A genus of about 10-15 species, trees, of warm temperate, subtropical, and tropical areas.
ID notes:When not in flower or fruit, Tilia and Morus are often confused. They can be easily told apart by leaf venation. Morus has the main leaf veins splitting towards the margin but then rejoining to form a rather prominent, looping (scalloped) marginal vein; the basal veins 3, palmate, sometimes an additional prominent vein on each side joining the lateral vein above its divergence from the petiole end; and the main lateral leaf veins (above the basal veins) mainly alternate. Tilia has the main leaf veins splitting several times towards the leaf margin and leading into the teeth without rejoining and forming a marginal vein; the basal veins 5, palmate, all joining together at the summit of the petiole; and the main lateral leaf veins (above the basal veins) usually opposite.
Ref: Endress & Bittrich In Kubitzki, Rohwer, & Bittrich (1993); Galla et al. (2009); Gardner et al. (2021); Saar et al. (2012); Wunderlin (1997) In Flora of North America Editorial Committee (1997). Show full citations.