and , ?Natuurk. Tijschr. Ned. Indie 80(1): 24, 28. 1920.?, 1920.

 and , ?Elem. Bot. (Necker) 2: 60. 1790 ; nom. invalid.  Published in opera utiq. oppr.  See ICBN (2006), App. VI: 483?, 1790.

 and , ?Ann. Mag. Nat. Hist. ser. 2, 5(25): 32. 1850 [Jan 1850]?, 1850.