Tên Khoa học: Magnolia champacifolia J. E. Dandy ex F. GagnepainTên tiếng Anh: Tên tiếng Việt: Tên khác:
TYPUS. — Vietnam. Annam. Prov. Nhatrang, Nord de Ninh Hoa, versant sud-est du massif de la Mère et l’Enfànt, 1300 m ait., 17. V. 1923, Poilane 6472 (lecto-, P[P00203965]!; isolecto-, P[P00204036]).
M. champacifolia J. E. Dandy ex F. Gagnepain, sp. nov. in the section Gwillimia DC. was described as a new species in 1938 (Gagnepain 1938). However, this name was not validly published, because two things: the species type was not indicated; and the name of this new taxon was not accompanied by a Latin description or diagnosis or by a reference (art. 40.1 and 39.1 of the “International Code of Botanical Nomenclature” — ICBN; McNeil et al. 2012). For its formal use, the name is here validated and lectotypified with the two flowering specimens Poilane 6472. According to article 46.2, the authorship of the name M. champacifolia J. E. Dandy ex F. Gagnepain, sp. nov. is still to be attributed to J. E. Dandy and F. Gagnepain.
During a floristic survey in Phu Son slope, Lam Ha district, Lam Dong Provinces, southern Vietnam, in June 2013, the botanists found a small population of Magnolia growing sparsely scattered in broad-leaved forest between 1300 and 1500 m asl. Specimens of vegetative and reproductive material of Magnolia were collected. After having examined the specimens and consulted the relevant literature (Gagnepain 1938; Chun & Tsoong 1964; Xia et al. 2008), it was found as M. champacifolia J. E. Dandy ex F. Gagnepain, sp. nov. and Magnolia albosericea Chun & Tsoong in the section Gwillimia DC (Figlar & Nooteboom 2004) are very similar in certain characters, but differ by leaf blades narrowly ovate, glabrous, apex long acuminate, petiole c. 3 cm long, tepals short and glabrous, peduncle c. 3 cm long and densely papillate when young, as well as gynoecium glabrous. These features clearly suggest that the plant is the representative of a new species.