How to Identify Cannonball Mangrove

Begin with color and the sapwood-to-heartwood transition, which is one of the clearest cues on this wood. The sample reads as pale tan sapwood grading into a medium brown heartwood, with a warm, slightly reddish mahogany tone in the heart. That two-tone contrast — quiet pale outer wood against a warmer brown core — combined with a soft luster is a strong first read for a mahogany-family mangrove.

Examine the growth rings and texture next. Unlike the very tight, densely packed rings of the harder Rhizophora and Lumnitzera mangroves, Cannonball Mangrove shows moderate, fairly regular growth rings — a visible, evenly spaced growth pattern rather than a hairline-tight one. The texture is medium and even, and the grain runs straight to slightly interlocked. If you see a warm brown, medium-textured wood with a clear but unhurried ring pattern, that fits.

Weigh it in the hand and test its firmness. This is a medium to medium-hard wood: heavier and firmer than a light tropical cedar, but it does not have the dead-dense, rock-hard heft of the true structural mangroves. A fingernail or light knife cut meets moderate resistance, not the near-impenetrable firmness of Rhizophora. Freshly cut or sanded surfaces often give off a mild fragrant, cedar-or-mahogany-like scent, another useful confirming clue.

Check the end grain. Xylocarpus is diffuse-porous with small to medium pores distributed fairly evenly, without a ring of large early-wood pores; the end grain is moderately dense and even. The most common confusions are with true mahogany and cedar (which share the warm color and mahogany scent but are drier-forest woods with a softer, lighter feel) and with the other mangroves. Against Rhizophora and Lumnitzera, the giveaways are the lighter weight, the more open and regular ring pattern, and the warmer mahogany tone; against Avicennia, look for the absence of the concentric included-phloem dark bands those woods often show in the end grain. Where color and ring pattern leave doubt, a positive species call ultimately depends on end-grain anatomy under magnification and the coastal, tidal source.