Lappula occidentalis

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Scientific Name Lappula occidentalis var. occidentalis (Lappula redowskii var. redowskii) USDA PLANTS Symbol LAOCO
Common Name Western Stickseed, Flatspine Sheepburr ITIS Taxonomic Serial No. 528678
Family Boraginaceae (Forget-me-not) SEINet
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Description Life zones and habitat: Plains to subalpine (3500 to 10000 ft.); drier soils in prairies, roadsides and disturbed areas.
Plant: Erect annual 6 to 24 inches tall, stem branching upwards.
Leaves: Alternate, linear to narrowly oblanceolate, 3/4 to 3 inches long and less than 3/8-inch wide, sessile, margins without teeth, surfaces with soft hairs and without obvious lateral veins.
Inflorescence: Very small light blue to white flowers in curled racemes at stem tips; funnel-shaped corolla with 5 lobes with rounded tips, less than 1/4-inch across.
Bloom Period: April to August.
Fruit: Prickly egg-shaped cluster 1/8-inch tall of four, spiny nutlets each with a single row of stiff, barbed prickles; prickles are separated, not fused at their bases.
References: "Flora of Colorado" by Jennifer Ackerfield, Kansas Wildflowers and Grasses and SEINet.
BONAP Distribution Map

Colorado Status:

© Tom Lebsack 2021