Rattlesnake RootPrenanthes alba
White Rattlesnake-root is one of the few flowering plants seen in the woods towards the end of summer. It can also be found in smaller forms, typically with smaller, less variable leaves, in rock outcrops and on the rocky shore of Lake Superior. The flower shape is similar to other Prenanthes species, but P. alba is distinguished by its branching clusters of dangling white to pinkish flowers with hairless, purplish bracts, smooth stem and (typically) variable leaf shapes. In some references, P. alba is known by synonym Nabalus albus.
USDA symbol: PRAL2
General Information
| Plant Type | Forb |
|---|---|
| Height | 2 to 4 feet |
| Light Exposure | Sun |
| Soil Moisture | Dry |
| Bloom Color | White, Pink |
Tolerances
| Flooding / Inundation Tolerance | Low |
|---|---|
| General Resilience | 5 |
| Salt Tolerance | Medium |
Pollinator Value: High
| Bloom Months | August to September |
|---|---|
| Pollinator Benefit | Insect Pollinated, Provides Nectar |
Project Planning
| Project Type | Erosion Control, Restoration |
|---|---|
| Coefficient of Conservatism | 6 |
| Herbivore Sensitivity | Low |
| Lifespan | Perennial |
| Rate of Spread | Slow |
| Soil Stabilization | Shallow |
| Vegetative Reproduction | Absent |
Range
| County | Aitkin, Anoka, Becker, Beltrami, Benton, Blue Earth, Brown, Carlton, Carver, Cass, Chisago, Clay, Clearwater, Cook, Cottonwood, Crow Wing, Dakota, Dodge, Faribault, Fillmore, Freeborn, Goodhue, Grant, Hennepin, Houston, Hubbard, Itasca, Kandiyohi, Kittson, Koochiching, Lake, Lake of the Woods, Le Sueur, Lyon, Mahnomen, Marshall, Mille Lacs, Morrison, Mower, Nicollet, Norman, Olmsted, Otter Tail, Pine, Polk, Pope, Ramsey, Renville, Rice, Roseau, Sherburne, Sibley, St. Louis, Stearns, Steele, Todd, Wabasha, Wadena, Waseca, Washington, Wilkin, Winona, Wright |
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