Aspidistra Umbrosa
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''Aspidistra umbrosa'' is a species 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 ...
. Given it was described from an unclassified ''Aspidistra'' specimen from another study, neither its distribution nor habitat are known.


Description

This species is a
perennial A perennial plant or simply perennial is a plant that lives more than two years. The term ('' per-'' + '' -ennial'', "through the years") is often used to differentiate a plant from shorter-lived annuals and biennials. The term is also wide ...
herb. Its
rhizome In botany and dendrology, a rhizome (; , ) is a modified subterranean plant stem that sends out roots and shoots from its nodes. Rhizomes are also called creeping rootstalks or just rootstalks. Rhizomes develop from axillary buds and grow hori ...
is creeping, and measures in diameter. Its leaves are apart, its strong petiole measuring about ; the lamina is obovate and acuminate, measuring about . Its
peduncle Peduncle may refer to: *Peduncle (botany), a stalk supporting an inflorescence, which is the part of the shoot of seed plants where flowers are formed *Peduncle (anatomy), a stem, through which a mass of tissue is attached to a body **Peduncle (art ...
measures long; its perigone is campanulate and purple, measuring long and in diameter, possessing 6 lobes, each with 2
keel The keel is the bottom-most longitudinal structural element on a vessel. On some sailboats, it may have a hydrodynamic and counterbalancing purpose, as well. As the laying down of the keel is the initial step in the construction of a ship, in Br ...
s. It counts with 6
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, while its
anthers 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 ...
are
subsessile In botany, sessility (meaning "sitting", used in the sense of "resting on the surface") is a characteristic of plant parts (such as flowers and leaves) that have no stalk. Plant parts can also be described as subsessile, that is, not completely ...
and linear, and measures ; the
pistil Gynoecium (; ) is most commonly used as a collective term for the parts of a flower that produce ovules and ultimately develop into the fruit and seeds. The gynoecium is the innermost whorl of a flower; it consists of (one or more) ''pistils'' ...
is thin and long, while the ovar is inconspicuous. Its style distally widens towards the smooth stigma, which measures in diameter.


References


Further reading

*Tillich, H‐J. "An updated and improved determination key for Aspidistra Ker‐Gawl.(Ruscaceae, Monocotyledons)." Feddes Repertorium 119.5‐6 (2008): 449–462. *Tillich, Hans-Juergen. "The genus Aspidistra Ker-Gawl.(Asparagaceae) in Vietnam." Taiwania 59.1 (2014): 1–8. umbrosa Flora of Vietnam Plants described in 2007 {{Asparagaceae-stub