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Key to Oxybasis

Chenopodiaceae

Oxybasis

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1 Leaf blades lanceolate-oblong, the margins toothed, sinuous, or shallowly rounded-lobed; leaf undersurface densely white-farinose.
(c) Principe, Skyler - CC-BY
  2 Inflorescences lacking leafy bracts, at least terminally; leaves obtuse at apex; vertical seeds 0.6-0.9 mm long
(c) Zharkikh, Andrey - CC-BY-NC, permission granted to NCBG
  2 Inflorescences with leafy bracts throughout; leaves acute at apex; vertical seeds 0.9-1.1 mm long
1 Leaf blades triangular-rhombic, green beneath (though also farinose in O. macrosperma).
    3 Leaf blades glabrous beneath.
      4 Stamens 2-3; seeds vertical (or occasionally horizontal); leaves turning red at maturity; plant typically branched from the base
      4 Stamens 5; seeds all horizontal (or rarely a few vertical); leaves remaining green; plant strict or branching above