Mitrephora weberi

Mitrephora weberi
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Clade:	Angiosperms
Clade:	Magnoliids
Order:	Magnoliales
Family:	Annonaceae
Genus:	Mitrephora
Species:	M. weberi
Binomial name
	Mitrephora weberi; Merr.

Mitrephora weberi is a species of plant in the family Annonaceae. It is native to The Philippines.[1] Elmer Drew Merrill, an American botanist, first formally described the species and named it after Charles Martin Weber who collected the specimen that Merrill examined.[2]

Description

Mitrephora weberi is a tree that can reach 8 meters in height. Its branches have lenticels. Its slightly leathery leaves are 10-18 by 4-8 centimeters. The leaves are smooth and shiny green on both surfaces. Its petioles are 7-10 millimeters long. Its flowers are yellow with purple highlights. Its flowers have 3, oval-shaped sepals, 6 millimeters long, that come to a point at their tip. Its 6 petals are arranged in two rows of 3. The outer petals are 20 by 8 millimeters, hairy on their outer surface and smooth inside. The inner petals are 14 millimeters long and densely hairy on their inner surface. Its stamens are 1–1.2 millimeters long. Each flower has 12-15 ovaries that are smooth and 1–1.2 millimeters long. Each ovary has about 12 ovules.[3]

Reproductive biology

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

References

"Mitrephora weberi Merr". Plants of the World Online. The Trustees of the Royal Botanic Gardens, Kew. n.d. Retrieved April 3, 2019.
"Letter from C.M.[Charles Martin] Weber to Sir David Prain; from Butuan, Agusa [Agusan], Mindanao, [Philippines]; 6 June 1911; two page letter comprising two images; folios 389 - 390". Global Plants. ITHAKA. n.d. Retrieved April 3, 2019.
Merrill, E.D. (1912). "New or Noteworthy Philippine Plants, IX". The Philippine Journal of Science. 7 (5): 259–357.
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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[1] "Mitrephora weberi Merr". Plants of the World Online. The Trustees of the Royal Botanic Gardens, Kew. n.d. Retrieved April 3, 2019.

[2] "Letter from C.M.[Charles Martin] Weber to Sir David Prain; from Butuan, Agusa [Agusan], Mindanao, [Philippines]; 6 June 1911; two page letter comprising two images; folios 389 - 390". Global Plants. ITHAKA. n.d. Retrieved April 3, 2019.

[3] Merrill, E.D. (1912). "New or Noteworthy Philippine Plants, IX". The Philippine Journal of Science. 7 (5): 259–357.

[4] 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.