Coreopsis basalis (A. Dietr.) S. F. Blake, Asteraceae

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Present on Pacific Islands?  yes

Threat only at high elevations?  no

Common name(s): [more details]

English: goldenmane tickseed

Habit:  herb

Description:  "Annuals, 10-50+ cm. Aerial nodes proximal to first peduncle usually 5-10+, distalmost 1-3 internodes 4-7(-10) cm. Leaves: basal and cauline on proximal ³/4-⁷/8 of plant heights; petioles 8-35(-120) mm; blades simple or 1(-2)-pinnately lobed with 3-9+ lobes, simple blades or terminal lobes elliptic or lanceolate to oblanceolate or linear, 25-55+ x (1-)2-9(-20) mm. Peduncles 6-15+ cm. Calyculi of lance-deltate to linear bractlets 6-9(-12+) mm. Phyllaries lance-ovate, 7-9+ mm. Ray laminae yellow, usually each with a proximal, red-brown to purple spot or band, 15-20+ mm. Disc corollas 3-4 mm, apices red-brown to purple. Cypselae 1.2-1.8 mm, wingless (margins ± inrolled adaxially, ± corky)" (Flora of North America)

Habitat/ecology:  "Sandy soils in open, often disturbed, places" (Flora of North America)

Propagation:  Seed

Native range:  South-central and southeastern United States; naturalized in southeastern United States (GRIN)

Presence:

Pacific
Country/Terr./St. & Island group	Location	Cited status & Cited as invasive & Cited as cultivated & Cited as aboriginal introduction?	Reference & Comments
Marshall Islands Ralik Chain	Jaluit (Jãlwõj) Atoll	introduced	Fosberg, F. Raymond (1990) (p. 38)

Also reported from
Country/Terr./St. & Island group	Location	Cited status & Cited as invasive & Cited as cultivated & Cited as aboriginal introduction?	Reference & Comments
United States (continental except west coast) United States (other states)	USA (Florida)		U.S. Dept. Agr., Nat. Res. Cons. Serv. (2005)

Comments:  Reported invasive in Japan (The Research Institute for Bioresources. Okayama University. Laboratory of Wild Plant Science. Naturalized plants from foreign country into Japan).

Additional information:  Additional online information about Coreopsis basalis is available from the Hawaiian Ecosystems at Risk project (HEAR).

Taxonomic information about Coreopsis basalis may be available from the Germplasm Resources Information Network (GRIN).

References:

Flora of North America Editorial Committee, eds. 1993. Flora of North America North of Mexico (online edition).

Fosberg, F. Raymond. 1990. A review of the natural history of the Marshall Islands. Atoll Research Bulletin No. 330. Smithsonian Institution, Washington. 100 pp.

U.S. Dept. Agr., Nat. Res. Cons. Serv. 2005. The PLANTS Database, Version 3.5 (http://plants.usda.gov). National Plant Data Center, Baton Rouge, LA 70874-4490 USA.