[Globe-mallows: The Genus Iliamna East of the Cascade Mountains of Oregon and Washington]
Streambank Globemallow, Streambank Globe-mallow, Streambank Wild Hollyhock, Mountain Hollyhock
Iliamna rivularis var. rivularis
Synonyms: Iliamna acerifolia, Iliamna corei, Iliamna remota, Iliamna rivularis, Phymosia remota, Sphaeralcea rivularis
The photo above shows a close-up of the inflorescence of mountain hollyhock
as seen along Hat Pt. Road about one mile downhill from Saddle Creek Campground in Hells Canyon National Recreation Area........July
photo at right shows mountain hollyhock as seen along lower Pike Creek at the
eastern base of the Steens Mt. in southeastern Oregon..........June 18, 2004.
Note that the flowers appear in clusters of 2-3 in an elongated, open inflorescence
at the terminus of the stems.
Also known as stream-bank globe mallow, mountain hollyhock is an attractive
perennial which is very suitable for the garden. Plants have several to many
stout, erect stems that are often branched and measure from 50-120 cm high.
The stems are covered with fine, minute, star-shaped hairs. The petiolate leaves
are on the stems and measure from 8-15 cm wide. The base of the leaf is deeply
heart-shaped and the margins are deeply 5-7 lobed, the lobes triangular with
acute tips (See photo below.). The margins of the lobes are also lined with
The inflorescence is an open raceme, with the main stem and pedicels covered
with fine, star-shaped hairs. Each flower is subtended by a bract which is especially
leaf-like below and reduced in size upwards, but always longer than the pedicel.
The calyx is 7-10 mm long and densely covered with star-shaped hairs. The lobes
of the calyx are wide with acute tips and are much longer than the narrowly
linear bractlets. The deep rose-purple to pale pink petals are 2-2.5 cm long.
Mountain hollyhock is often found along streams or on moist slopes in canyons
and in the foothills, although it may be found up to 7500 feet in elevation
in the mountains at the southern extent of its range.
Mountain hollyhock may be found east of the Cascade Mts. from
British Columbia south to Oregon and east to Montana and Colorado.
The photo at left shows mountain hollyhock as seen along Hat Pt. Road about one mile downhill from Saddle Creek Campground in Hells Canyon National Recreation Area.......July 11, 2007. The photos at center and right show mountain hollyhock as seen in the Renner Lake uplands northwest of Kettle Falls, Colville National Forest.......June 26, 2016.
Streambank globemallow as seen along the Teanaway Ridge Trail #1226 about three-quarters of a mile above its junction with the Iron Creek Trail #1351, Wenatchee National Forest.........July 9, 2010.
Images of mountain hollyhock as seen along the Crawford Lake Trail, Wallowa-Whitman National Forest.........July 26, 2013.
The photo at left shows a close-up of the calyx and corolla of mt.
hollyhock as seen at Pike Creek, Steens Mt.......June 18, 2004. The photo at right shows streambank globemallow as seen atop the Mount Pisgah ridgeline near East Point, Ochoco National Forest........July 14, 2017.
The photo above shows a close-up of the leaf
of mountain hollyhock. Photographed at Jackman Park on the Steens Mt., southeastern
Oregon.......June 26, 2000.