''Goniothalamus repevensis'' is a species of

plant Plants are the eukaryotes that form the Kingdom (biology), kingdom Plantae; they are predominantly Photosynthesis, photosynthetic. This means that they obtain their energy from sunlight, using chloroplasts derived from endosymbiosis with c ...

in the family

Annonaceae The Annonaceae are a Family (biology), family of flowering plants consisting of trees, shrubs, or rarely lianas commonly known as the custard apple family or soursop family. With 108 accepted genera and about 2400 known species, it is the largest ...

. It is native to

Cambodia Cambodia, officially the Kingdom of Cambodia, is a country in Southeast Asia on the Mainland Southeast Asia, Indochinese Peninsula. It is bordered by Thailand to the northwest, Laos to the north, and Vietnam to the east, and has a coastline ...

Laos Laos, officially the Lao People's Democratic Republic (LPDR), is the only landlocked country in Southeast Asia. It is bordered by Myanmar and China to the northwest, Vietnam to the east, Cambodia to the southeast, and Thailand to the west and ...

and

Thailand Thailand, officially the Kingdom of Thailand and historically known as Siam (the official name until 1939), is a country in Southeast Asia on the Mainland Southeast Asia, Indochinese Peninsula. With a population of almost 66 million, it spa ...

Achille Eugène Finet Achille Eugène Finet (1863, Argenteuil – 1913, París) was a French botanist best known for his study of orchids native to Japan and China. Within the family Orchidaceae, he was the binomial authority, taxonomic authority of the genera '' ...

and

François Gagnepain François Gagnepain (23 September 1866 – 25 January 1952) was a French botanist. The standard botanical author abbreviation Gagnep. is applied to plants described by Gagnepain. With Achille Eugène Finet, he named a number of species with ...

, the French botanists who first formally described the species, named it after Mt. Knang-Repeuh in Cambodia where

Jean Baptiste Louis Pierre Jean Baptiste Louis Pierre (23 October 1833 – 30 October 1905), also known as J. B. Louis Pierre, was a French Botany, botanist known for his Asian studies. Early life Pierre was born in Saint-André, Réunion, Saint-André, Réunion, and ...

collected the

lectotype In biology, a type is a particular specimen (or in some cases a group of specimens) of an organism to which the scientific name of that organism is formally associated. In other words, a type is an example that serves to anchor or centralizes ...

specimen they examined.

Description

It is a bush or small tree reaching 6–7 meters in height. Its black, slender branches have fine dark-red hairs when young, but later become hairless. Its oblong leaves are 3.5 by 13 centimeters with tips that come to a long tapering point and bases that taper to their connection to their petioles. Both surfaces of the leaves are hairless and their margins are wavy. Its leaves have thin secondary veins that arch and connect with one another near the leaf margins. Its hairless, wrinkled petioles are 6 millimeters long. Its solitary (rarely in pairs) are axillary and have a distinctive pink to dark-red color. The flowers are born on

pedicels In botany, a pedicel is a stem that attaches a single flower to the inflorescence In botany, an inflorescence is a group or cluster of flowers arranged on a plant's Plant stem, stem that is composed of a main branch or a system of branch ...

that are 3–5 millimeters long. Its flowers have 3

sepal 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 Etymology The term ''sepalum'' ...

s that are 2.5 to 3.5 millimeters long. Its 6 petals are arranged in two rows of 3. The exterior petals are lance-shaped. The upper parts of the interior petals are fused along their margins forming a semi-spherical arch. It has numerous

stamen The stamen (: stamina or stamens) is a part consisting of the male reproductive organs of a flower. Collectively, the stamens form the androecium., p. 10 Morphology and terminology A stamen typically consists of a stalk called the filament ...

with anthers that dehisce longitudinally and connective tissue extends above the anther lobes to form a thick flat top. Its

ovaries The ovary () is a gonad in the female reproductive system that produces ova; when released, an ovum travels through the fallopian tube/oviduct into the uterus. There is an ovary on the left and the right side of the body. The ovaries are endocr ...

are covered in coarse hairs. Its styles are attached to the side of the stigma forming a ventral suture. Its large, convex, elliptical stigmas with prominent papillae are characteristic for the species. Its fruit are 1–2.6 centimeters long.

Reproductive biology

The pollen of ''G. repevensis'' is shed as permanent tetrads.

Habitat and distribution

It has been observed growing in dry evergreen forests at elevations of 600–900 meters.

Uses

In Cambodia it is commonly called Vor Krovan and is reported to be used in cosmetics.

References

repevensis Flora of Cambodia Flora of Laos Flora of Thailand Plants described in 1906 Taxa named by François Gagnepain Taxa named by Achille Eugène Finet {{Annonaceae-stub