Hoya chunii
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Hoya chunii (Syn .: Hoya reticulata Schltr.) Is a plant of the genus of wax flowers ( Hoya ) of the subfamily of asclepiadoideae (Asclepiadoideae).
features
Hoya chunii is an epiphytic , climbing and winding subshrub with thread-like, sparsely branched shoots. The loosely leafed shoots are flexible, round and bare in cross-section. The spread, opposite leaves are short-stalked, the fleshy petioles, which are slightly deepened on the upper side, are 0.6 to 1 cm long. The fleshy-leathery leaf blades are elliptical, 6.5 to 10 cm long and 3 to 5 cm wide in the middle. They are bare on the top and bottom. The base is blunt-wedge-shaped to rounded, the apex is pointed. The leaf nerve consists of the prominent midrib and 2 pairs of secondary ribs that extend from the midrib near the base of the blade. They are connected by 8 to 10 transverse tertiary ribs.
The almost spherical inflorescence contains 20 to 30 flowers. The inflorescence stalks are up to about 2.5 cm long. Inflorescence stalks and pedicels are bare. The very slender flower stalks of about the same length are up to 2 cm long. The egg-shaped sepals are about 1.5 mm long and warty-dotted on the outside; the apex is blunt. The wheel-shaped, cream-colored-yellowish corolla has a diameter of 1.4 cm. The petals are fused in the basal half. They are bare on the outside and dense on the inside and microscopically papillary. The apices of the rhombic-egg-shaped petals are blunt. The rhombic-egg-shaped corolla lobes are spread out horizontally. They are about 4 mm long. The inner process is beaked, the outer process pointed.
The pollinia are elongated, sloping slightly inward at the apex. The outer hyaline border extends to below the apex. The corpusculum is very small and rhombic. The caudiculae are very short and thin.
Similar Art
Hoya chunii is very similar to Hoya ischnopus , but differs in the shape of the leaves and the different leaf nerve. The flowers are hard to see inside and papilose.
Geographical distribution and habitat
The species occurs near the Saugueti stage at the foot of the Bismarck Mountains in Papua New Guinea . It was worse to find it blooming on trees in October 1908 at about 300 m above sea level.
Taxonomy
The taxon was described by Rudolf Schlechter in 1913 . The holotype is kept under the number Schlechter # 18517 in the herbarium of the Botanical Garden Berlin . Hoya reticulata Schltr. (1913) was preoccupied by Hoya reticulata Moon (1824) and Hoya reticulata Costantin (1912) and was renamed Hoya chunii by PT Li in 1984 .
The Plants of the World online database accepts Hoya chunii as a valid species. Simone Merdon-Bennack has overlooked the older, valid species descriptions ( Hoya reticulata Moon (1824) and Hoya reticulata Costantin (1912)) and continues to list the species under Hoya reticulata .
literature
- Robert Dale Kloppenburg: Dr. Schlechter's Hoya species. Fresno, California, 1993 Online at Biodiversity Heritage Library , pp. 140/41.
Individual evidence
- ^ Rudolf Schlechter: The Asclepiadaceen of German New Guinea. Botanical Yearbooks for Systematics, Plant History and Plant Geography, 50: 81-164, 1913. Online at Biodiversity Heritage Library , p. 115.
- ↑ Ping Tao Li: The New Species and Names of the Genus Hoya R.Br. (Asclepiadaceae). Bulletin of Botanical Research, 4 (1): 118-122, Harbin, 1984 Bulletin of Botanical Research
- ↑ IPNI: Hoya chunii PTLi
- ↑ IPNI: Hoya reticulata Schltr. = Synonym of Hoya chunii Schltr.
- ↑ Kew Science - Plants of the World: Hoya chunii Schltr.
- ^ Website on the genus Hoya by Simone Merdon-Bennack