Galium richardianum (Gillies ex Hook. & Arn.) Endl. ex Walp. [ Relbunium richardianum (Gillies ex Hook. & Arn.) Hicken]
      
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6 451590 Galium richardianum (Gillies ex Hook. & Arn.) Endl. ex Walp. [125 889318 Rubia richardiana Gillies ex Hook. & Arn.] Rubiaceae
Ann. Missouri Bot. Gard., vol. 98 : p. 210, fig. 1G (2011) [A. Peixoto]