BioStor
Taenidia integerrima (L.) Drude
 | Muhlenberg on plants collected in the District of Columbia region about 1809 W L Mcatee (1922) Proceedings of The Biological Society of Washington 35: 63-71 |
 | Additional notes on the genus Verbena. IV H N Moldenke (1968) Phytologia 15: 478-495 |
 | 1St Flowering Dates For Spring blooming Plants Of The Washington, Dc, Area For The Years 1970 To 1983 S G Shetler and S K Wiser (1987) Proceedings of The Biological Society of Washington 100: 993-1017 |