Schaefferia
Encyclopedia
Schaefferia is a genus
of flowering
shrub
s and small tree
s in the staff vine
family, Celastraceae
. The generic name honours German mycologist and clergyman Jacob Christian Schäffer
(1718–1790). Members of the genus are found in the Neotropics. The plants are dioecious
, with flower
s that are unisexual
by abortion
. The flowers are usually clustered in the leaf axil, although they are solitary in some species. The calyx
of the flowers has four lobes, and the corolla consists of four petal
s. The ovary
consists of two locules; each locule has a single ovule
which develops into a single seed
. The fruit
is a drupe
.
's TROPICOS database lists the following species:
Genus
In biology, a genus is a low-level taxonomic rank used in the biological classification of living and fossil organisms, which is an example of definition by genus and differentia...
of flowering
Flowering plant
The flowering plants , also known as Angiospermae or Magnoliophyta, are the most diverse group of land plants. Angiosperms are seed-producing plants like the gymnosperms and can be distinguished from the gymnosperms by a series of synapomorphies...
shrub
Shrub
A shrub or bush is distinguished from a tree by its multiple stems and shorter height, usually under 5–6 m tall. A large number of plants may become either shrubs or trees, depending on the growing conditions they experience...
s and small tree
Tree
A tree is a perennial woody plant. It is most often defined as a woody plant that has many secondary branches supported clear of the ground on a single main stem or trunk with clear apical dominance. A minimum height specification at maturity is cited by some authors, varying from 3 m to...
s in the staff vine
Staff vine
The staff vines, also known as staff trees or bittersweet, genus Celastrus, comprise about 30 species of shrubs and vines. They have a wide distribution in East Asia, Australasia, Africa and the Americas....
family, Celastraceae
Celastraceae
The Celastraceae , is a family of about 90-100 genera and 1,300 species of vines, shrubs and small trees, belonging to the order Celastrales...
. The generic name honours German mycologist and clergyman Jacob Christian Schäffer
Jacob Christian Schäffer
Jakob or Jacob Christian Gottlieb Schäffer or Schäffern was a German dean, professor, botanist, mycologist, entomologist, ornithologist and inventor.-Biography:...
(1718–1790). Members of the genus are found in the Neotropics. The plants are dioecious
Dioecious
Dioecy is the property of a group of biological organisms that have males and females, but not members that have organs of both sexes at the same time. I.e., those whose individual members can usually produce only one type of gamete; each individual organism is thus distinctly female or male...
, with flower
Flower
A flower, sometimes known as a bloom or blossom, is the reproductive structure found in flowering plants . The biological function of a flower is to effect reproduction, usually by providing a mechanism for the union of sperm with eggs...
s that are unisexual
Gonochorism
In biology, gonochorism or unisexualism describes sexually reproducing species in which individuals have just one of at least two distinct sexes. The term is most often used with animals . The sex of an individual may change during its lifetime, this can for example be found in parrotfish...
by abortion
Abortion
Abortion is defined as the termination of pregnancy by the removal or expulsion from the uterus of a fetus or embryo prior to viability. An abortion can occur spontaneously, in which case it is usually called a miscarriage, or it can be purposely induced...
. The flowers are usually clustered in the leaf axil, although they are solitary in some species. The calyx
Sepal
A sepal is a part of the flower of angiosperms . Collectively the sepals form the calyx, which is the outermost whorl of parts that form a flower. Usually green, sepals have the typical function of protecting the petals when the flower is in bud...
of the flowers has four lobes, and the corolla consists of four petal
Petal
Petals are modified leaves that surround the reproductive parts of flowers. They often are brightly colored or unusually shaped to attract pollinators. Together, all of the petals of a flower are called a corolla. Petals are usually accompanied by another set of special leaves called sepals lying...
s. The ovary
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...
consists of two locules; each locule has a single ovule
Ovule
Ovule means "small egg". 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 , and the megaspore-derived female gametophyte in its center...
which develops into a single seed
Seed
A seed is a small embryonic plant enclosed in a covering called the seed coat, usually with some stored food. It is the product of the ripened ovule of gymnosperm and angiosperm plants which occurs after fertilization and some growth within the mother plant...
. The fruit
Fruit
In broad terms, a fruit is a structure of a plant that contains its seeds.The term has different meanings dependent on context. In non-technical usage, such as food preparation, fruit normally means the fleshy seed-associated structures of certain plants that are sweet and edible in the raw state,...
is a drupe
Drupe
In botany, a drupe is a fruit in which an outer fleshy part surrounds a shell of hardened endocarp with a seed inside. These fruits develop from a single carpel, and mostly from flowers with superior ovaries...
.
Species
Acevedo-Rodríguez reports 16 species in the genus. Missouri Botanical GardenMissouri Botanical Garden
The Missouri Botanical Garden is a botanical garden located in St. Louis, Missouri. It is also known informally as Shaw's Garden for founder Henry Shaw, a botanist and philanthropist.-History:...
's TROPICOS database lists the following species:
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Paul Carpenter Standley Paul Carpenter Standley was an American botanist.Standley was born in Avalon, Missouri... Ludwig Eduard Theodor Loesener Ludwig Eduard Theodor Loesener was a German botanist.Collection of specimens in Europe: Amrum Islands , Alps, Black Forest, Bavaria, Tyrol, Rugen. Herbarium 14 Aquifoliaceae & cult. Ilex spp.-Abbreviation:... |
Formerly placed here
- Drypetes lateriflora (Sw.) Krug & Urb. (as S. lateriflora Sw.)