Chengiodendron C. B. Shang, X. R. Wang, Yi F. Duan & Yong F. Li

Type species: Chengiodendron marginatum (Champ. ex Benth.) C. B. Shang, X. R. Wang, Yi F. Duan & Yong F. Li = Osmanthus marginatus (Champ. ex Benth.) Hemsl.

Synonyms: Amarolea, Osmanthus sect. Leiolea, Cartrema

Distribution: SE Asia (China, Japan, Cambodia, India, Laos, Vietnam, Indonesia)

Number of species: 3 (-5)

Description from Li et al. (2020): Shrubs or trees 5-10 m. Branchlets, petiole, and leaf blade glabrous. Petiole 1-2.5 cm long; leaf blade broadly elliptic to narrowly lanceolate, rarely obovate, 7-20 x 2-5.5 cm, thick or very thick leathery, base narrowly to broadly cuneate, margin entire or rarely obscurely serrate along distal half, apex acuminate; midrib and 6-8 primary veins somewhat impressed adaxially and raised abaxially. Cymes in short and compact panicles, axillary, rarely terminal, 1-2 cm long, 10-20-flowered; bracts ovate, 2-2.5 cm long. Pedicels 1-2 mm long. Calyx 1.5-2 mm long. Corolla yellowish or greenish; tube 1.5-4 mm long; lobes oblong, reflexed, ca. 1.5 mm long. Stamens attached to distal part of corolla tube. Anther connective not elongated or projecting. Drupe black, ellipsoid or obovoid, 1.5-3 x 0.7-1.5 cm, x=23.

Species list

• Chengiodendron marginatum (Champ. ex Benth.) C. B. Shang, X. R. Wang, Yi F. Duan & Yong F. Li
• Chengiodendron matusumuranum (Hayata) C. B. Shang, X. R. Wang, Yi F. Duan & Yong F. Li
• Chengiodendron minor (P. S. Green) C. B. Shang, X. R. Wang, Yi F. Duan & Yong F. Li
• (Cartrema scortechinii (King & Gamble) J. I. de Juana, not treated by Li et al. (2020) but should most likely also be tranferred to Chengiodendron)
• (Cartrema sumatrana (P. S. Green) J. I. de Juana, not treated by Li et al. (2020) but should most likely also be tranferred to Chengiodendron)

References

• de Juana, J. I. 2015. Cambios nomenclaturales en la sección Leiolea (Spach) P. S. Green, del género Osmanthus Lour. (Oleaceae). Bouteloua 22: 28-39.
• Li Y-F, Zhang M, Wang X-R, Sylvester SP, Xiang Q-B, Li X, Li M, Zhu H, Zhang C, Chen L, Yi XG, Mao L-F, Duan Y-F. 2020. Revisiting the phylogeny and taxonomy of Osmanthus (Oleaceae) including description of the new genus Chengiodendron. Phytotaxa 436: 283­292.

Maintained by Eva Wallander | Last updated: 2022-01-07