homotypic synonyms:
Asclepias alpina species Vell.;
protologue: Bol. Mus. Bot. Munic. 61: 2 (1984)
12 734515 Oxypetalum alpinum (Vell.) Fontella & E.A.Schwarz [80 734743 Oxypetalum umbellatum Gardner]
F.C. Hoehne, Monogr. Asclep. Bras., vol. 1 (Oxypetalum): t. 1, fig. 3 (1916) [F.C. Hoehne]
Asclepias alpina species Vell.;
protologue: Bol. Mus. Bot. Munic. 61: 2 (1984)
12 734515 Oxypetalum alpinum (Vell.) Fontella & E.A.Schwarz [80 734743 Oxypetalum umbellatum Gardner]F.C. Hoehne, Monogr. Asclep. Bras., vol. 1 (Oxypetalum): t. 1, fig. 3 (1916) [F.C. Hoehne]