Dennstaedtia Explained
Dennstaedtia is a mostly tropical and subtropical group of ferns described as a genus in 1801.[1] [2] [3] Hayscented fern, or cup ferns,[4] are common names for some species in this genus. It includes 58 species native to the tropical Americas, Madagascar, southern and eastern Asia, Australia, New Guinea, and the Pacific Islands.
Some characteristics of Dennstaedtia: "Fronds homomorphic; stipe grooved above, hairy when young... lamina triangular to oblong, many times pinnate, usually densely hairy, especially on rachis... Veins free, pinnately branching, veinlet not reaching margin, with hydathode at apex. Sori orbicular, marginal, terminal on each veinlet, separate..."[5]
The temperate North-American hay-scented fern, Sitobolium punctilobulum, was formerly classified in Dennstaedtia and may have been its best-known member. It forms extensive clonal ground-cover colonies on level surfaces in the Appalachian area.[6]
Species
Species include:
- D. ampla
- D. anthriscifolia
- D. antillensis
- D. appendiculata
- D. arborescens
- D. arcuata
- D. articulata
- D. auriculata
- D. axilaris
- D. bipinnata
- D. canaliculata
- †D. christophelii (Ypresian, NW North America)[7]
- D. cicutaria
- D. cornuta
- D. davallioides
- D. dennstaedtioides
- D. dissecta
- D. distenta
- D. elmeri
- D. flaccida
- D. fusca
- D. glabrata
- D. glauca
- D. globulifera
- D. hirsuta
- D. hooveri
- D. inermis
- D. macgregori
- D. macrosora
- D. madagascariensis
- D. magnifica
- D. mathewsii
- D. merrillii
- D. novoguineensis
- D. obtusifolia
- D. parksii
- D. paucirrhiza
- D. penicillifera
- D. philippinensis
- D. producta
- D. remota
- D. rectangularis
- D. resinifera
- D. riparia
- D. rufidula
- D. samoensis
- D. scandens
- D. shawii
- D. smithii
- D. spinosa
- D. sprucei
- D. sumatrana
- D. terminalis
- D. tryoniana
- D. vagans
- D. werckleana
- D. wercklei
- D. wilfordii
- D. williamsii
- D. zeylanica
External links
Notes and References
- Bernhardi, Johann Jakob. 1801. Journal für die Botanik 1800(2): 124
- http://www.tropicos.org/Name/40023778 Tropicos, Dennstaedtia Bernh.
- Web site: 碗蕨属 DennstaedtiaiPlant 植物智——植物物种信息系统 . www.iplant.cn . 30 July 2022.
- Barbara . Joe . Cup Ferns (Dennstaedtia) Cultivated in California . American Fern Journal . 55 . 2 . June 1965 . 58–62 . 1546136. 10.2307/1546136.
- Web site: 碗蕨属 DennstaedtiaiPlant 植物智——植物物种信息系统 . www.iplant.cn . 30 July 2022.
- https://powo.science.kew.org/taxon/urn:lsid:ipni.org:names:17222380-1 Sitobolium punctilobulum (Michx.) Desv.
- Pigg . K. B. . DeVore . M. L. . Greenwood . D. R. . Sundue . M. A. . Schwartsburd . P. . Basinger . J. F. . 2021 . Fossil Dennstaedtiaceae and Hymenophyllaceae from the Early Eocene of the Pacific Northwest . International Journal of Plant Sciences . 182 . 9 . 793–807 . 10.1086/715633 . 239036762 .
