Light-interception efficiency as a function of (A) specific leaf area, (B) above-ground leaf area ratio, (C) leaf mass fraction, (D) self-shading, (E) projection efficiency for direct light and (F) for indirect light. Values of r2 and P are given for significant and borderline regressions. Data are the mean ± s.e. for each species. The means were calculated by weighing the relative contribution of orthotropic and plagiotropic shoots to the foliage of each species. The species are: Hydrangea serratifolia, Boquila trifoliolata, Luzuriaga radicans, Cissus striata, Elytropus chilensis, Luzuriaga polyphylla and Mitraria coccinea.