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Filipendula rubra

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Filipendula rubra
Filipendula rubra Inflorescence [1]
Scientific classification Edit this classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Rosids
Order: Rosales
Family: Rosaceae
Genus: Filipendula
Species:
F. rubra
Binomial name
Filipendula rubra
Synonyms[2]
  • Filipendula lobata (Gronov. ex Jacq.) Maxim.
  • Spiraea lobata Gronov. ex Jacq.
  • Spiraea palmata L.
  • Spiraea rubra (Hill) Britton
  • Thecanisia angustifolia Raf.
  • Thecanisia lobata (Gronov. ex Jacq.) Raf.
  • Thecanisia purpurea Raf.
  • Ulmaria lobata Kostel. ex Maxim.
  • Ulmaria rubra Hill

Filipendula rubra, also known as queen-of-the-prairie, is a species of flowering plant in the family Rosaceae native to the northeastern and central United States and southeastern Canada.[3] It prefers full sun or partial shade and moist soil, but tolerates drier soil in a shadier location. It grows tall and firm, and produces blooms that are tiny and pink above its ferny, pointy leaves.[4]

Of the numerous garden cultivars, 'Venusta' has gained the Royal Horticultural Society's Award of Garden Merit.[5][6]

Distribution and habitat

The species is native from Pennsylvania westward to Illinois, and north of Georgia.[7] However, F. rubra is fairly successful as an alien species in places such as Massachusetts, where it was first recorded in 1875 and is still found.[8] In many places where it is native, such as Indiana, and places where it is alien as well, F. rubra is a threatened species.[9]

The typical habitat of F. rubra is wetland plant communities, particularly calcareous fens, although it is occasionally found in spring seeps and wet prairies. Populations are generally small and widely separated from one another as a result of the rarity and smallness of calcareous fens.[10]

Description

The plant is a spreading herbaceous perennial growing to 1.8–2.5 m (5 ft 11 in – 8 ft 2 in) tall by 1.2 m (3 ft 11 in) wide. With large lobed leaves and branching red stems, it produces corymbs of deep pink or peach, sweet fragrant flowers in the summer.[11] Inflorescences of F. rubra are panicles possessing 200-1,000 small pink-petaled flowers on 1–2 m stems can have somewhere to 5,000 seeds.[10] The numerous stamens give the flower a fuzzy appearance.[12] Each flower has carpels that are free from one another, while also having five to 15 pistils. However, these seeds are small due to the large size of its clones yet when seeds are produced seedlings may fail to establish in large numbers.[13] The plant grows in an aggressive manner with its creeping roots. The foliage texture of the plant is coarse and the color ranges from a medium to dark green.[4]

Filipendula rubra is a perennial which grows up to 2.5 m (8 ft) by 1.3 m (4 ft 3in) at a medium rate. It is hardy to zone (UK) 2. It is in flower from July to August, and the seeds ripen from August to September. The species is hermaphrodite (has both male and female organs) and is self-fertile. The plant is pollinated by bees, flies, and beetles. The plant attracts wildlife.

Pollination

Filipendula rubra is known for its air-borne pollen, however pollination is only effective (can create a seed) when pollen is transferred to a different plant, due to the fact that F. rubra is self-incompatible. The vast majority of pollen will be derived from inflorescences within the same clone and thus incompatible. Pollination is aided by insects such as sweat bees spreading pollen.[10]

Conservation

Filipendula rubra is considered an endangered species by the USDA Natural Resources Conservation Service in Illinois, Maryland, New Jersey, North Carolina and it is considered threatened in Iowa and Michigan.[14]

Causes for endangerment

Although Filipendula rubra is considered an endangered species by the USDA in several of the states that it is native to, it is not caused by animals who eat the plant, or any diseases that may infect a plant.[15] Rather, F. rubra is considered endangered or threatened because of its trouble pollinating. The process the plant has to go through in order to pollinate is more difficult than that of regular plants due to its inability to fertilize itself (explained further in the section above about pollination).[10] F. rubra is further endangered by habitat loss throughout much of its native distribution.

Uses

Native Americans have used the root of F. rubra in traditional medicine for treating heart problems and as an aphrodisiac.[16] The root has a high tannin content, making it useful as an astringent for treating diarrhea, dysentery, and bleeding.[17]

The plant is used in gardens for the aesthetically pleasing and fragrant flowers which smell like lilac. A good number of both native and conventional nurseries sell some, yet it is still an uncommon plant in most American gardens and landscapes. 'Venusta' is the most common cultivar that bears a good bright rose-pink color. It grows in full sun or part-shade and needs moist to draining wet soil; it suffers from drought. It sends up its sort of maple-like foliage early in spring. It spreads by rhizomes, underground stems, so it becomes a spreading clump that eventually becomes a mass. It is easy to dig up and reset like many perennials when it gets too big and crowded or spreads to much. It does self-sow some to a lot in gardens. If it starts to look poorly from drought, one can easily prune it down and it will grow back some to look better.

Although aesthetically appealing for humans, F. rubra, based on current knowledge of the plant's floral and faunal associations, offers comparatively little value to wildlife.[18] For instance, it is not a host plant for butterflies and native moths nor does it produce any nectar. Its magenta flowers are the color that typically draws butterflies but they will expend energy to get to the flowers and find no nectar. It competes for continually shrinking, due to human development, wetland acreage with plants that support more wildlife. Additionally, its seeds are not an important food source for birds or rodents. Herbivores do not find its foliage appealing. Its flowers are a source of food for insects that consume pollen. However, some sources say the plant mainly uses wind pollination, a pollination strategy that typically makes comparatively little pollen available for pollen-consuming insects. As a result, some conservationists suggest using this plant in aesthetics-oriented gardens but focusing more on other species for restoration work.

References

  1. ^ Cirrus Digital: Queen of the Prairie - Filipendula rubra
  2. ^ "Filipendula rubra (Hill) B.L.Rob.". Royal Botanic Gardens Edinburgh – via The Plant List. Note that this website has been superseded by World Flora Online
  3. ^ Schanzer, Ivan A. (2014). "Filipendula rubra". In Flora of North America Editorial Committee (ed.). Flora of North America North of Mexico (FNA). Vol. 9. New York and Oxford: Oxford University Press – via eFloras.org, Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.
  4. ^ a b Explore Cornell - Home Gardening - Flower Growing Guides - Growing Guide." Explore Cornell - Home Gardening - Flower Growing Guides. N.p., 2006. Web. 23 Oct. 2013.
  5. ^ "Filipendula rubra 'Venusta' AGM". RHS Gardening. Royal Horticultural Society. Retrieved 4 July 2020.
  6. ^ "AGM Plants - Ornamental" (PDF). Royal Horticultural Society. July 2017. p. 39. Retrieved 27 February 2018.
  7. ^ Burrell, C. Colston (June–July 1995). "Queen of the Prairie". Horticulture. 73: 88.
  8. ^ Sorrie, Bruce A. (Summer 2005). "Alien Vascular Plants In Massachusetts". Rhodora. 107 (931): 284–329. doi:10.3119/0035-4902(2005)107[0284:AVPIM]2.0.CO;2. S2CID 86074714.
  9. ^ Ruch, D. G.; Torke, B. G.; Hess, B. R.; Badger, K. S.; Rothrock, P. E. (2009). "The vascular flora and plant communities of the bennett wetland complex in Henry County, Indiana". Proceedings of the Indiana Academy of Science. 118 (1): 39–54. ProQuest 746163087.
  10. ^ a b c d Aspinwall, Nevin; Terry Christian (1992). "Pollination biology, seed production, and population structure in Queen-of-the-Prairie, Filipendula rubra (Rosaceae) at Botkin Fen, Missouri". American Journal of Botany. 79 (5): 488–494. doi:10.1002/j.1537-2197.1992.tb14583.x. JSTOR 2444858.
  11. ^ RHS A-Z encyclopedia of garden plants. United Kingdom: Dorling Kindersley. 2008. p. 1136. ISBN 978-1405332965.
  12. ^ "Filipendula rubra". Native Plant Database. Lady Bird Johnson Wildflower Center, University of Texas at Austin.
  13. ^ Dickinson, T.A.; Lo, E.; Talent, N. (2007). "Polyploidy, Reproductive Biology, and Rosaceae: Understanding Evolution and Making Classifications". Plant Systematics and Evolution. 266 (1–2): 59–78. doi:10.1007/s00606-007-0541-2. S2CID 4826942.
  14. ^ USDA, NRCS (n.d.). "​Filipendula rubra​". The PLANTS Database (plants.usda.gov). Greensboro, North Carolina: National Plant Data Team.
  15. ^ "Filipendula rubra". Plant Finder. Missouri Botanical Garden.
  16. ^ Filipendula rubra (queen of the prairie), Royal Botanic Gardens, Kew, retrieved 4 September 2015
  17. ^ "Filipendula rubra". Plants for a Future.
  18. ^ Hilty, John (2020). "Queen-of-the-Prairie (Filipendula rubra)". Illinois Wildflowers. Retrieved 18 February 2018.
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