Sericostachys Gilg & Lopr. ex Lopr., 1900

Iamonico, Duilio, 2018, Generic typifications in Amarathaceae s. str., Phytotaxa 350 (2), pp. 147-154 : 151

Sericostachys Gilg & Lopr. ex Lopr.

Lopriore (1900: 50 ‒ 52) listed two species, Sericostachys scandens Lopriore (1900: 51) , and S. tomentosa Lopriore (1900: 51) (syntypes), as members of the new proposed genus Sericostachys Lopriore (1900: 50) . Some authros (e.g., SANBI 2012d) consider these two species as the only members of the genus, while others (e.g., Leistner 2005) accepted Sercostachys as monotypic genus with only S. scandens . Hence, I prefer to choice and designated the latter name as lectotype of the genus Sericostachys .

Lopriore (1900: 51) listed two collections: “Kamerum: Yaúnde, Bongolloberg (ZENKER n. 1420); Buea (LEHMBACH n. 140)”. According to the Art. 9.5, all the specimens bearing labels with these data are to be considered as syntypes. I found six specimens at K, L, P (two specimens), S, and WAG each one bearing a plant collected by G.A. Zenker in Cameroon (locality: Yaoundé), in 1897 ; the collection number is 1420 in all the six sheets. A further specimen is preserved at B, and it was collected in Cameroon by H. Lehmbach (collection number: 140). All these seven specimens appear complete, comprising both leaves and inflorescences. However, the S specimen is better preserved, and I designate it here as the lectotype of the name Sericostachys scandens . The other four Zenker’s specimens (at K, L, P, and WAG) are isolectotypes .