Maintenance costs of serotiny in a variably serotinous pine: The role of water supply - Fig 3

<p><b>Peduncle sections pertaining to serotinous cones of > 5 years from <i>Pinus halepensis</i> (A, B) and <i>P</i>. <i>brutia</i> (C)</b>. Xylem of (A) peduncle is entirely sapwood; (B) xylem has a typical incipient heartwood starting from the pith and (C) is entirely heartwood. (A) and (B) peduncles show living cortical tissues (phloem and cortical parenchyma), but not (C). 99% of <i>P</i>. <i>halepensis</i> cones sampled in this study were in the ‘(A)’ status.