(DC.) H.Rob., S.C.Keeley, Skvarla & R.Chan, Asteraceae |
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Present on Pacific Islands? yes
Primarily a threat at high elevations? no
Risk assessment results: Evaluate, score: 6 (Go to the risk assessment).
Other Latin names: Vernonia elliptica DC.
Common name(s): [more details]
Chinese: guang yao teng |
Habit: herb
Description: "Plants scandent, with slender stems, pith solid; stems, undersides of leaves, and peduncles densely silvery sericeous with long-armed T-shaped hairs. Leaves alternate, short-petiolate; blade oblong to obovate, base obtuse, margins entire to remotely denticulate, apex rounded to apiculate, upper surface green, nearly glabrous, with few scattered hairs, undersurfaces densely sericeous with slender, appressed T-shaped hairs, secondary veins pinnate, 4-6, irregularly arching toward tip. Inflorescences terminal on branches, narrowly pyramidal with usually short, lateral corymbiform branches and branchlets, mature branches usually deflected at nodes; heads in small rather dense clusters; involucral bracts imbricated in ca. 5 series, broadly obtuse to rounded at tip, inner bracts tardily deciduous; receptacle glabrous. Florets ca. 5; corollas white or pale purple in bud and becoming white, ca. 6 mm long, texture of corolla wall thin, funnelform from ca. 1.5 mm above base, without hairs, with scattered glands; anther thecae tailed with minimal basal fringe, apical appendage narrowly oblong; style base broadened with annulus of sclerified cells; upper shaft and branches of style with blunt sweeping hairs. Achenes 5-sided, rarely with extra angle, without hairs, with glandular dots, with numerous idioblasts on surface, with scattered small rhombic or short oblong raphids in wall; carpopodium narrowly stopper-shaped, nearly cylindrical, longer than wide; pappus of numerous slender bristles, narrow near base, broadened distally, somewhat fragile, with few short bristles interspersed" (Robinson & Skvarla, 2010; p. 270).
Also description (as Vernonia elliptica) in the Digital Flora of Taiwan and the Flora of China online.
Habitat/ecology: (no habitat/ecology info known by PIER)
Propagation: Seed
Native range: "India and southeast Asia" (Digital Flora of Taiwan).
Presence:
Pacific | |||
Country/Terr./St. & Island group |
Location |
Cited status &
Cited as invasive & Cited as cultivated & Cited as aboriginal introduction? |
Reference &
Comments |
State of Hawaii
Hawaiian Islands |
Maui Island |
Bishop Museum (U.S.A. Hawaii. Honolulu.) (1998) (voucher ID: BISH 661862)
Taxon name on voucher: Vernonia elliptica DC. |
|
State of Hawaii
Hawaiian Islands |
Oahu Island |
Bishop Museum (U.S.A. Hawaii. Honolulu.) (year unknown) (voucher ID: BISH 453867)
Taxon name on voucher: Vernonia elliptica DC. |
Pacific Rim | |||
Country/Terr./St. & Island group |
Location |
Cited status &
Cited as invasive & Cited as cultivated & Cited as aboriginal introduction? |
Reference &
Comments |
China
China |
China (People's Republic of) |
introduced
invasive cultivated |
Zhengyi, Wu/Raven, Peter H./Deyuan, Hong (2013)
Occasionally cultivated, locally escaped and naturalized. |
China
China |
Hong Kong |
introduced
cultivated |
Zhengyi, Wu/Raven, Peter H./Deyuan, Hong (2013) |
Malaysia
Malaysia |
Malaysia (country of) |
native
|
U.S. Dept. Agr., Agr. Res. Serv. (2013) |
Singapore
Singapore |
Singapore (Republic of) |
native
|
U.S. Dept. Agr., Agr. Res. Serv. (2013) |
Taiwan
Taiwan Island |
Taiwan Island |
introduced
invasive cultivated |
Ching-I Peng, ed. (2013)
"Occasionally cultivated, locally escaped and naturalized in the south". |
Thailand
Thailand |
Thailand (Kingdom of) |
native
|
U.S. Dept. Agr., Agr. Res. Serv. (2013) |
Vietnam
Vietnam |
Vietnam (Socialist Republic of) |
native
|
U.S. Dept. Agr., Agr. Res. Serv. (2013) |
Control: If you know of control methods for Tarlmounia elliptica, please let us know.