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Asperula sect. Chlorostemma Lange
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Flora of China Editorial Committee. 2011. Flora of China (Curcurbitaceae through Valerianaceae with Annonaceae and Berberidaceae). 19: 1–884. In C. Y. Wu, P. H. Raven & D. Y. Hong (eds.) Fl. China. Science Press & Missouri Botanical Garden Press, Beijing & St. Louis.
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Asperula sect. Cruciana Griseb.
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Ehrendorfer, F. & M. H. J. Barfuss. 2014. Paraphyly and Polyphyly in the Worldwide Tribe Rubieae (Rubiaceae): Challenges for Generic Delimitation. Ann. Missouri Bot. Gard. 100(1–2): 79–88.
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Asperula sect. Cynanchicae (DC.) Boiss.
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Ehrendorfer, F. & M. H. J. Barfuss. 2014. Paraphyly and Polyphyly in the Worldwide Tribe Rubieae (Rubiaceae): Challenges for Generic Delimitation. Ann. Missouri Bot. Gard. 100(1–2): 79–88.
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Asperula sect. Dioicae Airy Shaw & Turrill
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Ehrendorfer, F. & M. H. J. Barfuss. 2014. Paraphyly and Polyphyly in the Worldwide Tribe Rubieae (Rubiaceae): Challenges for Generic Delimitation. Ann. Missouri Bot. Gard. 100(1–2): 79–88.
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Asperula sect. Glabella Griseb.
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Ehrendorfer, F. & M. H. J. Barfuss. 2014. Paraphyly and Polyphyly in the Worldwide Tribe Rubieae (Rubiaceae): Challenges for Generic Delimitation. Ann. Missouri Bot. Gard. 100(1–2): 79–88.
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Asperula sect. Hexaphylla Ehrend.
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Ehrendorfer, F. & M. H. J. Barfuss. 2014. Paraphyly and Polyphyly in the Worldwide Tribe Rubieae (Rubiaceae): Challenges for Generic Delimitation. Ann. Missouri Bot. Gard. 100(1–2): 79–88.
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Asperula sect. Oppositifolia Schischk. ex Schönb.-Tem.
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Ehrendorfer, F. & M. H. J. Barfuss. 2014. Paraphyly and Polyphyly in the Worldwide Tribe Rubieae (Rubiaceae): Challenges for Generic Delimitation. Ann. Missouri Bot. Gard. 100(1–2): 79–88.
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Asperula sect. Thliphthisa (Griseb.) Ehrend.
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Ehrendorfer, F. & M. H. J. Barfuss. 2014. Paraphyly and Polyphyly in the Worldwide Tribe Rubieae (Rubiaceae): Challenges for Generic Delimitation. Ann. Missouri Bot. Gard. 100(1–2): 79–88.
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Chlorostemma (Lange) Fourr.
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Flora of China Editorial Committee. 2011. Flora of China (Curcurbitaceae through Valerianaceae with Annonaceae and Berberidaceae). 19: 1–884. In C. Y. Wu, P. H. Raven & D. Y. Hong (eds.) Fl. China. Science Press & Missouri Botanical Garden Press, Beijing & St. Louis.
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