''Pseudoxandra polyphleba'' is a species of plant in the family Annonaceae. It is native to

Bolivia , image_flag = Bandera de Bolivia (Estado).svg , flag_alt = Horizontal tricolor (red, yellow, and green from top to bottom) with the coat of arms of Bolivia in the center , flag_alt2 = 7 × 7 square p ...

, Brazil,

Colombia Colombia (, ; ), officially the Republic of Colombia, is a country in South America with insular regions in North America—near Nicaragua's Caribbean coast—as well as in the Pacific Ocean. The Colombian mainland is bordered by the Car ...

, French Guiana,

Guyana Guyana ( or ), officially the Cooperative Republic of Guyana, is a country on the northern mainland of South America. Guyana is an indigenous word which means "Land of Many Waters". The capital city is Georgetown. Guyana is bordered by the ...

, and Peru. Ludwig Diels, the German botanist who first formally described the species using the

basionym In the scientific name of organisms, basionym or basyonym means the original name on which a new name is based; the author citation of the new name should include the authors of the basionym in parentheses. The term "basionym" is used in both botan ...

''Unonopsis polyphleba'', named it after the distinctive veins (Latinized form of Greek , phléba) in its leaves.

Description

It is a tree reaching 4 to 15 meters in height. Its dull papery leaves are 10-19 by 3-6 centimeters and come to a point at their tips. The leaves are hairless on their upper and lower surfaces, but can have small warty bumps. The leaves have 10-15 distinct, straight secondary veins emanating from the primary vein. Its petioles are 2-7 millimeters long. Its flowers are solitary or in pairs and axillary. Each flower is on a

pedicel Pedicle or pedicel may refer to: Human anatomy *Pedicle of vertebral arch, the segment between the transverse process and the vertebral body, and is often used as a radiographic marker and entry point in vertebroplasty and kyphoplasty procedures ...

2-5 millimeters long. Its flowers have 3 oval-shaped

sepals A sepal () is a part of the flower of angiosperms (flowering plants). Usually green, sepals typically function as protection for the flower in bud, and often as support for the petals when in bloom., p. 106 The term ''sepalum'' was coined b ...

that are 1-2 by 2-3 millimeters. The outer surface of the sepals is hairless or slightly hairy. Its 6 petals are arranged in two rows of 3. The outer petals are white to yellow and 4-10 by 3-5 millimeters. The outer petals are hairless on their outer surface. The inner petals are similarly colored and 3-8 by 3-5 millimeters. The inner petals are smooth on their outer surface. It has numerous stamens that are 1.5-1.7 millimeters long. Each flower has 2-20 monocarps that are yellow, red, or near black at maturity and 10-15 millimeters wide. Its brown seeds are 8-13 by 7-12 millimeters.

Reproductive biology

The pollen of ''P. polyphleba'' is shed as permanent tetrads.

References

External links

* Flora of Bolivia Flora of Brazil Flora of Colombia Flora of French Guiana Flora of Guyana Flora of Peru Plants described in 1937 polyphleba Taxa named by Robert Elias Fries {{annonaceae-stub