|Phryma leptostachya var. asiatica|
Phryma leptostachya, or lopseed, is a perennial herb. The genus is native to eastern North America (roughly, everywhere east of the Rocky Mountains) and Asia (Japan, Nepal, India and West Pakistan), and consists of either one or two species, depending on whether the American and Asian species are considered separate or not.
Although it has sometimes been classified in the family Verbenaceae, 21st century research has placed it in a small family (Phrymaceae) along with Mimulus (monkey flowers) and a small number of other genera which had formerly been in the Scrophulariaceae.
- "Phryma leptostachya". Robert W. Freckmann Herbarium, University of Wisconsin - Stevens Point. Retrieved 2008-01-08.
- "Phryma leptostachya". PLANTS. Retrieved 2008-01-08.
- "Phryma leptostachya". Flora of Pakistan. Retrieved 2008-01-08.
- Olmstead, R. G. (2003). "Whatever happened to the Scrophulariaceae?" (PDF). Fremontia. 30–2: 13–22. Page 22.
- "Phryma leptostachya". Lady Bird Johnson Wildflower Center Native Plant Database. Retrieved 2008-01-08.
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