No key was found for the requested taxon, but its parent (Heliotropium) is keyed as shown below.

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 Heliotropiaceae

Heliotropiaceae

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1 Plant an herb or shrub; corolla lobes rounded.
  2 Plant a shrub; leaves spatulate, densely silky tomentose
  2 Plant an herb or shrub; leaves various but not as above.