''Metaplexis'' is a genus 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 ...

s in the family

Apocynaceae Apocynaceae (from ''Apocynum'', Greek for "dog-away") is a family of flowering plants that includes trees, shrubs, herbs, stem succulents, and vines, commonly known as the dogbane family, because some taxa were used as dog poison Members of the ...

, first described as a genus in 1810. As presently conceived, it contains two known species, both native to east

Asia Asia (, ) is one of the world's most notable geographical regions, which is either considered a continent in its own right or a subcontinent of Eurasia, which shares the continental landmass of Afro-Eurasia with Africa. Asia covers an area ...

.Flora of China Vol. 16 Page 204 萝藦属 luo mo shu ''Metaplexis'' R. Brown, Mem. Wern. Nat. Hist. Soc. 1: 48. 1810.
/ref>

Description

''Metaplexis'' plants are

vine A vine (Latin ''vīnea'' "grapevine", "vineyard", from ''vīnum'' "wine") is any plant with a growth habit of trailing or scandent (that is, climbing) stems, lianas or runners. The word ''vine'' can also refer to such stems or runners themselv ...

s that reach 8 m high; are

rhizomatous 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 ...

and have underground woody organs that constitute a pattern. Leaf-blades are

herbaceous Herbaceous plants are vascular plants that have no persistent woody stems above ground. This broad category of plants includes many perennials, and nearly all annuals and biennials. Definitions of "herb" and "herbaceous" The fourth edition of t ...

, about 5–10 cm long and 4.6 cm wide,

ovate Ovate may refer to: *Ovate (egg-shaped) leaves, tepals, or other botanical parts *Ovate, a type of prehistoric stone hand axe *Ovates, one of three ranks of membership in the Welsh Gorsedd *Vates In modern English, the nouns vates () and ovat ...

, basally cordate, acute apex attenuated, adaxial

glabrous Glabrousness (from the Latin ''glaber'' meaning "bald", "hairless", "shaved", "smooth") is the technical term for a lack of hair, down, setae, trichomes or other such covering. A glabrous surface may be a natural characteristic of all or part of ...

and are abaxially sparsely pubescent. The

inflorescence An inflorescence is a group or cluster of flowers arranged on a stem that is composed of a main branch or a complicated arrangement of branches. Morphologically, it is the modified part of the shoot of seed plants where flowers are formed o ...

s are extra-axillary, solitary, almost as long as the adjacent leaves. The plants have 6-20 flowers, simple, with the peduncle longer than the

pedicel Pedicle or pedicel may refer to: Human anatomy *Pedicle of vertebral arch, the segment between the transverse process and the vertebral body, and is often used as a radiographic marker and entry point in vertebroplasty and kyphoplasty procedures ...

s which are practically obsolete and slightly pubescent on the whole surface. ;SpeciesThe Plant List, ''Metaplexis''
/ref> # '' Metaplexis hemsleyana''

Oliv. Daniel Oliver, FRS (6 February 1830, Newcastle upon Tyne – 21 December 1916) was an English botanist. He was Librarian of the Herbarium, Royal Botanic Gardens, Kew from 1860–1890 and Keeper there from 1864–1890, and Professor of Botany at ...

- China (Guangxi, Guizhou, Hubei, Hunan, Jiangxi, Shaanxi, Sichuan, Yunnan) # '' Metaplexis japonica''

Makino History Makino was established in 1937 by Tsunezo Makino in Japan, developing Japan's first numerical control, numerically controlled (NC) milling machine in 1958 and Japan's first milling machine, machining centre in 1966. The North America ...

- widespread across much of China; also Korea, Japan, Russian Far East ;formerly included # ''Metaplexis cavaleriei'', syn of ''

Marsdenia cavaleriei ''Marsdenia'' is a genus of plants in the family Apocynaceae first described as a genus in 1810. It is named in honor of the plant collector and Secretary of the Admiralty, William Marsden. The plants are native to tropical regions in Asia, Afri ...

'' # ''Metaplexis fimbriata'', syn of '' Matelea cumanensis''

References

{{Taxonbar, from=Q11692226 Asclepiadoideae Flora of China Flora of Eastern Asia Flora of the Russian Far East Apocynaceae genera