Vietnamosasa darlacensis Nguyen (1990: 221)

HAEVERMANS, Thomas, NGUYEN, Bich Loan, GURGAND, Jacques, HAEVERMANS, Agathe, DRANSFIELD, Soejatmi & DIEP, My Hanh, 2013, Clearing up Vietnamosasa (Poaceae, Bambusoideae): typification and nomenclature of a distinctive paleotropical bamboo genus, Phytotaxa 137 (1), pp. 57-60 : 58

Vietnamosasa darlacensis Nguyen (1990: 221) .

Type:— VIETNAM. Đắk Nông : Yok Don, 12°52’49”N, 107°48’01”E, 200 m elevation, 30 May 2012, My Hanh DIEP 285 (neotype here designated: P02280067 !; isoneotypes P02280069 !, P02280068 !, P02280066 !, P02280065 !, P02280064 !, P02280063 !; K!, KUN!, MO!, SING!, RUPP!, VNM!) .

Note:— The missing holotype citation is as follows: Vietnam. Darlac Province [actual Đắk L ắk + Đắk Nông provinces]: silva montana, 600-1500 m elevation, 4 September 1973, Nguyen Vu Can s.n. ( HNF [actual VNF, lost]). Original diagnosis: “Affinitas. A specie proxima V. ciliata (A.Camus) Nguyen paleis apice rotundatis differ.”

The original specimen cannot be located in the herbaria where it may have been transferred for original study by Mrs. Nguyen ( LE & HNF). We cannot exclude the possibility that the type is destroyed. No original reference specimen exists and no illustration of the taxon has ever been published. In order to ensure accurate application of the name, we decided to designate a neotype based on a new collection of the only taxon matching the protologue that was growing in the type locality. The scans of the specimen, as well as pictures of the plant taken in the field will be made available on Paris SONNERAT herbarium database (http:// coldb.mnhn.fr).