Fls in axillary or occ. terminal cymes, solitary fls us. also present; peduncles and pedicels ebracteate. Calyx ± campanulate to cupular, 5-fid, occ. with minute accessory teeth; petals us. 5, oblique, clawed, us. notched towards apex. Staminal column split above into a number of filaments, these us. arranged in 5 bundles; style branches as many as carpels; stigmas capitate, sts obliquely so, or decurrent along branch. Carpels 5-15, 1-ovuled, surrounding and separating from a central axis; distinctly to obscurely or not winged. Shrubs or trees with heteroblastic development and sparse to dense indumentum of stellate hairs, especially on young parts; lvs alt., simple, exstipulate. Endemic to N.Z. Type sp. H. populnea. Reticulate bast fibres well developed and forming a thick layer.
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