''Greyia'' is a genus 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 family

Francoaceae The Francoaceae are a small family of flowering plants in the order Geraniales, including the genera '' Francoa'', commonly known as bridal wreaths. The Francoaceae are recognized as a family under various classification schemes. Under the 2009 A ...

. It contains three species: * '' Greyia flanaganii'', Bolus * '' Greyia radlkoferi'' * '' Greyia sutherlandii'' Unlike other plants sometimes included in the family Melianthaceae, ''Greyia'' has simple (undivided)

leaves A leaf (: leaves) is a principal appendage of the stem of a vascular plant, usually borne laterally above ground and specialized for photosynthesis. Leaves are collectively called foliage, as in "autumn foliage", while the leaves, stem, ...

, flowers with ten

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 ...

s, and

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 ...

with parietal

placentation Placentation is the formation, type and structure, or modes of arrangement of the placenta. The function of placentation is to transfer nutrients, respiratory gases, and water from maternal tissue to a growing embryo, and in some instances to re ...

. Because of this, the genus has sometimes been placed in a separate family Greyiaceae, but under the

APG II system The APG II system (Angiosperm Phylogeny Group II system) of plant classification is the second, now obsolete, version of a modern, mostly Molecular phylogenetics, molecular-based, list of systems of plant taxonomy, system of plant taxonomy that ...

and

APG III system The APG III system of flowering plant classification is the third version of a modern, mostly molecular-based, system of plant taxonomy being developed by the Angiosperm Phylogeny Group (APG). Published in 2009, it was superseded in 2016 by a f ...

of classification, it was included in the

Melianthaceae The Francoaceae are a small family of flowering plants in the order Geraniales, including the genera '' Francoa'', commonly known as bridal wreaths. The Francoaceae are recognized as a family under various classification schemes. Under the 2009 ...

. Under the

APG IV system The APG IV system of flowering plant classification is the fourth version of a modern, mostly molecular-based, system of plant taxonomy for flowering plants (angiosperms) being developed by the Angiosperm Phylogeny Group (APG). It was publish ...

, it is included in the Francoaceae.

References

Geraniales genera Taxonomy articles created by Polbot Taxa named by William Henry Harvey Taxa named by William Jackson Hooker {{Geraniales-stub