1. Diplachne fusca subsp. uninervia (J. Presl) (J. Presl) P.M. Peterson & N. Snow (syn.: Leptochloa fusca (L.) Kunth subsp. uninervia (J. Presl) N. Snow, Diplachne uninervia (J. Presl) Parodi) (Am.) – An exceptional and ephemeral grain alien. Recorded only once by a railway track in the port of Gent in 1998 (Verloove & Vandenberghe 1999).
Diplachne uninervia is rather easily distinguished from D. fascicularis and D. fusca s. str. in Belgium. However, on a global scale these taxa more or less overlap and have been accommodated in a collective taxon (D. fusca) by Snow (1998). Molecular data (e.g. Peterson & al. 2015) confirm that there are very few genetical differences between the subspecies of D. fusca.
References
Brummitt R.K. (1978) Report of the Committee for Spermatophyta 20: Proposal 415. 307 Leptochloa Beauvois (1812) (Gramineae) vs Rabdochloa Beauvois (1812).Taxon 27 (2/3): 285-289.
Peterson P.M., Romaschenko K. & Arrieta Y.H. (2015) A molecular phylogeny and classification of the Eleusininae with a new genus, Micrachne (Poaceae: Chloridoideae: Cynodonteae). Taxon 64(3): 445-467. [available online at: https://www.researchgate.net/publication/271851457_A_molecular_phylogeny_and_classification_of_the_Eleusininae_with_a_new_genus_Micrachne_%28Poaceae_Chloridoideae_Cynodonteae%29]
Snow N. (1998) Nomenclatural changes in Leptochloa P. Beau voissensulato (Poaceae, Chloridoideae). Novon 8: 77-80.
Snow N. & Symon B.K. (1998) Taxonomic status and Australian distribution of the weedy neotropical grass Leptochloafusca subsp. uninervia, with an updated key to Australian Leptochloa (Poaceae, Chloridoideae). Austrobaileya 5(2): 299-305.
Verloove F. & Vandenberghe C. (1999) Nieuwe en interessante voederadventieven voor de Belgische flora, hoofdzakelijk in 1998. Dumortiera 74: 23-32.