Mitrephora wangii
Scientific classification Edit this classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Magnoliids
Order: Magnoliales
Family: Annonaceae
Genus: Mitrephora
Species:
M. wangii
Binomial name
Mitrephora wangii

Mitrephora wangii is a species of plant in the family Annonaceae. It is native to China and Thailand.[2]

Description

It is a tree reaching 10 meters in height. Its young branches are densely covered in hairs. Its leathery, oblong to lance-shaped leaves are 10.5-27 by 3.5-8 centimeters. The leaves have tips that taper to a point and wedge-shaped bases. The leaves are hairless on their upper surfaces and sparsely covered in hair underneath. The leaves have 10-14 pairs of secondary veins emanating from their midribs. Its petioles are 6.5-11.5 millimeters and sparsely covered in hairs. Its inflorescences are organized as unbranched rachides. Each flower is born on a pedicel that is 1.2-1.7 centimeters long. Bracts on the pedicels are 1.5-2 by 1-1.5 millimeters. Its oval sepals are 3-3.5 by 3-4.5 millimeters. Its flowers have 6 petals in two rows of three. The yellow, oval outer petals are 1.6-2.3 by 1-1.9 centimeters with somewhat wavy margins when mature. The purplish inner petals are 1.1-1.9 by 0.6-1.3 centimeters. Its flowers have numerous yellow, hairless stamen that are 0.8-1 millimeter. Its flowers have up to 8-10 carpels that are 1.8-2 millimeters. The carpels have 6-8 ovules. Its oblong fruit are 2.4-3.8 by 1.4-2.6 centimeters. The fruit are sparsely covered in hair. The fruit are born on 0.9-1.3 centimeter stipes. The stipes are attached to 1-1.6 centimeter pedicels. The seeds are 9 by 6 millimeters.[3]

Reproductive biology

The pollen of M. wangii is shed as permanent tetrads.[4]

References

  1. ↑ China Plant Specialist Group (2004). "Mitrephora wangii". IUCN Red List of Threatened Species. 2004: e.T46410A11053151. doi:10.2305/IUCN.UK.2004.RLTS.T46410A11053151.en. Retrieved 16 November 2021.
  2. ↑ "Mitrephora wangii Hu". Plants of the World Online. The Trustees of the Royal Botanic Gardens, Kew. n.d. Retrieved December 21, 2020.
  3. ↑ Bingtao, Li; Weerasooriya, Aruna D.; Saunders, Richard M.K. (2011). "9. MITREPHORA J. D. Hooker & Thomson". In Wu, Z.Y.; Raven, P.H.; Hong, D.Y. (eds.). Flora of China. Vol. 19 (Cucurbitaceae through Valerianaceae, with Annonaceae and Berberidaceae). Science Press. ISBN 978-1935641049.
  4. ↑ Gan, Yangying; Liu, Yong; Xu, Fengxia (2015). "Pollen morphology of selected species from Annonaceae". Grana. 54 (4): 271–281. doi:10.1080/00173134.2015.1096302. ISSN 0017-3134. S2CID 85772193.


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