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

Click on an image for links to BIGGER PICTURES

Present on Pacific Islands?  yes

Primarily a threat 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)

Pacific Rim
Country/Terr./St. & Island group	Location	Cited status & Cited as invasive & Cited as cultivated & Cited as aboriginal introduction?	Reference & Comments
Japan Japan	Japan (country)	introduced	Mito, Toshikazu/Uesugi, Tetsuro (2004) (p. 190)

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. (2011)

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).

Information about Coreopsis basalis as a weed (worldwide references) may be available from the Global Compendium of Weeds (GCW).

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

References:

Flora of North America Editorial Committee, eds. 2011. 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.

Mito, Toshikazu/Uesugi, Tetsuro. 2004. Invasive alien species in Japan: the status quo and the new regulation for prevention of their adverse effects. Global Environmental Research 8(2)/2004: 171-191.

U.S. Dept. Agr., Nat. Res. Cons. Serv. 2011. The PLANTS Database. National Plant Data Center, Baton Rouge, LA 70874-4490 USA.