V. H. & Müll.Arg., ?Observ. Bot.  128. 1871.?, 1871.

V. H. & Müll.Arg., ?Observat. Bot. Decr. Pl. 2: 133. 1871?, 1871.

V. H. & Müll.Arg., ?Observ. Bot. 126. 1871.?, 1871.