Thursday, November 26, 2015

[Botany • 2014] Three New Species of Annonaceae from West Kalimantan, Indonesian Borneo; Cyathocalyx tsukayae, Mitrephora imbricatarum-apicum & Orophea sagittalis


Fig. 1. A: Flower of Cyathocalyx tsukayae. About ×1/3. B: Fruit of C. tsukayae. About ×1/4.
C: branch with flower of Mitrephora imbricatarum-apicum. Scale = 1 cm. D: Closeup of flower of M. imbricatarum-apicum. Note recurved outer petals, and imbricate, but not cohering apexes of inner petals. Scale = 1 mm.
E: Flower of Orophea sagittalis. Scale = 1 mm. 


Three new species of Annonaceae; Cyathocalyx tsukayae, Mitrephora imbricatarum-apicum and Orophea sagittalis, are described based on materials newly collected from Betung-Kerihun National Park, West Kalimantan, Indonesia. 

Keywords: Annonaceae, biodiversity, Borneo, Cyathocalyx, Mitrephora, new species, Orophea, West Kalimantan, wet tropics

Fig. 1. A: Flower of Cyathocalyx tsukayae. About ×1/3. B: Fruit of C. tsukayae. About ×1/4. C: branch with flower of Mitrephora imbricatarum-apicum. Scale = 1 cm. D: Closeup of flower of M. imbricatarum-apicum. Note recurved outer petals, and imbricate, but not cohering apexes of inner petals. Scale = 1 mm. E: Flower of Orophea sagittalis. Scale = 1 mm. F: Nectary pattern of adaxial surface of inner petal of slightly immature flower (pickled material). Scale = 1 mm.


Hiroshi Okada. 2014. Three New Species of Annonaceae from West Kalimantan, Indonesian Borneo. Acta Phytotax. Geobot. 65(1): 17–24.  http://ci.nii.ac.jp/naid/110009816919/en


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