Flora of the Hawaiian Islands
Dicotyledon Literature for Metrosideros tremuloides
Wagner et al., 1990, 1999.
   Myrtaceae -- The Myrtle Family Bibliography
      Metrosideros tremuloides

Common name(s): `ahihi, `ahihi ku ma kua, `ahihi lehua, `ohi`a `ahihi, kumakua, lehua `ahihi
General Information
DistributionIn the Hawaiian Islands, endemic to O`ahu.

Click here for detailed USGS map by Jonathan Price
Shrubs to small trees, bark pale, fissured, flaky, vegetative buds narrow, pointed; branchlets slender, spreading.
Leaves lanceolate, 2-4.5 cm long, 0.5-1.5 cm wide, glabrous, apex acute, base cuneate to attenuate, petioles 6-10 mm long, 1-1.5 mm wide, often at right angles or more to the stems, petioles and midrib often red.
Flowers red, in inflorescences of 3-4 pairs of cymules, glabrous or appressed short-pubescent, peduncles slender, often at right angles to the axis, ca. 7 mm long and 0.7 mm wide, pedicels ca. 4 mm long and 0.5 mm wide, bracts ovate, ca. 4 mm long and 2 mm wide, caducous; hypanthium 2.5-3 mm high, ca. 4 mm wide; sepals triangular, ca. 1.5 mm long and 2 mm wide; petals obovate, ca. 3 mm long and 2 mm wide; stamens 1.5-2 cm long; style 2-2.5 cm long.
Fruiting hypanthium 5-6 mm long and wide, with prominent veins, glabrous, capsules exserted.
2n = 22*