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HS1140: Field Guide to Identify the Common Casuarina (Australian Pine) Species in Florida

Figure 8. Casuarina stem cross-sections at the internode (Woodall and Geary, 1985). Left, C. equisetifolia has the most apparent stomatal trench with exserted hairs. Also, note the “pointy” appearance of the cross-section as compared to the rounded appearance of the other species’ cross-sections; middle, C. cunninghamiana has tightly packed hairs such that the stomatal trench is not obvious; and right, C. glauca also has less obvious stomatal trenches that are tightly packed with hairs.