Pacific Island Ecosystems at Risk (PIER)

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Calyptocarpus vialis
Less., Asteraceae
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Present on Pacific Islands?  yes

Primarily a threat at high elevations?  no

Common name(s): [more details]

Chinese: jin yao jian jiu

English: calyptocarpus, creeping Cinderella-weed, straggler daisy

Spanish: hierba de caballo

Habit:  herb

Description:  "Herbaceous perennials. Stems prostrate, many from base, rooting at nodes, densely appressed strigillose. Leaves ovate to broadly ovate, to 35 x 25 mm, densely appressed strigillose on both surfaces, hirtellous especially on lower surface, apex acute, apiculate, margins crenate-serrate, base attenuate; petiole 3-8 mm long, narrowly winged toward blade, ciliate along margins. Heads axillary, solitary, subsessile, peduncle occasionally to 15 mm long. Involucre narrowly oblong-oblanceoloid, 6-7 x 2.5-3.5 mm. Involucral bracts 4, concave, lanceolate, acuminate and apiculate, entire, 6-7 x 3-3.5 mm, glabrous within, strigillose without, in 2 series. Paleae hyaline, narrowly elliptic, 3.5-4.8 x 0.8-1 mm. Ray florets 3-7 (-8), yellow; corolla 4.5-6.2 x 1.4-1.8 mm; achenes oblanceolate, 3.5-4 mm x 1.7-2 mm, tan to blackish, flattened, with small lateral wing-like projections, pappus of usually 2 ascending-divergent awns, 1.2-2.4 mm long. Disc florets 3-7 (-8); corolla 2.6-3.6 mm long, densely papillose within; anthers black, 1 mm long, apical appendages lanceolate, obtuse; achenes similar to those of ray florets but slightly narrower and thicker, sometimes 3-angled, 1.1-1.7 mm across, evidently muricate"  (Digital Flora of Taiwan).

Description from the Flora of China online.
Description from the Flora of North America online.

Habitat/ecology:  In Hawai‘i, "a weed of disturbed habitats, especially lawns, often forming a dense ground cover" (Wagner et al., 1999; p. 284).

Propagation:  Seed

Native range:  "Texas south to Guatemala, Costa Rica, and Cuba" (Wagner et al., 1999; p. 284).

Presence:

Pacific
Country/Terr./St. &
Island group
Location Cited status &
Cited as invasive &
Cited as cultivated &
Cited as aboriginal introduction?
Reference &
Comments
Guam
Guam Island
Guam Island introduced
Raulerson, L. (2006) (p. 67)
State of Hawaii
Hawaiian Islands
Hawai‘i (Big) Island introduced
invasive
Oppenheimer, Hank (2007) (p. 20)
Voucher cited: Oppenheimer H40508 (BISH, PTBG)
State of Hawaii
Hawaiian Islands
Kaho‘olawe Island introduced
invasive
Oppenheimer, Hank L. (2006) (pp. 10-11)
Voucher cited: Oppenheimer, G. Hanse & J. Bruch H10402 (BISH, PTBG)
State of Hawaii
Hawaiian Islands
Kaua‘i Island introduced
invasive
Wagner, Warren L./Herbst, Derral R./Sohmer, S. H. (1999) (p. 284)
State of Hawaii
Hawaiian Islands
Lāna‘i Island introduced
invasive
Wagner, Warren L./Herbst, Derral R./Sohmer, S. H. (1999) (p. 284)
State of Hawaii
Hawaiian Islands
Maui Island introduced
invasive
Wagner, Warren L./Herbst, Derral R./Sohmer, S. H. (1999) (p. 284)
State of Hawaii
Hawaiian Islands
Moloka‘i Island introduced
invasive
Wagner, Warren L./Herbst, Derral R./Sohmer, S. H. (1999) (p. 284)
State of Hawaii
Hawaiian Islands
O‘ahu Island introduced
invasive
Wagner, Warren L./Herbst, Derral R./Sohmer, S. H. (1999) (p. 284)
Voucher cited: Fosberg 44449 (US)
Kiribati
Tungaru (Gilbert) Islands
Tarawa Atoll introduced
invasive
Space, James C./Imada, Clyde T. (2004) (p. 73)
Voucher: Imada 2003-26 (BISH 697641)
United States (other Pacific offshore islands)
Midway Atoll
Midway Atoll introduced
invasive
Bruegmann, Marie M. (1999) (p. 1)
Voucher cited: Bruegmann 2019 (BISH)
Rare
United States (other Pacific offshore islands)
Midway Atoll
Sand Island introduced
invasive
Starr, Forest/Starr, Kim/Loope, Lloyd (2008) (pp. B-5)
Pacific Rim
Country/Terr./St. &
Island group
Location Cited status &
Cited as invasive &
Cited as cultivated &
Cited as aboriginal introduction?
Reference &
Comments
Australia
Australia (continental)
Queensland introduced
invasive
U.S. Dept. Agr., Agr. Res. Serv. (2013)
Naturalized
Costa Rica
Costa Rica
Costa Rica (Republic of) native
U.S. Dept. Agr., Agr. Res. Serv. (2013)
El Salvador
El Salvador
El Salvador (Republic of) native
U.S. Dept. Agr., Agr. Res. Serv. (2013)
Guatemala
Guatemala
Guatemala (Republic of) native
U.S. Dept. Agr., Agr. Res. Serv. (2013)
Honduras
Honduras
Honduras (Republic of) native
U.S. Dept. Agr., Agr. Res. Serv. (2013)
Mexico
Mexico
Mexico (United Mexican States) native
U.S. Dept. Agr., Agr. Res. Serv. (2013)
Taiwan
Taiwan Island
Taiwan Island introduced
invasive
Ching-I Peng, ed. (2013)
A weed of roadsides; sometimes cultivated as a ground cover on traffic islands.
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)
United States (other states) native
U.S. Dept. Agr., Agr. Res. Serv. (2013)
Alabama, Louisiana, Mississippi, Texas
United States (continental except west coast)
United States (other states)
USA (Florida) native
U.S. Dept. Agr., Agr. Res. Serv. (2013)


Need more info? Have questions? Comments? Information to contribute? Contact PIER! (pier@hear.org)

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This page was created on 17 DEC 2003 and was last updated on 8 MAR 2013.