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Montana Field Guide

Montana Field Guides

Golden Tickseed - Coreopsis tinctoria


Global Rank: G5
State Rank: S4

Agency Status
USFWS:
USFS:
BLM:
MNPS Threat Rank:
C-value: 6

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General Description
Glabrous, taprooted annual or biennial. Stems erect, usually branched, 20–80 cm. Leaves cauline, opposite, petiolate; blades ovate, 2–10 cm long, 1 to 2 times deeply divided into 3 to 7 well-separated, long, linear to oblanceolate segments. Inflorescence open, corymbiform, linear-bracted; peduncles 1–10 cm long. Heads radiate; involucres campanulate; phyllaries ovate, dimorphic in 2 series; outer ca. 2 mm long; inner purplish, 5–9 mm long, striate; receptacle flat with scales between the flowers. Ray flowers sterile, 8, yellow; ligules 6–15 mm long with a dark base. Disk flowers perfect, purple to brown; corolla 2–3 mm long, 4-lobed, tube shorter than the throat; style branch appendages short, blunt. Pappus absent or inconspicuous. Achenes oblong, flattened, 1–3 mm long, glabrous (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Species Range
Present
 


Range Comments
Throughout temperate N. America (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Summary of Observations Submitted for Montana
Number of Observations: 10

(Click on the following maps and charts to see full sized version) Map Help and Descriptions
Relative Density

Recency

 

(Observations spanning multiple months or years are excluded from time charts)



Habitat
Moist soil along rivers, streams, ponds; plains, valleys (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

References
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Citation for data on this website:
Golden Tickseed — Coreopsis tinctoria.  Montana Field Guide.  .  Retrieved on , from