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 (fascicle (botany), 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 achenes.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 phylogenetics, Molecular phylogenetic 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 (plant), Duma'' and ''Polygonum'', forming the so-called "DAP clade".Species
, Plants of the World Online accepted 41 species: *''Atraphaxis angustifolia'' Jaub. & Spach *''Atraphaxis ariana'' (Grigorj.) T.M.Schust. & Reveal *''Atraphaxis arida'' (Boiss. & Hausskn.) S.Tavakkoli & Kaz.Osaloo *''Atraphaxis atraphaxiformis'' (Botsch.) Tanja Schuster, 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'' (Lovelius) Lovelius *''Atraphaxis decipiens'' Jaub. & Spach *''Atraphaxis dumosa'' (Boiss.) S.Tavakkoli & Kaz.Osaloo *''Atraphaxis frutescens'' (L.) K.Koch *''Atraphaxis grandiflora'' Willd. *''Atraphaxis intricata'' Mozaff. *''Atraphaxis irtyschensis'' Chang Y.Yang & Y.L.Han *''Atraphaxis kamelinii'' Yurtseva *''Atraphaxis karataviensis'' Pavlov & Lipsch. *''Atraphaxis kermanica'' S.Tavakkoli & Kaz.Osaloo *''Atraphaxis khajeh-jamali'' (Khosravi & Poormahdi) S.Tavakkoli & Kaz.Osaloo *''Atraphaxis kopetdagensis'' Kovalevsk. *''Atraphaxis laetevirens'' (Ledeb.) Jaub. & Spach *''Atraphaxis macrocarpa'' Rech.f. & Schiman-Czeika *''Atraphaxis manshurica'' Kitag. *''Atraphaxis muschketowii'' Krasn. *''Atraphaxis popovii'' (Borodina) Yurtseva *''Atraphaxis pungens'' (M.Bieb.) Jaub. & Spach *''Atraphaxis pyrifolia'' Bunge *''Atraphaxis radkanensis'' S.Tavakkoli, Kaz.Osaloo & Mozaff. *''Atraphaxis rodinii'' Botsch. *''Atraphaxis salicornioides'' (Jaub. & Spach) S.Tavakkoli & Kaz.Osaloo *''Atraphaxis seravschanica'' Pavlov *''Atraphaxis spinosa'' L. *''Atraphaxis suaedifolia'' Jaub. & Spach *''Atraphaxis teretifolia'' (Popov) Kom. *''Atraphaxis toktogulica'' (Lazkov) T.M.Schust. & RevealReferences
{{Taxonbar, from=Q889292 Polygonoideae Polygonaceae genera