Pacific Island Ecosystems at Risk (PIER)

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Ruellia devosiana
Morren., Acanthaceae
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Present on Pacific Islands?  yes

Primarily a threat at high elevations?  no

Common name(s): [more details]

English: Brazilian wild petunia

Habit:  herb

Description:  "Perennial herb; main stem sprawling, side branches ±erect, to 18 inches tall, pubescent.  Leaves shortly petiolate; blades broadly lanceolate to elliptic, to 3 inches long, upper side green with silvery white along veins, underside purplish.  Flowers solitary, axillary; calyx lobes linear, margins ciliate; corolla to 1.75 inches long, white streaked with purple or lilac, tube narrow at base, flaring into throat, lobes notched apically"  (Staples & Herbst, 2005; p. 91).

"Perennial herb to 18" tall, with opposite 3" leaves having silvery veins above and purple undersides, 1.5-2" tubular white flowers streaked with purple, and 1/2-3/4 in. club-shaped fruits"(Hawaii's Most Invasive Horticultural Plants).

Habitat/ecology:  Moist forests(Hawaii's Most Invasive Horticultural Plants)

Propagation:  Seed

Native range:  Brazil (Lorence et al, 1995; p. 20).


Country/Terr./St. &
Island group
Location Cited status &
Cited as invasive &
Cited as cultivated &
Cited as aboriginal introduction?
Reference &
State of Hawaii
Hawaiian Islands
Kaua‘i Island introduced
Lorence, David H./Flynn, Timothy W./Wagner, Warren L. (1995) (p. 20)
Voucher cited: T. Flynn et al. 3524 (BH, BISH, MO, NA, NY, PTBG, US)

Control:  If you know of control methods for Ruellia devosiana, please let us know.

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This page was created on 18 JAN 2004 and was last updated on 9 MAY 2017.