Pacific Island Ecosystems at Risk (PIER)

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Spermacoce verticillata
L., Rubiaceae
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Present on Pacific Islands?  yes

Primarily a threat at high elevations?  no

Other Latin names:  Borreria verticillata (L.) G. Mey.

Common name(s): [more details]

English: shrubby false-buttonweed

Habit:  herb

Description:  "Plants perennial, glabrous or nearly so, usually erect and simple or sparsely branched, often copiously branched from the base, usually 40 cm. high or less, the stems tetragonous; stipule sheath very short, the setae about 1.5 mm. long; leaves sessile or nearly so, linear or lance-linear, mostly 1.5-4 cm. long and 1.5-6 mm. broad, commonly 1-nerved, often with fascicles of smaller leaves in the axils; flower heads chiefly terminal but sometimes arising also from the upper leaf axils, the terminal heads subtended by 2 or 4 leaflike bracts; hypanthium pilose above, the 2 sepals narrowly triangular, 1.5 mm. long or less; corolla white, 3 mm. long, hispidulous outside at the apex, the lobes about equaling the tube; anthers exserted; capsule 2.5 mm. long; seeds brown"  (Standley & Williams, 1974; 24/11 pp. 22-23).

"Annual herb with straggling, rather flexuous stems, to ca. 60 cm high. Leaves linear or linear-lanceolate, glabrous, mostly less than 2.5 cm long. Flowers white, very small, borne in sessile clusters at the upper stem nodes. Fruit a small capsule. Seeds reddish-brown" (Sykes, 1970; p. 175).

Habitat/ecology:  In Guatemala (native), "a widely distributed and in many localities a common weedy plant, usually at low elevations but ascending to about 2,000 m., in thickets or savannas, meadows, or in waste or cultivated ground"  (Standley & Williams, 1974; 24/11 pp. 22-23).

Propagation:  Seed

Native range:  "Mexico; British Honduras to Panama; southward through most of South America; West Indies"  (Standley & Williams, 1974; 24/11 pp. 22-23).

Presence:

Pacific
Country/Terr./St. &
Island group
Location Cited status &
Cited as invasive &
Cited as cultivated &
Cited as aboriginal introduction?
Reference &
Comments
French Polynesia
Society Islands
Huahine Island introduced
invasive
Florence, J./Chevillotte, H./Ollier, C./Meyer, J.-Y. (2013)
As Spermacoce verticillata C. Linnaeus. Voucher cited: J. Florence & R. Tahuaitu 11636 (PAP)
Adventice
French Polynesia
Society Islands
Tahiti Island introduced
invasive
Florence, J./Chevillotte, H./Ollier, C./Meyer, J.-Y. (2013)
Voucher cited: P. Morat 6384 (PAP)
Adventice
French Polynesia
Society Islands
Tahiti Island   National Tropical Botanical Garden (U.S.A. Hawaii. Kalaheo.) (1982) (voucher ID: PTBG 37188)
Taxon name on voucher: Spermacoce verticillata
Niue
Niue
Niue Island introduced
invasive
Sykes, W. R. (1970) (p. 175)
Voucher cited: CHR 170396
Solomon Islands
Solomon Islands
Solomon Islands   Swarbrick, John T. (1997) (p. 89)
Pacific Rim
Country/Terr./St. &
Island group
Location Cited status &
Cited as invasive &
Cited as cultivated &
Cited as aboriginal introduction?
Reference &
Comments
Colombia
Colombia
Colombia (Republic of) native
U.S. Dept. Agr., Agr. Res. Serv. (2013)
Costa Rica
Costa Rica
Costa Rica (Republic of) native
U.S. Dept. Agr., Agr. Res. Serv. (2013)
Ecuador (Mainland)
Ecuador
Ecuador (Republic of) (continental) native
U.S. Dept. Agr., Agr. Res. Serv. (2013)
Guatemala
Guatemala
Guatemala (Republic of) native
Standley, Paul C./Williams, Louis O. (1975)
Honduras
Honduras
Honduras (Republic of) native
U.S. Dept. Agr., Agr. Res. Serv. (2013)
Mexico
Mexico
Mexico (United Mexican States) native
Standley, Paul C./Williams, Louis O. (1975)
Nicaragua
Nicaragua
Nicaragua (Republic of) native
U.S. Dept. Agr., Agr. Res. Serv. (2013)
Panama
Panama
Panama (Republic of) native
Standley, Paul C./Williams, Louis O. (1975)
Perú
Perú
Perú (Republic of) native
U.S. Dept. Agr., Agr. Res. Serv. (2013)


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This page was created on 14 JUN 2010 and was last updated on 12 MAR 2012.