Some plants occurring in Arizona may be included within this species.

This plant occurs in six areas, two of which contain fewer than five individuals.

Thus distinct species were erected for each country in which the plant occurred.

However, the areas in which the plant occurs are being developed, so the species's habitat is threatened.

The plant may occur on roadsides, an area of high disturbance.

Many rare plants, including several orchids, occur on the refuge.

It is another phenomenon that helps to explain how plants occur where they were not planted.

The plants occur in colonies of mother and daughter plants.

This threatened plant occurs in parts of central South America.

Uranium mining takes place nearby, but not in areas where the plant naturally occurs.