Contains 3 accepted taxa overall.
Characteristics
Classification
Citation
PHYSOSTEGIA Bentham, Edwards's Bot. Reg. 15: sub t. 1289. 1829.
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TYPE: Physostegia virginiana (Linnaeus) Bentham (Dracocephalum virginianum Linnaeus) Lectotypified by Cantino, Contr. Gray Herb. 211: 56. 1962.
Species
| Scientific Name | Common Name | Herbarium Specimens | Status | Photos |
|---|---|---|---|---|
| Physostegia leptophylla | Tidal Marsh Obedient-plant, Swamp Obedient-plant | |||
| Physostegia purpurea | Savanna Obedient-plant | |||
| Physostegia virginiana ssp. praemorsa | Southern Obedient-plant |
Identification Key
1. Leaf blade sharply serrate, the apex acute or acute-acuminate
1. Leaf blade entire, undulate, crenate, to subtly denticulate, the apex rounded, obtuse, to bluntly acute
2
2. Calyx and inflorescence axis minutely stipitate-glandular and with nonglandular trichomes; nutlets 1.7-2.2 mm long, the surface usually warty
2. Calyx and inflorescence axis puberulent, eglandular; nutlets 2-3.6 mm long, surface smooth
3
3. Leaves only gradually reduced distally, the larger leaves typically in the middle ⅓ of the stem when flowering, uppermost pair of leaves usually much larger than the floral bracts
3. Leaves strongly reduced distally, the larger leaves in the basal ⅓ of the stem, uppermost pair of leaves often subequal to the floral bracts
Genus Synonyms
| Synonym | Full Citation | Basionym | Type |
|---|---|---|---|
| No synonyms found. | |||