Fragmented populations occur in the western part of its range.

But altogether, the population is healthy and occurs over a large range.

One population of the plant also occurs in an area with potential for oil exploration activity.

The peak population of the 9th arrondissement occurred in 1901, when it had 124,011 inhabitants.

Both natural populations occur on private land, where they are difficult to protect.

A peak population of over 3,000 occurred during the 1950s through to the 1990s.

Peak population occurred in the 1970s when the population reached nearly 250.

The highest population of the 3rd to 7th centuries probably occurred in the Byzantine period.

It is possible that smaller, fragmented populations occur in other areas.

The only known population occurs at an elevation of 1000-1200 m above sea level.