Swertia perennis subsp. covillei (Greene) A.E.Murray
, Kalmia 12: 25 (1982).
External links to taxonomic opinions:
- IPNI Life Sciences Identifier (LSID)
- urn:lsid:ipni.org:names:246877-2
- Publication
- Kalmia; Botanic Journal. Levittown, Philadelphia, PA
- Collation
- 12: 25
- Family as entered in IPNI
- Gentianaceae