All Species in Metastelma
- Arizona Swallow-Wort (Metastelma arizonicum)
- Bearded Swallow-Wort (Metastelma barbigerum)
- Blodgett's Swallow-Wort (Metastelma blodgettii)
- Caribbean Swallow-Wort (Metastelma anegadense)
- Fragrant Swallow-Wort (Metastelma bahamense)
- Mona Island Swallow-Wort (Metastelma monense)
- Pringle's Swallow-Wort (Metastelma pringlei)
- Smallflower Swallow-Wort (Metastelma parviflorum)
- Wiggins' Swallow-Wort (Metastelma mexicanum)