2-540: Physostegia , the lionshearts or false dragonheads (in reference to their similarity to Dracocephalum ), is a genus of flowering plants in the family Lamiaceae , native to North America (United States, Canada, northern Mexico). They are erect rhizomatous herbaceous perennials inhabiting damp, sunny places. They grow up to 2 m (7 ft) tall with purple or pink tubular flowers in racemes in summer. The generic name comes from two Greek words, physa (a bladder) and stege (a covering), referring to
4-592: The calyx , which becomes full of fruit when mature. Physostegia virginiana is the most common species, and is known as "obedient plant". Dracocephalum Dracocephalum is a genus of flowering plants in the family Lamiaceae , native to temperate regions of the Northern Hemisphere . These flowers, collectively called dragonhead , are annual or perennial herbaceous plants or subshrubs , growing to 15 to 90 centimeters tall. The genus has 89 species as currently circumscribed, which includes
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