Bistorta species

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Scientific Name Bistorta bistortoides (Polygonum bistortoides) USDA PLANTS Symbol POBI6
Common Name American Bistort ITIS Taxonomic Serial No. 509552
Family Polygonaceae (Buckwheat) SEINet
Reference
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Description Life zones and habitat: Foothills to alpine (7000 to 14000 ft); meadows, streamsides, wetlands, tundra.
Plant: Erect perennial 8 to 30 inches tall, 1 to 3 stems.
Leaves: Mostly basal, dark green, long, narrowly lanceolate or oblong-lanceolate with pronounced center vein, often wavy edges; a few similar but shorter stem leaves widely spaced; surfaces mostly smooth upper or hairy beneath.
Inflorescence: Dense cluster of many small white or pinkish flowers 3/16-inch long with 5 tepals, in a short, compact raceme; bulblets absent.
Bloom Period: June to September.
Reference: "Flora of Colorado" by Jennifer Ackerfield, "A Field Guide to Wildflowers of the Rocky Mountains" by Carl Schreier and "Guide to Colorado Wildflowers" by G.K. Guennel.
BONAP Distribution Map

Colorado Status:
Native
Scientific Name Bistorta vivipara (Polygonum viviparum) USDA PLANTS Symbol POVI3
Common Name Alpine Bistort ITIS Taxonomic Serial No. 823849
Family Polygonaceae (Buckwheat) eFloras.org
Reference
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Description Life zones and habitat: Montane to alpine (8500 to 14000 ft); exposed areas, moist meadows, streamsides, tundra.
Plant: Erect, slender perennial 3 to 14 inches tall.
Leaves: Mostly basal, with 2 to 4 alternate stem leaves; smooth surfaces and edges often rolled downward; basal leaves 1 to 3 inches long, linear to lanceolate or narrowly ovate; smaller stem leaves.
Inflorescence: Several small white to pinkish flowers 3/16-inch long with 4 to 6 tepals in a loose raceme 1-1/4 to 2-1/2 inches long; reddish-purple or brown bulblets along stem below.
Bloom Period: June to September.
Reference: "Flora of Colorado" by Jennifer Ackerfield, Minnesota Wildflowers and "Guide to Colorado Wildflowers" by G.K. Guennel.
BONAP Distribution Map
Colorado Status:
Native

© Tom Lebsack 2021