''Mitrephora samarensis'' is a species of
plant in the family
Annonaceae. It is native to the
Philippines.
Elmer Drew Merrill, the American botanist who first formally described the species, named it after
Samar, the third largest island in the Philippines, where the sample he examined was collected.
Description
It is a tree reaching 12–12 meters in height. Its leaves are 6-10 by 2-4 centimeters and come to a point at their tips. The leaves are smooth and shiny on both surfaces. Its
petioles are 5 millimeters long. Its flowers are arranged in groups of 1-2 or fewer on a
rachis. Each flower is on a fleshy, densely hairy
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
...
1–1.5 centimeters long. Its flowers have 3, leathery, 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 ...
. Its 6 petals are arranged in two rows of 3. The outer petals are 6 by 11 millimeters. They are yellow and orange with red highlights and have wavy margins. Their outer surface is hairy, while their inner surface is smooth. The inner petals are 12 millimeters long. Its
stamens are 1 millimeter long. Each flower has as many as 12
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 millimeter long and hairy. Each carpel has about 4
ovules
In seed plants, the ovule is the structure that gives rise to and contains the female reproductive cells. It consists of three parts: the ''integument'', forming its outer layer, the ''nucellus'' (or remnant of the megasporangium), and the fe ...
.
Reproductive biology
The pollen of ''M. samarensis'' is shed as permanent tetrads.
References
samarensis
Flora of the Philippines
Plants described in 1915
Taxa named by Elmer Drew Merrill
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