|Scientific Name||Apocynum cannabinum||USDA PLANTS Symbol||APCA|
|Common Name||Indian Hemp||ITIS Taxonomic Serial No.||30157|
Life zones and habitat: Plains to foothills (3400 to 7500 ft.); sandy soils along ditchbanks, gravel bars and disturbed areas.
Plant: Erect 2-1/2 to 5 ft. tall, initial single stemmed, becoming branched later in the season; stems are light green to red and smooth. Stems and leaves contain a milky, bitter-tasting and toxic latex.
Leaves: Smooth, opposite, lanceolate to ovate, 3/4 to 5-1/2 inches long and 3/8 to 2-3/4 inches across; entire margins; medium green or yellowish green upper surface, lower light green, sometimes glaucous; short-petiolate above and sessile below.
Inflorescence: Congested terminal cymes of small white flowers with 5-lobed cylindrical corollas that are 1/8 to 1/4-inch long, slightly longer to twice as long as calyx.
Bloom Period: June to August.
References: "Flora of Colorado" by Jennifer Ackerfield, Illinois Wildflowers and SEINet.
|BONAP Distribution Map
Map Color Key
© Tom Lebsack 2022
Banner photo: Ten Mile Range and Rhodiola integrifolia (King’s Crown) in Summit County