| Name | Arabis pycnocarpa M. Hopkins |
| Authorship | M. Hopkins |
| Rank | Species |
| NomenclaturalStatus | NomLeg |
| Placed in | Arabis Adanson |
| Contains | Arabis pycnocarpa var. adpressipilis M. Hopkins Arabis pycnocarpa var. reducta M. Hopkins |
| GUID | urn:lsid:ipni.org:names:278547-1 |
| Citation | 1937 Rhodora 39: 112 |
| Holdings | 89 Specimens held in the Harvard University Herbaria identified as Arabis pycnocarpa M. Hopkins |
| Identification made in | [no date] (83), 1935 (4), 2004 (1), 2010 (1) |