Description from Flora of China
Paramanglietia Hu & W. C. Cheng; Sinomanglietia Z. X. Yu & Q. Y. Zheng.
Trees, evergreen or rarely deciduous (only Manglietia decidua). Stipules adnate to petiole, leaving long or short scar on petiole. Leaves folded in bud; leaf blade leathery, margin entire. Flowers terminal or terminal on terminal brachyblasts, bisexual. Tepals usually 9-13, 3 per whorl, greenish or red, subequal, subleathery but 3 of outer whorl usually thinner. Filaments short and inconspicuous; connective exserted and mucronate; anthers linear, dehiscing introrsely. Gynoecium sessile; carpels numerous, spirally arranged, distinct, abaxially usually with 1 or several furrows at base, adaxially completely connate to torus; ovules 4 or more per carpel. Fruit apocarpous, globose, ovoid, terete, or ellipsoid-ovoid; torus not elongated between carpels; mature carpels subwoody or thickly woody, persistent, dehiscing along dorsal suture or sometimes also along ventral suture, apex usually beaked. Seeds 1 to more than 10 per fruit.
Manglietia fadouensis Y. W. Law & R. Z. Zhou, M. guangnanica D. X. Li & R. Z. Zhou, M. pingjiangensis Y. W. Law & D. X. Li, M. microflora Y. W. Law & R. Z. Zhou, and M. tianchiensis D. X. Li & Y. W. Law (in Y. H. Liu, Magnolias China, 136, 148, 186, 198. 2004) are of uncertain identity and are probably the same as already published Manglietia species but were not validly published because no Latin descriptions or diagnoses were provided and no types were indicated (Vienna Code, Art. 36.1 and 37.1).
About 40 species: tropical and subtropical Asia; 29 or 27 species (17 or 15 endemic) in China.