| Name | Ceanothus griseus var. horizontalis McMinn |
| Authorship | McMinn |
| Rank | Variety |
| Placed in | Ceanothus griseus (Trelease) McMinn |
| GUID | urn:lsid:ipni.org:names:50699-2 |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Ceanothus griseus var. horizontalis McMinn |
| Identification made in | [no date] (1) |
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