Cartrema americana was formerly classified as Osmanthus americanus. Following the discovery that Osmanthus was polyphyletic,[6] it was transferred to the segregate genus Cartrema together with Osmanthus floridanus[7] and five Asian species.[8]
Cartrema americana grows to 4–7 m (13–23 ft), rarely to 11 m (36 ft) tall. The leaves are 5–14 cm (2.0–5.5 in) long and 2–4 cm (0.79–1.57 in) broad, with an entire margin. Its flowers, produced in early spring, are small (1 cm long), white, with a four-lobed corolla and have a strong fragrance. The fruit is a globose dark blue drupe 6–15 mm (0.24–0.59 in) diameter, containing a single seed.[9][10][11]
^Shi-Quan Guo, Min Xiong, Chun-Feng Ji, Zhi-Rong Zhang, De-Zhu Li and Zhi-Yong Zhang, Molecular phylogenetic reconstruction of Osmanthus Lour. (Oleaceae) and related genera based on three chloroplast intergenic spacers, Plant Syst Evol (2011) 294:57–64
^Nesom, G.L. 2012. Synopsis of American Cartrema (Oleaceae). Phytoneuron 2012-96: 1–11.
^José Ignacio De Juana Clavero, Cambios nomenclaturales en la sección Leiolea (Spach) P. S. Green, del género Osmanthus Lour. (Oleaceae), Bouteloua 22: 28-39 (XI-2015)