Hoya bilobata
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Hoya bilobata |
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Hoya bilobata is a plant of the genus of wax flowers ( Hoya ) of the subfamily of asclepiadoideae (Asclepiadoideae). The small-flowered species is endemic to the Philippine island of Mindanao .
features
Hoya bilobata has branched and densely leafed, climbing shoots, the surfaces of which are slightly downy and hairy. The leaves are stalked, the fleshy stem is up to 3 mm long. The leathery, bald (or downy hairy) leaf blades are elliptical to rounded in outline and 1.7 to 2.2 cm long and 1.3 to 1.8 cm wide.
The inflorescence contains up to 20 pendulous flowers (up to 25 flowers). The stalk of the inflorescence, the surface of which is bare, becomes 1 to 3 cm long and is round in cross section. The flowers are relatively very small with a diameter of about 3 mm. The yellowish, bare flower stalks are very thin, thread-like and up to 8 mm long. The bare sepals are oblong (up to 1 mm) and end bluntly. The corolla is button-like and colored dark pink to red. It is bare on the outside, but densely covered with short papillae on the inside. The bluntly tapering corolla lobes are ovate, approx. 1.5 mm long and strongly rolled outwards. The secondary crown is yellowish or reddish with a yellowish center; sometimes the corolla lobes also have yellowish edges. The outer process of the staminal corolla lobes are whitish and have two columns. The inner process is dark pink, slightly ascending, but depressed in the middle. The pollinia are oblong-cylindrical with short caudiculae. They measure 400 µm in length and 100 µm in width. The tiny corpusculum has the shape of a rhombus. The apical part has three points, of which the middle point is shorter and tilted outwards. The basal part of the corpusculum ends in two short, winged pads. The caudiculae have broad wings and measure approx. 100 µm in length and 50 µm in thickness. The flower has a fine scent of honey (or has little or no scent at all).
Taxonomy
Hoya bilobata was first described in 1906 by Rudolf Schlechter in the Philippine Journal of Science. The type specimen was collected by a collector named Copeland in March 1904 in the province of Davao del Sur on the island of Mindanao . At that time it was considered the "smallest" Hoya of the Philippine archipelago, which is likely to refer to both the growth size and the flowers.
supporting documents
literature
- Focke Albers, Ulli Meve (Hrsg.): Succulent lexicon Volume 3 Asclepiadaceae (silk plants). Ulmer, Stuttgart 2002, ISBN 3-8001-3982-0 , pp. 149-150.
- Dale Kloppenburg, Ann Wayman: The World of Hoyas - a pictorial guide. Orca Publishing, Central Point, Oregon 2007, ISBN 0-9630489-4-5 , pp. 64-65.
- Anders Wennström, Katarina Stenman: The Genus Hoya - Species and Cultivation. Botanova, Umeå 2008, ISBN 978-91-633-0477-4 , p. 30.
Individual evidence
- ↑ a b c www.simones-hoyas.de Website of Simone Merdon-Bennack ( Memento from November 21, 2004 in the Internet Archive )
- ↑ a b Livia Wanntorp: Pollinaria of Hoya (Marsdenieae, Apocynaceae): Shedding Light on Molecular Phylogenetics. In: Taxon. 56 (2) 2007, pp. 465-478. (online at JSTOR)
- ^ Kloppenburg, Wayman: The World of Hoyas. 2007, pp. 64-65.
- ↑ Wennström, Stenman: The Genus Hoya. 2008, p. 30.
- ^ Rudolf Schlechter: New Philippine Asclepiadaceae. In: Philippine Journal of Science. 1 (Suppl.), Manila 1906, pp. 295-304 (first description of Hoya bilobata pp. 301-302), online at archive.org
Web links
- www.simones-hoyas.de - Website of Simone Merdon-Bennack ( Memento from November 21, 2004 in the Internet Archive )
- Margaretha Alma's website ( Memento from July 26, 2018 in the Internet Archive )