A literature survey of internal oil secretion in Lamiaceae revealed that only Brazoria and Physostegia have greatly enlarged foliar mesophyll idioblasts. These have been regarded as specialized oil ...
The spectacular late-blooming obedient plant (Physostegia virginiana) is a white- or lilac-colored prairie native that occurs throughout eastern North America west to North Dakota and south to Texas, ...
When it comes to common plant names, you often can learn a lot about the plant and its appearance or behavior. But some plants, like the obedient plant (Physostegia virginiana), have names that do not ...
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