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Key to Heliotropiaceae

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Show caption*© Douglas Goldman, some rights reserved (CC BY-SA), uploaded by Douglas Goldman
1 Plant a woody vine; corolla lobes subulate
image of plant
Show caption*© Alan Cressler: Argusia gnaphalodes, Garden Key, Dry Tortugas National Park, Gulf of Mexico, Monroe County, Florida 1 by Alan Cressler
1 Plant an herb or shrub; corolla lobes rounded.
image of plant
Show caption*© Bruce A. Sorrie
image of plant
Show caption*© Bob Miller, some rights reserved (CC BY), uploaded by Bob Miller
  2 Plant a shrub; leaves spatulate, densely silky tomentose
  2 Plant an herb or shrub; leaves various but not as above.
    3 Stigmatic apex pubescent; anthers apically coherent; calyx lobed 1/3-1/2 to base; embryo curved
    3 Stigmatic apex glabrous; anthers rarely coherent apically; calyx lobed > 3/4 to base; embryo straight