Liede-Schumann

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Liede-Schumann, S; Meve, U: The Orthosiinae revisited (Apocynaceae, Asclepiadoideae, Asclepiadeae), Annals of the Missouri Botanical Garden, 99(1), 44-81 (2013), doi:http://dx.doi.org/10.3417/2010130 [Link]
Key words: Apocynaceae, Asclepiadoideae, Central America, Cynanchum, Jobinia, Monsanima, Orthosia, Orthosiinae, Scyphostelma, South America
The subtribe Orthosiinae (Apocynaceae, Asclepiadoideae, Asclepiadeae) is monophyletic and comprises four genera. Monsanima Liede & Meve is herein validly established, comprising one species, M. morrenioides (Goyder) Liede & Meve. This new genus is sister to a clade consisting of Jobinia E. Fourn., Orthosia Decne., and Scyphostelma Baill. A taxonomic key to these four genera is provided. For Jobinia, one species, J. peruviana Liede & Meve, is newly described, and 13 species previously treated principally under Cynanchum L. are transferred, so that the genus now comprises 25 species. Jobinia fontellana Liede & Meve is proposed as a new name, replacing O. hatschbachii Fontella & Goes. The following new combinations are made in Jobinia: J. canoi (Morillo) Liede & Meve, J. formosa (N. E. Br.) Liede & Meve, J. latipes (Decne.) Liede & Meve, J. mazzuchii (Speg.) Liede & Meve, J. samuelssonii (Malme) Liede & Meve, J. schizocorona (Liede & Meve) Liede & Meve, J. streptantha (Malme) Liede & Meve, J. tarmensis (Schltr.) Liede & Meve, J. tiarata (Malme) Liede & Meve, J. trifurcata (Griseb.) Liede & Meve, and J. umbellata (Rusby) Liede & Meve. In Orthosia, the new combination O. angustifolia (Turcz.) Liede & Meve is made. Orthosia thymifolia Schltr. is excluded from the genus and the new combination Ditassa thymifolia (Schltr.) Liede & Meve (Metastelmatinae) is proposed. The genus Scyphostelma is reinstated, and 26 species, most previously in Cynanchum, are transferred: S. beckii (Morillo) Liede & Meve, S. bifida (Liede & Meve) Liede & Meve, S. brachyphylla (K. Schum.) Liede & Meve, S. carmenaemiliae (Morillo) Liede & Meve, S. chimboracensis (Morillo) Liede & Meve, S. confusa (R. W. Holm) Liede & Meve, S. ecuadorensis (Schltr.) Liede & Meve, S. filisepala (Standl.) Liede & Meve, S. harlingii (Morillo) Liede & Meve, S. intricata (K. Schum.) Liede & Meve, S. isidrensis (Morillo) Liede & Meve, S. lechleri (Morillo) Liede & Meve, S. longecalicina (Morillo) Liede & Meve, S. luteynii (Morillo) Liede & Meve, S. microphylla (Kunth) Liede & Meve, S. nubicola (Morillo) Liede & Meve, S. pichinchensis (K. Schum.) Liede & Meve, S. ruizteranii (Morillo) Liede & Meve, S. serpyllifolia (Kunth) Liede & Meve, S. siderocalyx (Morillo) Liede & Meve, S. sodiroi (K. Schum.) Liede & Meve, S. tenella (L. f.) Liede & Meve, S. trianae (Schltr.) Liede & Meve, S. veleziae (Morillo) Liede & Meve, S. velutina (Morillo) Liede & Meve, and S. wurdackii (Morillo) Liede & Meve. Ten names are lectotypified: C. ecuadorense Schltr., J. formosa, J. tarmensis, J. tiarata, J. trifurcata, J. umbellata, S. brachyphylla, S. ecuadorensis, S. intricata, and S. pichinchensis. Three names are neotypified: J. chlorantha (K. Schum.) Malme, S. sodiroi, and S. trianae.
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