Physostegia virginiana, the obedient plant, obedience or false dragonhead,[2] 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.[2]Physostegia are known commonly as obedient plants because a flower pushed to one side will often stay in that position.[3] The name “false dragonhead” refers to the dragonheads of the related Dracocephalum,[3] a genus to which the plant once belonged.[1]
It is a rhizomatousherbaceousperennial producing clumps of stiff, squared stems 2–4 ft (0.61–1.22 m) tall. The leaves are lanceolate and toothed. The inflorescence is a long, dense raceme containing many tubular pink flowers which resemble snapdragons. The open fruit is shaped like a vase and contains four triangular, black seeds.
Physostegia virginiana ssp. praemorsa - Widespread farther south, to Texas and New Mexico.[4] It has larger flowers, with sterile bracts below the inflorescence, and lacks rhizomes. It is typically found in dry upland sites such as prairies and glades.[5][6]
Physostegia virginiana ssp. virginiana - Found farther north and west.[4] It has smaller flowers that lack sterile bracts. It is patch-forming from rhizomes. It is typically found in wetter habitats, such as streambanks and bottomlands.[5][6]
Cultivars of P. virginiana often do not fit well into either of the two varieties and are intermediate in characters. They are thought to have originated from hybridization between the two subspecies.[5][6]
Subspecies virginiana has a smaller flower that lacks sterile bracts
Cultivationedit
Seeds of Physostegia
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.[3]
physostegia, virginiana, obedient, plant, obedience, false, dragonhead, species, flowering, plant, mint, family, lamiaceae, native, north, america, where, distributed, from, eastern, canada, northern, mexico, physostegia, known, commonly, obedient, plants, bec. Physostegia virginiana the obedient plant obedience or false dragonhead 2 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 2 Physostegia are known commonly as obedient plants because a flower pushed to one side will often stay in that position 3 The name false dragonhead refers to the dragonheads of the related Dracocephalum 3 a genus to which the plant once belonged 1 Physostegia virginiana Conservation status Secure NatureServe 1 Scientific classification Kingdom Plantae Clade Tracheophytes Clade Angiosperms Clade Eudicots Clade Asterids Order Lamiales Family Lamiaceae Genus Physostegia Species P virginiana Binomial name Physostegia virginiana L Benth Contents 1 Description 2 Taxonomy 3 Cultivation 3 1 Cultivars 4 References 5 External linksDescription editIt is a rhizomatous herbaceous perennial producing clumps of stiff squared stems 2 4 ft 0 61 1 22 m tall The leaves are lanceolate and toothed The inflorescence is a long dense raceme containing many tubular pink flowers which resemble snapdragons The open fruit is shaped like a vase and contains four triangular black seeds Taxonomy editThere are two recognized subspecies They are Physostegia virginiana ssp praemorsa Widespread farther south to Texas and New Mexico 4 It has larger flowers with sterile bracts below the inflorescence and lacks rhizomes It is typically found in dry upland sites such as prairies and glades 5 6 Physostegia virginiana ssp virginiana Found farther north and west 4 It has smaller flowers that lack sterile bracts It is patch forming from rhizomes It is typically found in wetter habitats such as streambanks and bottomlands 5 6 Cultivars of P virginiana often do not fit well into either of the two varieties and are intermediate in characters They are thought to have originated from hybridization between the two subspecies 5 6 nbsp Subspecies virginiana has a smaller flower that lacks sterile bractsCultivation edit nbsp Seeds of Physostegia 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 3 Cultivars edit Several cultivars have been bred for color variety 7 Some agm have earned the Royal Horticultural Society s Award of Garden Merit 8 Cultivars include Alba white flowers Crown of Snow white flowers Pink Bouquet rose pink flowers Rosea pink flowers Rosy Spire lavender pink flowers Summer Snow agm 9 pure white flowers Variegata pink flowers green and white variegated leaves Vivid agm 10 bright pink flowersReferences edit nbsp Wikispecies has information related to Physostegia virginiana nbsp Wikimedia Commons has media related to Physostegia virginiana a b Physostegia virginiana NatureServe 2012 a b Physostegia virginiana Germplasm Resources Information Network Agricultural Research Service United States Department of Agriculture Retrieved 14 January 2018 a b c Physostegia virginiana Missouri Botanical Garden a b Physostegia virginiana USDA PLANTS a b c Yatskievych George 2013 Flora of Missouri Volume 3 Missouri Botanical Garden Press p 356 a b c Alan Weakley 2015 Flora of the Southern and Mid Atlantic States Physostegia virginiana Archived 2010 07 29 at the Wayback Machine Michigan State University Extension AGM Plants Ornamental PDF Royal Horticultural Society July 2017 p 78 Retrieved 25 April 2018 RHS Plant Selector Physostegia virginiana Summer Snow Retrieved 6 February 2021 RHS Plant Selector Physostegia virginiana Vivid Retrieved 6 February 2021 External links editPhysostegia virginiana L Benth ITIS Physostegia virginiana Floridata Retrieved from https en wikipedia org w index php title Physostegia virginiana amp oldid 1160264499, wikipedia, wiki, book, books, library,
