Molecular Biology and Genetics
Statistics of barcoding coverage
Specimens with Sequences:16
Specimens with Barcodes:15
Species With Barcodes:4
Physostegia 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.
Physostegia virginiana is the most common species, and is known as "obedient plant".
- Physostegia angustifolia Fernald - lower Mississippi Valley, southern Great Plains
- Physostegia correllii (Lundell) Shinners - Texas, northern Mexico
- Physostegia digitalis Small - Texas, Louisiana, Arkansas, Alabama
- Physostegia godfreyi P.D.Cantino - Florida Panhandle
- Physostegia intermedia (Nutt.) Engelm. & A.Gray - lower Mississippi Valley, southern Great Plains
- Physostegia ledinghamii (B.Boivin) P.D.Cantino - Northwest Territories, Alberta, Saskatchewan, Manitoba, North Dakota
- Physostegia leptophylla Small - Southeast from Florida to Virginia
- Physostegia longisepala P.D.Cantino - Texas, Louisiana
- Physostegia parviflora Nutt. ex A.Gray - western Canada (Manitoba to British Columbia), northwestern + north-central United States (Illinois to Washington)
- Physostegia pulchella Lundell - eastern Texas
- Physostegia purpurea (Walter) S.F.Blake - Southeast from Florida to North Carolina
- Physostegia virginiana (L.) Benth. - much of eastern + central US + Canada; northeastern Mexico
- Kew World Checklist of Selected Plant Families
- Biota of North America Program, 2013 county distribution maps
- RHS A-Z encyclopedia of garden plants. United Kingdom: Dorling Kindersley. 2008. p. 1136. ISBN 1-4053-3296-4.
- Coombes, Allen J. (2012). The A to Z of plant names. USA: Timber Press. p. 312. ISBN 978-1-60469-196-2.
Physostegia virginiana (obedient plant, obedience, or false dragonhead) is a species of flowering plant in the mint family, Lamiaceae. It is native to North America, where it is distributed from eastern Canada to northern Mexico. Physostegia are known commonly as obedient plants because a flower pushed to one side will often stay in that position. The name false dragonhead refers to the dragonheads of the related Dracocephalum, a genus to which the plant once belonged.
Description[edit source | edit]
It is a rhizomatous perennial herb producing clumps of stiff, squared stems 2 to 4 feet tall. The leaves are lance-shaped and toothed. It has long, dense spikes of lipped, pinkish, "snapdragon-like" flowers in the summer.
Cultivation[edit source | edit]
It is considered a good plant for adding late-season flowers to a garden. Fertile soils produce robust growth and wide spreading, and the plant may require staking. When it grows tall it has a "tendency toward floppiness" that can be controlled with pruning. It can be aggressive and dominate a landscape.
Cultivars[edit source | edit]
- 'Alba' - white flowers.
- 'Crown of Snow' - white flowers
- 'Pink Bouquet' - rose pink flowers
- 'Rosea' - pink flowers
- 'Rosy Spire' - lavender-pink flowers
- 'Summer Snow' (agm) - pure white flowers
- 'Variegata' - pink flowers, green and white variegated leaves
- 'Vivid' (agm) - bright pink flowers
References[edit source | edit]
|Wikispecies has information related to: Physostegia virginiana|
|Wikimedia Commons has media related to: Physostegia virginiana|
- Physostegia virginiana. Germplasm Resources Information Network (GRIN).
- Physostegia virginiana. Missouri Botanical Garden.
- Physostegia virginiana. NatureServe. 2012.
- Physostegia virginiana. USDA PLANTS.
- Physostegia virginiana. Michigan State University Extension.
- "RHS Plant Selector - Physostegia virginiana 'Summer Snow'". Retrieved 26 May 2013.
- "RHS Plant Selector - Physostegia virginiana 'Vivid'". Retrieved 26 May 2013.
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