S. & Semir, ?Monogr. Syst. Bot. Missouri Bot. Gard. 104: 346 (-348; fig. 3). 2005 [10 Jun 2005] ; Festschr. William G. DArcy (ed. R.?, 2005.

S. & Semir, ?Monogr. Syst. Bot. Missouri Bot. Gard. 104: 344 (-346; fig. 2). 2005 [10 Jun 2005] ; Festschr. William G. DArcy (ed. R.?, 2005.