Pacific Island Ecosystems at Risk (PIER)

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Ranunculus parviflorus
L., Ranunculaceae
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Present on Pacific Islands?  yes

Primarily a threat at high elevations?  yes

Risk assessment results:  Accept (based on second screen), score: 4 (Go to the risk assessment).

Common name(s): [more details]

English: smallflower buttercup, sticktight buttercup

Habit:  herb

Description:  "Annual herbs 1-3 dm tall; stems erect, not rooting at the nodes, pubescent with soft spreading hairs.  Basal leaves simple, reniform, 1.5-2 cm long, 2-2.5 cm wide, 3-parted and again lobed, pilose.  Flowers 1 to several in cymes; receptacle nearly cylindrical, 2-3 mm long at anthesis, 4-10 mm long in fruit; sepals yellowish green, narrowly ovate, ca. 1 mm long, spreading, caducous; petals 5, yellow, narrowly elliptic, 1-2 mm long, base with a truncate nectary scale.  Achenes 10-20  in a globose head, obovate, ca. 1.5 mm long, the faces covered by reddish brown papillae that are produced into minute slender hooks, margins strongly marked, beak deltoid, recurved, ca. 0.5 mm long"  (Wagner et al., 1999; p. 1089).

Habitat/ecology:  In Hawai‘i, "naturalized in fields and pastures, 910-1,830 m"  (Wagner et al., 1999; p. 1089).

Propagation:  Seed

Native range:  Europe (Wagner et al., 1999; p. 1089).

Presence:

Pacific
Country/Terr./St. &
Island group
Location Cited status &
Cited as invasive &
Cited as cultivated &
Cited as aboriginal introduction?
Reference &
Comments
Australia (Pacific offshore islands)
Lord Howe Island
Lord Howe Island introduced
invasive
Orchard, Anthony E., ed. (1994) (p. 21)
"A weed of gardens and similar cultivated or open ground". Vouchers cited: P.S. Green 1618 (A, K), A.C. Beauglehole 5537 (CANB, MEL, NSW), A.C. Beauglehole 5538 (MEL), J.D. McComish 110 (K)
Australia (Pacific offshore islands)
Norfolk Islands
Norfolk Island introduced
invasive
Orchard, Anthony E., ed. (1994) (p. 10)
"A weed of gardens and similar cultivated or open ground". Vouchers cited: J.H. Maiden & J.L. Boorman s.n. (NSW), J.D. McComish 38A p.p. (NSW)
State of Hawaii
Hawaiian Islands
Hawai‘i (Big) Island introduced
invasive
Wagner, Warren L./Herbst, Derral R./Sohmer, S. H. (1999) (p. 1089)
Voucher cited: Forbes 275.H (BISH)
New Caledonia
New Caledonia Archipelago
Île Grande Terre introduced
MacKee, H. S. (1994) (p. 120)
Vouchers cited: Scchlechter 15018, MacKee 13335, MacKee 27561, Cherrier in MacKee 44656
Pacific Rim
Country/Terr./St. &
Island group
Location Cited status &
Cited as invasive &
Cited as cultivated &
Cited as aboriginal introduction?
Reference &
Comments
New Zealand
New Zealand
New Zealand (country) introduced
invasive
Webb, C. J./Sykes, W. R./Garnock-Jones, P. J. (1988) (p. 1022)
"Waste land, tussock grassland and scrub, grassy ground under trees, gardens".


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This page was created on 2 MAR 2007 and was last updated on 7 MAR 2010.