Click the number at the start of a key lead to highlight both that lead and its corresponding lead. Click again to show only the two highlighted leads. Click a third time to return to the full key with the selected leads still highlighted.

Key to Chamaesaracha

Copy permalink to share

1 Leaves 4-10× as long as wide, glabrous or sparsely pubescent with short, white stellate hairs
1 Leaves 2-3× as long as wide, glabrous or densely pubescent, hairs various.
  2 Leaves glabrous or nearly so; [mainly Edwards Plateau of c. TX]
  2 Leaves variously pubescent; [more widespread in TX and OK and northwestwards, westwards, and southwards]
    3 Leaf blades pubescent with 2-many-branched, dendritic to stellate hairs; [nc. TX and sw. OK].
    3 Leaf blades pubescent with simple or 1-branched hairs, glandular hairs, or a mix of the two[collectively of nc. TX, c. TX, and s. TX northwestwards, westwards, and southwards].
      4 Mid-stem herbage densely pubescent with mix of glandular and eglandular hairs; leaf margins irregularly to deeply pinnately lobed, occasionally few-lobed
      4 Mid-stem herbage densely glandular-pubescent, eglandular hairs largely absent; leaf margins undulate or few-lobed