Hoya shepherdii
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Hoya shepherdii is a plant of the genus of wax flowers ( Hoya ) of the subfamily of asclepiadoideae (Asclepiadoideae).
description
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Vegetative characteristics
Hoya shepherdii is a perennial herbaceous plant and grows epiphytically and climbs on rocks. The stem axes with a diameter of 2 millimeters are up to 1 meter long.
The opposite or individually standing leaves are divided into petioles and leaf blades. The short petiole is round in cross-section and curved downwards. The leaf blade therefore hangs down. The fleshy to leathery, slightly succulent leaf blades are dark green in color with a smooth, shiny surface, the underside being slightly paler than the upper side. The leaf blade is about 15 centimeters long and about 1 centimeter wide (11 centimeters long, 2 centimeters wide) linear-lanceolate with a long, pointed upper end. In cross-section, the leaf blade is V-shaped and the top is rutty. The leaf veins are not visible.
Generative characteristics
New inflorescences appear on the leaf nodes between the leaves, but also repeatedly on the withered inflorescence stalks. The compact hemispherical, dold-like inflorescence measures up to about 5 cm in diameter and contains five to twelve (up to 15) flowers. The club-like inflorescence stem is 1 to 4 inches long.
The flowers smell strongly. The hermaphroditic flower is about 1.3 to 1.5 centimeters in diameter and is radially symmetrical and five-fold. The flower color is white to pink. The five sepals are broadly triangular. The five petals are fused at the base. The corolla lobes are broadly triangular and mostly stretched slightly upwards, so that the bloom appears flat as a clock-glass. The tips of the petal lobes are slightly bent back. The surface of the petal lobes is densely covered with rough, white hairs. The secondary crown is whitish. The tips of the staminal secondary crown are broadly ovate with a tapering, ascending process. The inner process is pointed and dark purple.
Similar species
Hoya shepherdii is similar to Hoya longifolia and has already been taken as a synonym of this species. Hoya longifolia has longer and narrower leaves, which are also not as succulent. The inflorescences of Hoya longifolia are larger, the inflorescence shafts longer. The corolla, on the other hand, is flatter in Hoya shepherdii with a shorter stem, and it is also smaller in relation to the diameter of the corolla than in Hoya longifolia . Also Hoya wayetii Kloppenb. has a similar leaf shape, but with completely different flowers.
Occurrence
Hoya shepherdii occurs in the southern Himalayan foothills in Sikkim and in the Khasi Mountains in the northern Indian state of Meghalaya and in the southwestern People's Republic of China . It grows there in mountain rainforests at altitudes between 1000 and 2000 meters.
Taxonomy
The first description of Hoya shepherdii was in 1861 by William Jackson Hooker in Volume 87 of Curtis Botanical Magazine on plate 5269 (with text). Because of the shape of the leaf, Hoya became shepherdii Hook. also as a synonym of Hoya longifolia Wall. ex Wight understood.
supporting documents
literature
- Christiane Hoffmann, Ruurd van Donkelaar, Focke Albers: Hoya. In: Focke Albers, Ulli Meve (Hrsg.): Succulents Lexicon Volume 3 Asclepiadaceae (silk plants). Ulmer, Stuttgart 2002, ISBN 3-8001-3982-0 , pp. 147-160 ( Hoya shepherdi. P. 158).
- Dale Kloppenburg, Ann Wayman: The World of Hoyas - a book of pictures. A revised version. Orca Publishing Company, Central Point, Oregon 2007, ISBN 0-9630489-4-5 , p. 232 brief description and p. 223 photo by Dale Kloppenburg
Individual evidence
- ↑ Surisa Somadee, Jens Kühne: Hoya 200 different wax flowers. Formosa-Verlag, Witten 2011, ISBN 978-3-934733-08-4 , p. 76.
- ↑ a b Anders Wennström, Katarina Stenman: The Genus Hoya - Species and Cultivation. Botanova, Umeå 2008, ISBN 978-91-633-0477-4 , p. 121.
- ↑ Curtis 1861 scanned in at www.biodiversitylibrary.org (plate 5269 + text)
- ↑ Hiroshi Hara: Asclepiadaceae. In: Hiroshi Hara (Ed.): The flora of the eastern Himalaya. Second report. University Press, Tokyo 1971, pp. 108-110.
