| Title | An Illustrated Flora of the Northern United States, edition 2 / Britton & Brown |
| Abbreviation | Ill. Fl. N. U.S. [Britton & Brown], ed. 2. |
| Authors | N. L. Britton: A. Brown |
| Publication Dates | 3 vols., all 7 Jun 1913 |
| TL2 | 778 |
| Remarks | Important source of lectotypifications of generic names, but the choices not always in accordance with the ICBN |