''Mitrephora wangii'' is a species of plant in the family Annonaceae. It is native to

China China, officially the People's Republic of China (PRC), is a country in East Asia. It is the world's most populous country, with a population exceeding 1.4 billion, slightly ahead of India. China spans the equivalent of five time zones and ...

and Thailand.

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 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 ...

that is 1.2-1.7 centimeters long.

Bract In botany, a bract is a modified or specialized leaf, especially one associated with a reproductive structure such as a flower, inflorescence axis or cone scale. Bracts are usually different from foliage leaves. They may be smaller, larger, or of ...

s 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 The stamen (plural ''stamina'' or ''stamens'') is the pollen-producing reproductive organ of a flower. Collectively the stamens form the androecium., p. 10 Morphology and terminology A stamen typically consists of a stalk called the filame ...

that are 0.8-1 millimeter. Its flowers have up to 8-10

carpels Gynoecium (; ) is most commonly used as a collective term for the parts of a flower that produce ovules and ultimately develop into the fruit and seeds. The gynoecium is the innermost whorl of a flower; it consists of (one or more) ''pistils'' ...

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 In botany, a pedicel is a stem that attaches a single flower to the inflorescence. Such inflorescences are described as ''pedicellate''. Description Pedicel refers to a structure connecting a single flower to its inflorescence. In the absenc ...

. The seeds are 9 by 6 millimeters.

Reproductive biology

The pollen of ''M. wangii'' is shed as permanent tetrads.

References

Flora of China wangii Vulnerable plants Taxonomy articles created by Polbot Taxa named by Hu Xiansu {{Annonaceae-stub