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| Hoya fauziana ssp. angulata Rodda, A.L.Lamb, Gokusing & S.Rahayu |
Abstract
A new Hoya subspecies from Borneo and Sumatra, Hoya fauziana ssp. angulata is described and illustrated. Both subspecies of Hoya fauziana have long lanceolate leaves, pubescent corollas and prominent ovoid corona lobes. They can be separated by the orientation of the pedicels (straight in H. fauziana ssp. fauziana and angled in H. fauziana ssp. angulata) and the type and position of pubescence of the corolla (tube and lobes pubescent with evident sericeous hairs in H. fauziana ssp. fauziana vs only tube finely pubescent in H. fauziana ssp. angulata).
Keywords: Asclepiadaceae; Hill Dipterocarp Forest; Indonesia; Kalabakan; Kalimantan; Malaysia; Sabah; Southeast Asia; epiphyte
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| Fig. 2 Hoya fauziana ssp. angulata Rodda,A.L.Lamb, Gokusing & S.Rahayu. Living plant flowering in cultivation at Kipandi Park, Sabah, Malaysia.
— Photo by Steven Bosuang.
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| Fig. 1 Hoya fauziana ssp. angulata Rodda,A.L.Lamb, Gokusing & S.Rahayu. a. Corolla, top view; b. pedicel and calyx, side view; c. corona, from underneath; d. pedicel and calyx, top view; e. flower and pedicel, side view; f. pollinarium (Gokusing LG56/2017 (SAN)).
— Drawn by Xiang Yun Loh.
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Hoya fauziana ssp. angulata Rodda, A.L.Lamb, Gokusing & S.Rahayu, subsp. nov.
Distinguished from H. fauziana ssp. fauziana by the orientation of the flowers, all facing the same direction (vs perpendicular to the pedicel axis in H. fauziana ssp. fauziana) and by the fine pubescence of the corolla tube (vs long sericeous trichomes on the corolla tube and lobe in H. fauziana ssp. fauziana).
Type: L. Gokusing LG56/2017 (holo SAN), Malaysia, Sabah, Tawau, Kalabakan area, Mixed Hill Dipterocarp Forest, 16 May 2017.
M. Rodda, A.L. Lamb, L. Gokusing and S. Rahayu. 2017. Hoya fauziana ssp. angulata (Apocynaceae, Asclepiadoideae), A New Subspecies from Borneo and Sumatra. Blumea - Biodiversity, Evolution and Biogeography of Plants. DOI: 10.3767/blumea.2018.63.02.10
