Description
Key Characters:
Growth Form:
Malodorous, low subshrubs.
Stems:
Stems lax and sprawling or decumbent, up to 4 m long, mat–forming and usually many branched, without prickles.
Roots:
Rooting at nodes that touch the ground.
Leaves:
Leaves simple.
Opposite and decussate (pairs of leaves alternating 90 degrees between nodes) or ternate.
Blades ovate to lanceolate or oblong–rhombic, 1.2–3.5 cm long, 0.8–1.6 cm wide.
Upper surfaces reticulate–rugose and scabrous or hirsute; lower surfaces strigose on veins or densely tomentulose and densely resinous–glandular, blades fragrant when bruised.
Margins crenate–serrate.
Petioles 0.3–0.6 cm long.
Stipules absent.
Flowers:
Flowers in capitate, hemispherical heads arising in the leaf axils, much longer than subtending leaves; inflorescences becoming oblong in fruit; Peduncles filiform, 2–6 cm long, outer bracts broadly ovate to oblong–ovate, 5–8 mm long, inner ones conspicuously smaller.
Flowers bisexual (perfect). Each flower subtended by an oblong to lanceolate or ovate bract.
Calyx ca. 2 mm long.
Corolla magenta or lilac to rose or purple, salverform, the tube 8–10 mm long, the lobes 3.5–8 mm long, imbricate.
Stamens 4, in 2 pairs, inserted near middle of and included in corolla tube; anthers dithecal, opening by longitudinal slits.
Ovary superior, 1-carpellate, 2-celled, placentation axile; ovules 1 per cell, erect, anatropous; style short; stigma thick, oblique or nearly lateral.
Fruit:
Fruit dark violet; globose; drupaceous; ca. 4 mm in diameter.
Seeds 1 per cell.
Ploidy:
2n = 36 (sterile) or 48 (wild form)
Habitat:
Elevation Range:
Island Status
Kaua'i
Naturalized
O'ahu Only found in cultivation
Lana'i Naturalized
Maui Potentially naturalizing
Hawai'i Only found in cultivation