Hoya bordenii

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Hoya bordenii
Systematics
Order : Enzianartige (Gentianales)
Family : Dog poison family (Apocynaceae)
Subfamily : Silk plants (Asclepiadoideae)
Tribe : Marsdenieae
Genre : Wax flowers ( hoya )
Type : Hoya bordenii
Scientific name
Hoya bordenii
Schltr.

Hoya bordenii is a plant of the genus of wax flowers ( Hoya ) of the subfamily of asclepiadoideae (Asclepiadoideae). The distribution of the species is limited to the Philippine island of Luzon .

features

Hoya bordenii has winding and sparsely leafed shoots. The shoots are thread-like and glabrous. The leaves have fleshy stems 1.5 to 2 cm long. The leathery, bare leaf blades are elongated-lanceolate to narrow-elliptical, and long pointed at the outer end. They are 11 to 18 cm long and 2.5 to 4.5 cm wide. The surfaces are dark green and glossy. Under intense sunlight, they can turn reddish-orange in color. The leaf veins are clearly prominent.

The inflorescence consists of 6 to 15 (up to 20) loosely arranged, hanging flowers. It has a diameter of up to 12 cm. The stalk of the inflorescence is 3 to 5 cm long, round and glabrous in cross section. The flowers are spread out in a star shape and have a diameter of about 1 cm. The thread-like, bare flower stalks are up to 2.7 cm long. The sepals are ovate, 1.5 mm long and bluntly ending. They are downy hairy at the base. The corolla is light red to dark red in color, with ovate, pointed and strongly curved corolla lobes. The staminal corolla lobes are narrowly elliptical and tapering to a point. They are flat and have an elongated back in the middle. The color varies from dark red to yellow. The extension of the stamens has a narrow sickle-shaped shape. The pollinia are cylindrical and elongated. The translator is relatively short and the tiny corpuculum is rhombic in shape. The flowers do not smell, or only very little. They are only open for a few days.

Geographical distribution and habitat

Hoya bordenii has so far only been found on the Philippine island of Luzon. The holotype was found in the Prov. Bataan collected. Other finds come from the provinces of Benguet , Laguna (Mount Makiling ), Quezon / Laguna ( Banahaw ), Bulacan , Cavite , Pangasinan and Sorsogon (Mt. Bulusan ). It occurs from the lower coastal forests up to about 1000 m above sea level.

Taxonomy

Hoya bordenii was first described by Rudolf Schlechter in 1906 in the Philippine Journal of Science. The type specimen was found by a collector named Borden in June 1904 in forests on Mount Mariveles (Prov. Bataan , Luzon , Philippines) at 650 m above sea level. So far there are no synonyms.

supporting documents

literature

  • Focke Albers, Ulli Meve (ed.): Succulent lexicon. Volume 3: Asclepiadaceae (silk plant family). 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

  1. ↑ a b c Website of Simone Merdon-Bennack: Hoya bordenii ( Memento of October 8, 2007 in the Internet Archive )
  2. ↑ a b Wennström, Stenman: The Genus Hoya ... 2008, p. 30.
  3. ^ Digital Flora of the Philippines
  4. ^ Rudolf Schlechter: New Philippine Asclepiadaceae . In: Philippine Journal of Science. 1 (suppl.). Manila 1906, pp. 295-304. First description of Hoya bilobata p. 302

Web links