Greyia
Encyclopedia
Greyia is a genus of plant
in family Melianthaceae
. It contains three species:
Unlike other members of the Melianthaceae
, Greyia has simple (undivided) leaves
, flowers with ten stamen
s, and ovaries
with parietal placentation
. Because of this, the genus has sometimes been placed in a separate family Greyiaceae, but under the APG II system
of classification, it is included in the Melianthaceae.
Plant
Plants are living organisms belonging to the kingdom Plantae. Precise definitions of the kingdom vary, but as the term is used here, plants include familiar organisms such as trees, flowers, herbs, bushes, grasses, vines, ferns, mosses, and green algae. The group is also called green plants or...
in family Melianthaceae
Melianthaceae
The Melianthaceae is a family of flowering plants. The APG II system includes them within the rosid clade. All members of the Melianthaceae proper are trees or shrubs found in tropical and southern Africa...
. It contains three species:
- Greyia flanaganiiGreyia flanaganiiGreyia flanaganii is a species of plant in the Melianthaceae family. It is endemic to South Africa.-Source:* Hilton-Taylor, C. et al. 1998. . Downloaded on 21 August 2007....
, Bolus - Greyia radlkoferiGreyia radlkoferiGreyia radlkoferi is a shrub or small tree, native to South Africa. It grows up to 5 metres in height and has smooth yellowish bark, becoming grey and deeply furrowed as it matures...
- Greyia sutherlandiiGreyia sutherlandiiGreyia sutherlandii, also known as Natal bottlebrush, is a species of plant in the Melianthaceae family. It is endemic to South Africa.-External links:*http://www.plantzafrica.com/plantefg/greyiasuther.htm...
Unlike other members of the Melianthaceae
Melianthaceae
The Melianthaceae is a family of flowering plants. The APG II system includes them within the rosid clade. All members of the Melianthaceae proper are trees or shrubs found in tropical and southern Africa...
, Greyia has simple (undivided) leaves
Leaf
A leaf is an organ of a vascular plant, as defined in botanical terms, and in particular in plant morphology. Foliage is a mass noun that refers to leaves as a feature of plants....
, flowers with ten stamen
Stamen
The stamen is the pollen producing reproductive organ of a flower...
s, and ovaries
Ovary (plants)
In the flowering plants, an ovary is a part of the female reproductive organ of the flower or gynoecium. Specifically, it is the part of the pistil which holds the ovule and is located above or below or at the point of connection with the base of the petals and sepals...
with parietal placentation
Placentation
In biology, placentation refers to the formation, type and structure, or arrangement of placentas. The function of placentation is to transfer nutrients from maternal tissue to a growing embryo...
. Because of this, the genus has sometimes been placed in a separate family Greyiaceae, but under the APG II system
APG II system
The APG II system of plant classification is the second, now obsolete, version of a modern, mostly molecular-based, system of plant taxonomy that was published in April 2003 by the Angiosperm Phylogeny Group. It was a revision of the first APG system, published in 1998, and was superseded in 2009...
of classification, it is included in the Melianthaceae.