| 词条 | Mitrephora polypyrena |
| 释义 |
|genus = Mitrephora |species = polypyrena |authority = (Blume) Zoll. |synonyms = Kinginda macrantha (Hassk.) Kuntze Kinginda polypyrena Kuntze Mitrephora javanica Backer Mitrephora macrantha Hassk. Uvaria polyprena Blume }}Mitrephora polypyrena is a species of plant in the family Annonaceae. It is native to Java, the Lesser Sunda Islands, and Myanmar.[1] DescriptionIt 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 biologyThe pollen of M. polypyrena is shed as permanent tetrads.[4] References1. ^{{cite web |url= http://www.plantsoftheworldonline.org/taxon/urn:lsid:ipni.org:names:74035-1 |title= Mitrephora polypyrena (Blume) Zoll.|author= |date=n.d. |website=Plants of the World Online |publisher=The Trustees of the Royal Botanic Gardens, Kew |access-date=March 26, 2019}} {{Taxonbar}}{{annonaceae-stub}}2. ^{{cite journal |last=Zollinger |first=H. |date=1858 |title=Ueber die Anonaceen des Ostindischen Archipels |trans-title=About the Anonaceae of the East Indian Archipelago |url=https://www.biodiversitylibrary.org/item/10873 |language=German and Latin |journal= Linnaea : Ein Journal für die Botanik in ihrem ganzen Umfange |volume=29|pages=297-325 }} 3. ^{{cite journal |last1= Weerasooriya |first1=Aruna D. |last2=Saunders |first2=Richard M. K. |date=2010 |title=Monograph of Mitrephora (Annonaceae) |journal= Systematic Botany Monographs |volume=90 |page=1-167 |jstor=41059228}} 4. ^{{cite journal |last=Walker |first=James W. |date=1971 |title=Pollen Morphology, Phytogeography, and Phylogeny of the Annonaceae |journal=Contributions from the Gray Herbarium of Harvard University |volume=202 |issue=202 |pages=1–130|jstor=41764703 }} 5 : Mitrephora|Flora of Java|Flora of the Lesser Sunda Islands|Flora of Myanmar|Plants described in 1858 |
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