FIGURE 14. Cancellus bending and crystallite imbrication in Hornera currieae n. sp. A. SEM montage of gonozooid-bearing branch tip of fertile colony, abfrontal surface; arrows show the growth direction of the terminal parts of cancelli, determined from the orientation of their hooded openings. In addition to distal and proximal bending, cancelli at branch axils can be seen to bend laterally toward the fertile branch; (gz, gonozooid) (TAN0105 stn 115). B. Example of the relationship between terminal cancellus growth direction and mean surface crystallite imbrication score at the internode scale: arrows indicate dominant cancellus growth direction, red/blue branch shading indicates positive or negative mean crystallite imbrication scores for each region (blue, net proximal; red, net distal) (TAN0104 stn 153). C. Mixed front-face/back-face isosurface composite image of a branch bifurcation showing cancellus hood orientation and underlying cancellus bending; left branch is a lateral branch with proximal cancellus growth, right branch is the main support branch with a distalward gonozooid, towards which the initially proximally growing cancelli have turned (TAN0104 stn 153). Scale bars: A, 200 µm; B, 5 mm; C, 100 µm.