Stewartia Malacodendron
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''Stewartia malacodendron'', the silky camellia, silky stewartia or Virginia stewartia, is a
species In biology, a species is the basic unit of classification and a taxonomic rank of an organism, as well as a unit of biodiversity. A species is often defined as the largest group of organisms in which any two individuals of the appropriate s ...
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 ...
in the
family Family (from la, familia) is a Social group, group of people related either by consanguinity (by recognized birth) or Affinity (law), affinity (by marriage or other relationship). The purpose of the family is to maintain the well-being of its ...
Theaceae. It grows slowly into a large
deciduous In the fields of horticulture and Botany, the term ''deciduous'' () means "falling off at maturity" and "tending to fall off", in reference to trees and shrubs that seasonally shed leaves, usually in the autumn; to the shedding of petals, aft ...
shrub A shrub (often also called a bush) is a small-to-medium-sized perennial woody plant. Unlike herbaceous plants, shrubs have persistent woody stems above the ground. Shrubs can be either deciduous or evergreen. They are distinguished from trees ...
or small
tree In botany, a tree is a perennial plant with an elongated stem, or trunk, usually supporting branches and leaves. In some usages, the definition of a tree may be narrower, including only woody plants with secondary growth, plants that are ...
, typically tall, but sometimes as tall as . It is
native Native may refer to: People * Jus soli, citizenship by right of birth * Indigenous peoples, peoples with a set of specific rights based on their historical ties to a particular territory ** Native Americans (disambiguation) In arts and entert ...
to the southeastern United States. 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 ...
''malacodendron'' literally means "soft tree". Its common name "silky camellia" alludes to the appearance and texture of the flowers, which resemble those of the related camellias.


Description


Branches and leaves

''Stewartia malacodendron'' is an understory woodland species with rich brown
bark Bark may refer to: * Bark (botany), an outer layer of a woody plant such as a tree or stick * Bark (sound), a vocalization of some animals (which is commonly the dog) Places * Bark, Germany * Bark, Warmian-Masurian Voivodeship, Poland Arts, ...
. The young
stem Stem or STEM may refer to: Plant structures * Plant stem, a plant's aboveground axis, made of vascular tissue, off which leaves and flowers hang * Stipe (botany), a stalk to support some other structure * Stipe (mycology), the stem of a mushro ...
s are hairy. The
branch A branch, sometimes called a ramus in botany, is a woody structural member connected to the central trunk (botany), trunk of a tree (or sometimes a shrub). Large branches are known as boughs and small branches are known as twigs. The term '' ...
es tend to grow with a horizontal orientation from the main stem with the foliage produced on shorter stems branching off these horizontally oriented branches. The alternately arranged, dark green, simple leaves are long with finely toothed margins covered with fine hairs on the undersides, especially on the veins. The leaves are ovate to elliptical in shape with sharp pointed tips.


Buds and flowers

The buds are covered by two floral bracts with silvery hairs. The flowers are wide, showy, with five white petals. The
stamen 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 ...
s have purple filaments and blue
anther 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 filam ...
s that fill the middle of flat, cup shaped
corolla Corolla may refer to: *Corolla (botany), the petals of a flower, considered as a unit *Toyota Corolla, an automobile model name * Corolla (headgear), an ancient headdress in the form of a circlet or crown * ''Corolla'' (gastropod), a genus of moll ...
s. The flowers are born singly from the leaf axils on short stalks with two floral bracts (2–4 mm long) that remain after flowering. The flowers have five green
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 The term ''sepalum'' was coined b ...
s, 8–11 mm long and 5–9 mm wide. ''Stewartia malacodendron'' blooms in July and August in the northern part of its range and in April in the southern part of its range.


Seeds

Rounded, woody seed capsules are produced after flowering, each capsule with 4-5 chambers, and if fertilized, each chamber has 2-4 seeds. The shiny, wingless seeds are full, ovoid in shape and purplish to reddish-brown in color; each seed is 5–7 mm long and 4–6 mm wide.


Range and habitat

''Stewartia malacodendron'' is native to Texas, where it is rare, being found in a small area along Little Cow Creek near Burkeville, growing at the sides of streams, ravines and wooded bluffs in well draining soils. It is also found in scattered locations in the states of Arkansas, Georgia, Florida (panhandle region), Louisiana and southern Alabama and as far north as Virginia. This tree species is listed as
endangered An endangered species is a species that is very likely to become extinct in the near future, either worldwide or in a particular political jurisdiction. Endangered species may be at risk due to factors such as habitat loss, poaching and inva ...
in the US states of Arkansas and Florida.


Cultivation

Plants have a slow growth rate, are difficult to transplant and are a challenge to
propagate Propagation can refer to: *Chain propagation in a chemical reaction mechanism *Crack propagation, the growth of a crack during the fracture of materials *Propaganda, non-objective information used to further an agenda *Reproduction, and other forms ...
. They grow best in partial shade in well draining soils. ''Stewartia malacodendron'' has been cultivated in the United States since 1752. It is also grown in parks and gardens elsewhere in the
temperate In geography, the temperate climates of Earth occur in the middle latitudes (23.5° to 66.5° N/S of Equator), which span between the tropics and the polar regions of Earth. These zones generally have wider temperature ranges throughout t ...
regions of the world, and in the UK has gained the
Royal Horticultural Society The Royal Horticultural Society (RHS), founded in 1804 as the Horticultural Society of London, is the UK's leading gardening charity. The RHS promotes horticulture through its five gardens at Wisley (Surrey), Hyde Hall (Essex), Harlow Carr (Nort ...
's
Award of Garden Merit The Award of Garden Merit (AGM) is a long-established annual award for plants by the British Royal Horticultural Society (RHS). It is based on assessment of the plants' performance under UK growing conditions. History The Award of Garden Merit ...
.


References

{{Taxonbar, from=Q7615996 malacodendron Flora of Alabama Flora of the United States Plants described in 1753 Taxa named by Carl Linnaeus