Apocynum species

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Scientific Name Apocynum androsaemifolium USDA PLANTS Symbol APAN2
Common Name Spreading Dogbane ITIS Taxonomic Serial No. 30156
Family Apocynaceae (Dogbane) SEINet
Reference
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Description Life zones and habitat: Foothills to subalpine (5000 to 10000 ft.); open areas along roads, trails, hillsides, and in forest clearings.
Plant: Perennial with erect, smooth stems, 6 to 10 inches tall.
Leaves: Opposite, drooping, ovate to lanceolate-ovate, shiny and dark green upper surface, 3/4 to 4 inches long and 3/8 to 2-3/8 inches wide.
Inflorescence: Small bell-shaped blossoms 3/8-inch across in small clusters; 5 white corolla lobes with pink to red veins, reflexed; 5 short, triangular sepals.
Bloom Period: June to August.
References: "Flora of Colorado" by Jennifer Ackerfield, "Guide to Colorado Wildflowers" by G.K. Guennel and SEINet.
BONAP Distribution Map

Colorado Status:
Native
Scientific Name Apocynum cannabinum USDA PLANTS Symbol APCA
Common Name Indian Hemp ITIS Taxonomic Serial No. 30157
Family Apocynaceae (Dogbane) SEINet
Reference
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Description 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

Colorado Status:
Native



© Tom Lebsack 2021