FIGURES 3–9. Laurencia caduciramulosa. Fig. 3 in Spread of the introduced species Laurencia caduciramulosa (Rhodomelaceae, Rhodophyta) to the northwest Atlantic: A morphological and molecular analysis

FIGURES 3–9. Laurencia caduciramulosa. Fig. 3. Habit of a plant showing crown of small deciduous branchlets near apices. Note a single discoid holdfast (arrow) (200 µm). Fig. 4. Basal portion of a plant showing secondary discoid holdfast (arrow) (500 µm). Fig. 5. Upper portions of a branch with small branchlets and scars of released branchlets (arrowheads). Note lenticular thickenings throughout the branch (arrows) (100 µm). Fig. 6. Cortical cells in surface view showing one single corp en cerise per cell in living material (25 µm). Fig. 7. Cortical cells in surface view of the mid-portion of a branch showing secondary pit connections (arrow) (25 µm). Fig. 8. Transverse section of a branch showing lenticular thickenings in the wall of medullary cells (50 µm). Fig. 9. Transverse section of the upper portion of a branch showing an axial cell (a) with four pericentral cells (p). Note lenticular thickenings in detail (25 µm).