The population declined by about 90% from the late 1970s through the early 1990s, particularly in the northern part of its range.

It is fairly common throughout a large part of its range.

Habitat loss is also a threat, at least in part of its range.

However, it is not commonly seen in at least parts of its range.

Two generations may occur each year at least in part of its range.

There are four or more generations per year in the southern part of their range.

Some are present throughout winter in all parts of their range.

Species is described as 'common' in at least parts of its range.

The plant is in decline through a large part of its range.

It may be quite common in parts of its range.