Atraphaxis is a genus of flowering plants in the family Polygonaceae with about 40 species.

Description

Species of ''Atraphaxis'' are much branched woody plants, forming shrubs or shrubby tufts. The current year's branchlets are herbaceous and bear the leaves and flowers. The leaves are simple and alternate, with very short stalks (almost sessile). The ochreas are membranous and usually two-veined, more-or-less joined at the base. The inflorescence is made up of several bundles ( fascicles) of one to three flowers. The flowers have persistent tepals, either arranged in a narrow tube with unequal lobes or bell-shaped with equal segments. The fruits are wingless

achene An achene (; ), also sometimes called akene and occasionally achenium or achenocarp, is a type of simple dry fruit produced by many species of flowering plants. Achenes are monocarpellate (formed from one carpel) and indehiscent (they do not ope ...

Taxonomy

The genus ''Atraphaxis'' was erected by Carl Linnaeus in 1753. As with many other genera in the family Polygonaceae, the boundaries between the genera have been unclear, and some or all species placed in other genera.

Molecular phylogenetic Molecular phylogenetics () is the branch of phylogeny that analyzes genetic, hereditary molecular differences, predominantly in DNA sequences, to gain information on an organism's evolutionary relationships. From these analyses, it is possible to ...

studies have shown that ''Atraphaxis'' forms a distinct clade. The genus is placed in the tribe Polygoneae of the subfamily Polygonoideae. Within the tribe, it is most closely related to the genera '' Duma'' and '' Polygonum'', forming the so-called "DAP clade".

Species

Plants of the World Online Plants of the World Online (POWO) is an online database published by the Royal Botanic Gardens, Kew. It was launched in March 2017 with the ultimate aim being "to enable users to access information on all the world's known seed-bearing plants by ...

accepted 41 species: *''

Atraphaxis angustifolia Atraphaxis is a genus of flowering plants in the family Polygonaceae with about 40 species. Description Species of ''Atraphaxis'' are much branched woody plants, forming shrubs or shrubby tufts. The current year's branchlets are herbaceous a ...

'' Jaub. & Spach *'' Atraphaxis ariana'' (Grigorj.) T.M.Schust. & Reveal *''

Atraphaxis arida Atraphaxis is a genus of flowering plants in the family Polygonaceae with about 40 species. Description Species of ''Atraphaxis'' are much branched woody plants, forming shrubs or shrubby tufts. The current year's branchlets are herbaceous and b ...

'' (Boiss. & Hausskn.) S.Tavakkoli & Kaz.Osaloo *''

Atraphaxis atraphaxiformis Atraphaxis is a genus of flowering plants in the family Polygonaceae with about 40 species. Description Species of ''Atraphaxis'' are much branched woody plants, forming shrubs or shrubby tufts. The current year's branchlets are herbaceous and b ...

'' (Botsch.) T.M.Schust. & Reveal *'' Atraphaxis aucheri'' Jaub. & Spach *'' Atraphaxis avenia'' Botsch. *'' Atraphaxis badghysi'' Kult. *'' Atraphaxis billardierei'' Jaub. & Spach *'' Atraphaxis binaludensis'' S.Tavakkoli, Mozaff. & Kaz.Osaloo *'' Atraphaxis botuliformis'' (Mozaff.) S.Tavakkoli & Mozaff. *'' Atraphaxis bracteata'' Losinsk. *'' Atraphaxis canescens'' Bunge *'' Atraphaxis caucasica'' (Hoffm.) Pavlov *'' Atraphaxis compacta'' Ledeb. *''

Atraphaxis daghestanica Atraphaxis is a genus of flowering plants in the family Polygonaceae with about 40 species. Description Species of ''Atraphaxis'' are much branched woody plants, forming shrubs or shrubby tufts. The current year's branchlets are herbaceous a ...

'' (Lovelius) Lovelius *''

Atraphaxis decipiens Atraphaxis is a genus of flowering plants in the family Polygonaceae with about 40 species. Description Species of ''Atraphaxis'' are much branched woody plants, forming shrubs or shrubby tufts. The current year's branchlets are herbaceous a ...

'' Jaub. & Spach *'' Atraphaxis dumosa'' (Boiss.) S.Tavakkoli & Kaz.Osaloo *''

Atraphaxis frutescens Atraphaxis is a genus of flowering plants in the family Polygonaceae with about 40 species. Description Species of ''Atraphaxis'' are much branched woody plants, forming shrubs or shrubby tufts. The current year's branchlets are herbaceous and b ...

'' (L.) K.Koch *''

Atraphaxis grandiflora Atraphaxis is a genus of flowering plants in the family Polygonaceae with about 40 species. Description Species of ''Atraphaxis'' are much branched woody plants, forming shrubs or shrubby tufts. The current year's branchlets are herbaceous and b ...

'' Willd. *'' Atraphaxis intricata'' Mozaff. *'' Atraphaxis irtyschensis'' Chang Y.Yang & Y.L.Han *''

Atraphaxis kamelinii Atraphaxis is a genus of flowering plants in the family Polygonaceae with about 40 species. Description Species of ''Atraphaxis'' are much branched woody plants, forming shrubs or shrubby tufts. The current year's branchlets are herbaceous a ...

'' Yurtseva *''

Atraphaxis karataviensis Atraphaxis is a genus of flowering plants in the family Polygonaceae with about 40 species. Description Species of ''Atraphaxis'' are much branched woody plants, forming shrubs or shrubby tufts. The current year's branchlets are herbaceous a ...

'' Pavlov & Lipsch. *''

Atraphaxis kermanica Atraphaxis is a genus of flowering plants in the family Polygonaceae with about 40 species. Description Species of ''Atraphaxis'' are much branched woody plants, forming shrubs or shrubby tufts. The current year's branchlets are herbaceous a ...

'' S.Tavakkoli & Kaz.Osaloo *'' Atraphaxis khajeh-jamali'' (Khosravi & Poormahdi) S.Tavakkoli & Kaz.Osaloo *''

Atraphaxis kopetdagensis Atraphaxis is a genus of flowering plants in the family Polygonaceae with about 40 species. Description Species of ''Atraphaxis'' are much branched woody plants, forming shrubs or shrubby tufts. The current year's branchlets are herbaceous and b ...

'' Kovalevsk. *''

Atraphaxis laetevirens Atraphaxis is a genus of flowering plants in the family Polygonaceae with about 40 species. Description Species of ''Atraphaxis'' are much branched woody plants, forming shrubs or shrubby tufts. The current year's branchlets are herbaceous and b ...

'' (Ledeb.) Jaub. & Spach *''

Atraphaxis macrocarpa Atraphaxis is a genus of flowering plants in the family Polygonaceae with about 40 species. Description Species of ''Atraphaxis'' are much branched woody plants, forming shrubs or shrubby tufts. The current year's branchlets are herbaceous and b ...

'' Rech.f. & Schiman-Czeika *'' Atraphaxis manshurica'' Kitag. *''

Atraphaxis muschketowii Atraphaxis is a genus of flowering plants in the family Polygonaceae with about 40 species. Description Species of ''Atraphaxis'' are much branched woody plants, forming shrubs or shrubby tufts. The current year's branchlets are herbaceous and b ...

'' Krasn. *''

Atraphaxis popovii Atraphaxis is a genus of flowering plants in the family Polygonaceae with about 40 species. Description Species of ''Atraphaxis'' are much branched woody plants, forming shrubs or shrubby tufts. The current year's branchlets are herbaceous and b ...

'' (Borodina) Yurtseva *''

Atraphaxis pungens Atraphaxis is a genus of flowering plants in the family Polygonaceae with about 40 species. Description Species of ''Atraphaxis'' are much branched woody plants, forming shrubs or shrubby tufts. The current year's branchlets are herbaceous and b ...

'' (M.Bieb.) Jaub. & Spach *'' Atraphaxis pyrifolia'' Bunge *''

Atraphaxis radkanensis Atraphaxis is a genus of flowering plants in the family Polygonaceae with about 40 species. Description Species of ''Atraphaxis'' are much branched woody plants, forming shrubs or shrubby tufts. The current year's branchlets are herbaceous and b ...

'' S.Tavakkoli, Kaz.Osaloo & Mozaff. *''

Atraphaxis rodinii Atraphaxis is a genus of flowering plants in the family Polygonaceae with about 40 species. Description Species of ''Atraphaxis'' are much branched woody plants, forming shrubs or shrubby tufts. The current year's branchlets are herbaceous a ...

'' Botsch. *'' Atraphaxis salicornioides'' (Jaub. & Spach) S.Tavakkoli & Kaz.Osaloo *''

Atraphaxis seravschanica Atraphaxis is a genus of flowering plants in the family Polygonaceae with about 40 species. Description Species of ''Atraphaxis'' are much branched woody plants, forming shrubs or shrubby tufts. The current year's branchlets are herbaceous and b ...

'' Pavlov *''

Atraphaxis spinosa Atraphaxis is a genus of flowering plants in the family Polygonaceae with about 40 species. Description Species of ''Atraphaxis'' are much branched woody plants, forming shrubs or shrubby tufts. The current year's branchlets are herbaceous and b ...

'' L. *'' Atraphaxis suaedifolia'' Jaub. & Spach *'' Atraphaxis teretifolia'' (Popov) Kom. *'' Atraphaxis toktogulica'' (Lazkov) T.M.Schust. & Reveal

References

{{Taxonbar, from=Q889292 Polygonoideae Polygonaceae genera