Mitrephora polypyrena
| Mitrephora polypyrena | |
|---|---|
Scientific classification 
| |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Magnoliids |
| Order: | Magnoliales |
| Family: | Annonaceae |
| Genus: | Mitrephora |
| Species: | M. polypyrena
|
| Binomial name | |
| Mitrephora polypyrena | |
| Synonyms | |
|
Kinginda macrantha (Hassk.) Kuntze | |
Mitrephora polypyrena is a species of plant in the family Annonaceae. It is native to Java, the Lesser Sunda Islands, and Myanmar.[1]
Description
It is a tree reaching 20 meters in height. Its leathery leaves are 8-22.5 by 3.5-9 centimeters and come to a point at their tips. The leaves are smooth and shiny on their upper surfaces, while their undersides are slightly hairy. Its petioles are 4.5-11 millimeters long. Its flowers are arranged in groups of 3 or fewer on a rachis. Each flower is on a fleshy, slightly hairy pedicel 20-40 millimeters long. Its flowers have 3, oval-shaped sepals that are 5-7.5 by 5.5-7.5 millimeters. The outside of the sepals are densely hairy, while their inner surfaces are smooth. Its 6 petals are arranged in two rows of 3. The yellow, oval-shaped outer petals are 24-36 by 18-28 millimeters and come to a point at their tip. The outside surface of the outer petals are densely hairy, while their inner surface is slightly hairy. The inner petals are white with reddish-purple highlights and 17-22 by 9.5-16 millimeters. The outside surface of the inner petals is densely hairy while the tip of the inner surface has long hairs.[2][3]
Reproductive biology
The pollen of M. polypyrena is shed as permanent tetrads.[4]
References
- ^ "Mitrephora polypyrena (Blume) Zoll". Plants of the World Online. The Trustees of the Royal Botanic Gardens, Kew. n.d. Retrieved March 26, 2019.
- ^ Zollinger, H. (1858). "Ueber die Anonaceen des Ostindischen Archipels" [About the Anonaceae of the East Indian Archipelago]. Linnaea : Ein Journal für die Botanik in ihrem ganzen Umfange (in German and Latin). 29: 297–325.
- ^ Weerasooriya, Aruna D.; Saunders, Richard M. K. (2010). "Monograph of Mitrephora (Annonaceae)". Systematic Botany Monographs. 90: 1–167. JSTOR 41059228.
- ^ Walker, James W. (1971). "Pollen Morphology, Phytogeography, and Phylogeny of the Annonaceae". Contributions from the Gray Herbarium of Harvard University. 202 (202): 1–130. JSTOR 41764703.
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