Mt. Rainier

Mt. Rainier Flora -- Epilobium glaberrimum -- (Glaucous Willow-herb)

photos by Susan McDougall


Epilobium glaberrimum

There are two subspecies of Glaucous Willow-herb at the Park. This is subspecies glaberrimum, the most common and the tallest, with branched stems that are as much as 30 inches in height. Most often found above 5,000 feet of elevation, here it grows alongside the Stevens Canyon road.

Location: Stevens Canyon, Mount Rainier National Park

Date: July 1, 2016

Author: Susan McDougall
Stevens Canyon, Mount Rainier National Park
GPS: 46.7746, 121.6972, 3936
Date: July 1, 2016
Epilobium glaberrimum

In this subspecies (glaberrimum) the leaves are more widely separated on the tall stems. The petals are less than half-an-inch long.

Location: Stevens Canyon, Mount Rainier National Park

Date: July 1, 2016

Author: Susan McDougall
Stevens Canyon, Mount Rainier National Park
GPS: 46.7746, 121.6972, 3936
Date: July 1, 2016
Epilobium glaberrimum

Clasping leaves overlap along the 15-inch stems of this more infrequent subspecies (fastigiatum). It grows on cliffs and sometimes along roadsides at middle elevations. The petals are very small.

Location: near Tipsoo Lake, Mount Rainier National Park

Date: July 22, 2014

Author: Susan McDougall
near Tipsoo Lake, Mount Rainier National Park
GPS: 46.8672, -121.5171
Date: July 22, 2014
Epilobium glaberrimum

The petals are very small in fastigiatum. Glaucous Willow-herb is a member of the Evening-Primrose Family (Onagraceae).

Location: Stevens Canyon, Mount Rainier National Park

Date: June 11, 2014

Author: Susan McDougall
Stevens Canyon, Mount Rainier National Park
GPS: 46.7691, -121.6769333
Date: June 11, 2014

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All images are the property of Susan McDougall.
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