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Iliamna rivularis (Streambank wild hollyhock)
Beckers, Eric

Iliamna rivularis

Iliamna rivularis (Douglas ex Hook.) Greene

Streambank Wild Hollyhock, Wild Hollyhock, Mountain Globemallow

Malvaceae (Mallow Family)



USDA Native Status: L48 (N), CAN (N)

This perennial may reach 6 ft., but 1 1/2 - 3 ft. is usual in drier locations. Showy, pink, rose-purple or nearly white flowers are borne from upper leaf axils forming an erect, terminal raceme. Large leaves are broadly heart-shaped with triangular lobes.


From the Image Gallery

12 photo(s) available in the Image Gallery

Plant Characteristics

Duration: Perennial
Habit: Herb
Leaf Arrangement: Alternate
Leaf Complexity: Simple
Breeding System: Flowers Bisexual
Fruit Type: Schizocarp
Size Notes: Up to about 6 feet tall.
Leaf: Green

Bloom Information

Bloom Color: White , Pink , Purple
Bloom Time: Jun , Jul , Aug


USA: CO , ID , IL , IN , MT , NV , OR , UT , VA , WA , WY
Canada: AB
Native Distribution: E. of the Cascade Mts. from B.C. to OR, e. to Alt. & CO
Native Habitat: Stream banks; mountain meadows

Growing Conditions

Water Use: Medium
Light Requirement: Part Shade
Soil Moisture: Moist
CaCO3 Tolerance: Low
Soil Description: Moist, rich soil.


Conspicuous Flowers: yes

Find Seed or Plants

Find seed sources for this species at the Native Seed Network.

View propagation protocol from Native Plants Network.

National Wetland Indicator Status

Status: FACW FAC
This information is derived from the U.S. Army Corps of Engineers National Wetland Plant List, Version 3.1 (Lichvar, R.W. 2013. The National Wetland Plant List: 2013 wetland ratings. Phytoneuron 2013-49: 1-241). Click here for map of regions.

From the National Organizations Directory

According to the species list provided by Affiliate Organizations, this plant is on display at the following locations:

Native Seed Network - Corvallis, OR


Bibref 841 - Native Alternatives to Invasive Plants (2006) Burrell, C. C.

Search More Titles in Bibliography

Web Reference

Webref 38 - Flora of North America (2019) Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.
Webref 23 - Southwest Environmental Information Network (2009) SEINet - Arizona Chapter

Additional resources

USDA: Find Iliamna rivularis in USDA Plants
FNA: Find Iliamna rivularis in the Flora of North America (if available)
Google: Search Google for Iliamna rivularis


Record Modified: 2023-02-14
Research By: TWC Staff

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