''Indorouchera'' is a

monotypic In biology, a monotypic taxon is a taxonomic group (taxon) that contains only one immediately subordinate taxon. A monotypic species is one that does not include subspecies or smaller, infraspecific taxa. In the case of genera, the term "unispec ...

genus of

flowering plant Flowering plants are plants that bear flowers and fruits, and form the clade Angiospermae (), commonly called angiosperms. The term "angiosperm" is derived from the Greek words ('container, vessel') and ('seed'), and refers to those plants th ...

s belonging to the family

Linaceae Linaceae is a family of flowering plants. The family is cosmopolitan, and includes about 250 species in 14 genera, classified into two subfamilies: the Linoideae and Hugonioideae (often recognized as a distinct family, the Hugoniaceae). Leaves of ...

. It only contains one species, ''Indorouchera contestiana'' (Pierre) Hallier f. Its native range is

Cambodia Cambodia (; also Kampuchea ; km, កម្ពុជា, UNGEGN: ), officially the Kingdom of Cambodia, is a country located in the southern portion of the Indochinese Peninsula in Southeast Asia, spanning an area of , bordered by Thailand t ...

Vietnam Vietnam or Viet Nam ( vi, Việt Nam, ), officially the Socialist Republic of Vietnam,., group="n" is a country in Southeast Asia, at the eastern edge of mainland Southeast Asia, with an area of and population of 96 million, making i ...

and

Borneo Borneo (; id, Kalimantan) is the third-largest island in the world and the largest in Asia. At the geographic centre of Maritime Southeast Asia, in relation to major Indonesian islands, it is located north of Java, west of Sulawesi, and eas ...

Description

liana A liana is a long- stemmed, woody vine that is rooted in the soil at ground level and uses trees, as well as other means of vertical support, to climb up to the canopy in search of direct sunlight. The word ''liana'' does not refer to a ta ...

that can grow up to long, or sometimes a shrub that can grow up to tall. It has leaves that are elliptic to ovate in shape and they are long and wide. The

stipules In botany, a stipule is an outgrowth typically borne on both sides (sometimes on just one side) of the base of a leafstalk (the petiole). Stipules are considered part of the anatomy of the leaf of a typical flowering plant, although in many speci ...

are liguliform (strap-shaped) to shallowly triangular in shape. They are entire to crenate and long and wide. The flowers are in 4-7 flowered fascicles (small or slender bundles). The

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 ...

are elliptic to ovate in shape. They are long and wide. The

stamens 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 ...

are 1.8-2.2 mm long and 2.5-3.5 mm wide. The

ovary The ovary is an organ in the female reproductive system that produces an ovum. When released, this travels down the fallopian tube into the uterus, where it may become fertilized by a sperm. There is an ovary () found on each side of the body. ...

is 3-loculed (has 3 chambers), rather smooth, cylindric to ovoid in shape and 0.8-1 mm long and 0.6-0.7 mm wide. It has 1 or 2 seeds which are ventrally attached (fixed to the belly or underneath). They are often asymmetric, semi-ovoid in shape and 2.5—2.1 mm long and 1.7-1.9 wide.

Taxonomy

The genus name of ''Indorouchera'' is in honour of

Jean-Antoine Roucher Jean-Antoine Roucher (February 22, 1745 - July 25, 1794), was a French poet. Roucher was born in Montpellier, the son of a tailor. His epithalamium on Louis XVI and Marie Antoinette won him the favour of Turgot, and a salt-tax collectorship. ...

(1745–1794), a French poet, the reason for the Latin

specific epithet In taxonomy, binomial nomenclature ("two-term naming system"), also called nomenclature ("two-name naming system") or binary nomenclature, is a formal system of naming species of living things by giving each a name composed of two parts, bot ...

of ''contestiana'' has not been published. Both genus and species were published in Beih. Bot. Centralbl. Vol.39 (Issue 2) on pages 49-50 in 1921.

Uses

The plant contains

saponin Saponins (Latin "sapon", soap + "-in", one of), also selectively referred to as triterpene glycosides, are bitter-tasting usually toxic plant-derived organic chemicals that have a foamy quality when agitated in water. They are widely distributed ...

-like constituents which are toxic. They are used to create poisons to place on arrow tips. The wood (of the stems) is tough, but not excessively hard, and will not split easily.

References

{{Taxonbar, from1=Q5915452, from2=Q17549985 Linaceae Malpighiales genera Plants described in 1921 Flora of Cambodia Flora of Vietnam Flora of Borneo