Pacific Island Ecosystems at Risk (PIER)

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Diodia sarmentosa
Sw., Rubiaceae
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Present on Pacific Islands?  no

Primarily a threat at high elevations?  no

Other Latin names:  Diodella sarmentosa (Sw.) Bacigalupo & E.L. Cabral

Common name(s): [more details]

English: tropical buttonweed

Habit:  herb

Description:  "Scrambling herb with a tap root.  Stems 1-4 m long, often with numerous lateral branches, square in cross-section and with long hairs on the angles.  Leaves yellowish-green, lanceolate, 1.8-6.3 - 0.7-2.8 cm; leaf blade scabrous above with dense tubercular hairs, smooth below; petiole 1-5 mm long.  Flowers 1-8 in axillary clusters at most nodes, each flower 1.5-3 mm long with 4 mauve or white petals.  Seeds dark blackish red, 2-4 mm long, 1.5 mm wide, 0.8 mm thick." (Waterhouse & Mitchell, 1998; pp. 83-84).

Habitat/ecology:  "A strand plant, often near high water mark; grassland and bushland at low altitudes, and a weed of cultivation." (Waterhouse & Mitchell, 1998; pp. 83-84).

Propagation:  Seed (Waterhouse & Mitchell, 1998; pp. 83-84).

Native range:  Tropical America (Waterhouse & Mitchell, 1998; pp. 83-84). African and American tropics, widely naturalized elsewhere (GRIN).

Presence:

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
U.S. Dept. Agr., Agr. Res. Serv. (2013)
Honduras
Honduras
Honduras (Republic of) native
U.S. Dept. Agr., Agr. Res. Serv. (2013)
Indonesia
Indonesia
Indonesia (Republic of)   Waterhouse, B. M./Mitchell, A. A. (1998) (p. 84)
Mexico
Mexico
Mexico (United Mexican States) native
U.S. Dept. Agr., Agr. Res. Serv. (2013)
Chiapas, Jalisco, Nayarit, Oaxaca, Veracruz
Nicaragua
Nicaragua
Nicaragua (Republic of) native
U.S. Dept. Agr., Agr. Res. Serv. (2013)
Panama
Panama
Panama (Republic of) native
U.S. Dept. Agr., Agr. Res. Serv. (2013)
Singapore
Singapore
Singapore (Republic of) introduced
invasive
Chong, Kwek Yan/Tan, Hugh T. W./Corlett, Richard T. (2009) (p. 34)
Naturalised

Comments:  "An important weed in Africa and India. A weed of coffee, tea and leucaena plantations in Indonesia. A BIOTROP listed species." (Waterhouse & Mitchell, 1998; pp. 83-84).


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This page was created on 14 MAR 2005 and was last updated on 18 APR 2013.