Polypodium
| Polypodium | |
|---|---|
.jpg)
| |
| Common polypody, Polypodium vulgare | |
Scientific classification 
| |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Division: | Polypodiophyta |
| Class: | Polypodiopsida |
| Order: | Polypodiales |
| Suborder: | Polypodiineae |
| Family: | Polypodiaceae |
| Subfamily: | Polypodioideae |
| Genus: | Polypodium L. |
| Species | |
Polypodium is a genus of
tropics. The name is derived from Ancient Greek poly (πολύ) "many" + podion (πόδιον) "little foot", on account of the foot-like appearance of the rhizome
and its branches. They are commonly called polypodies or rockcap ferns, but for many species unique vernacular names exist.
They are
sporangia
) are borne on the back of the frond; they are globose and naked, not covered with a membrane (indusium).
Polypodies have some use in
herbalism, but are today most important in horticulture where several species, hybrids, and their cultivars like Polypodium 'Green Wave' are commonly used as ornamental plants for shady locations. Polypodium have a bitter-sweet taste and are among the rather few ferns that are used in cooking; in this case as a spice e.g. for nougat
.
Species
Several of the species form hybrids with other species in the genus; these may often be distinguished by being sterile, with very small "blind" sori. As of February 2020[update], Checklist of Ferns and Lycophytes of the World accepted the following species and hybrids:[2]
- Polypodium abitaguae Hook.
- Polypodium aequale Maxon
- Polypodium alavae A.R.Sm.
- Polypodium amorphum Suksd.
- Polypodium appalachianum Haufler & Windham
- Polypodium arcanum Maxon
- Polypodium × aztecum Windham & Yatsk.
- Polypodium californicum Kaulf.
- Polypodium calirhiza S.A.Whitmore & A.R.Sm.
- Polypodium cambricum L.
- Polypodium castaneum Maxon ex Tejero
- Polypodium chionolepis Sodiro
- Polypodium chirripoense Lellinger
- Polypodium christensenii Maxon
- Polypodium colpodes Kunze
- Polypodium conterminans Liebm.
- Polypodium diplotrichum Mickel & Beitel
- Polypodium eatonii Baker
- Polypodium echinolepis Fée
- Polypodium × encumeadense (Neuroth, Jäger & Bennert) F.J.Rumsey, Carine & Robba
- Polypodium ensiforme Thunb.
- Polypodium eperopeutes Mickel & Beitel
- Polypodium exsul Mett. ex Kuhn
- Polypodium fauriei Christ
- Polypodium fissidens Maxon
- Polypodium flagellare Christ
- Polypodium × font-queri Rothm.
- Polypodium fraternum Schltdl. & Cham.
- Polypodium glycyrrhiza D.C.Eaton
- Polypodium haitiense Urb.
- Polypodium × hemipinnatum (Tejero, Mickel & A.R.Sm.) comb. ined.
- Polypodium hesperium Maxon
- Polypodium hispidulum Bartlett
- Polypodium × huancayanum G.Kunkel
- Polypodium × incognitum Cusick
- Polypodium interjectum Shivas
- Polypodium iranicum Mazooji
- Polypodium kamelinii Shmakov
- Polypodium khasyanum Hook.
- Polypodium longipetiolatum Brade
- Polypodium macaronesicum Bobrov
- Polypodium × mantoniae Rothm.
- Polypodium martensii Mett.
- Polypodium moricandii Mett.
- Polypodium moritzianum Link
- Polypodium otites L.
- Polypodium oxylepis C.Chr.
- Polypodium pellucidum Kaulf.
- Polypodium pellucidum Kaulf. f. opacum (Hillebr.) D.D.Palmer
- Polypodium pinnatissimum R.C.Moran
- Polypodium plectolepidioides Rosenst.
- Polypodium plesiosorum Kunze
- Polypodium pleurosorum Kunze ex Mett.
- Polypodium praetermissum Mickel & Tejero
- Polypodium puberulum Schltdl. & Cham.
- Polypodium rhodopleuron Kunze
- Polypodium riograndense Lindm.
- Polypodium × rothmaleri Shivas
- Polypodium ryanii Kaulf.
- Polypodium saximontanum Windham
- Polypodium × schneideri G.Schneid.
- Polypodium scouleri Hook. & Grev.
- Polypodium sibiricum Sipliv.
- Polypodium subpetiolatum Hook.
- Polypodium trinidadense Jenman
- Polypodium ursipes Moritz ex C.Chr.
- Polypodium × vianei Shmakov
- Polypodium virginianum L.
- Polypodium vulgare L.
A number of species formerly included in the genus have recently been transferred to other genera, including Campyloneurum, Cyathea, Microgramma, Nephrolepis, Pecluma, Phlebodium, Pleopeltis and Serpocaulon. Species placed elsewhere include:
- Polypodium argyrolepis = Serpocaulon lasiopus
- Polypodium mindense = Serpocaulon eleutherophlebium
- Polypodium mixtum = Pleopeltis murora
- Polypodium piligerum = Moranopteris achilleifolia
- Polypodium punctatum Thunb. ex Murray = Hypolepis punctata
- Polypodium quitense = Pecluma dulcis
- Polypodium rimbachii = Serpocaulon sessilifolium
- Polypodium scutulatum = Serpocaulon fraxinifolium
References
- S2CID 39980610.
- ^ Hassler, Michael & Schmitt, Bernd (January 2020). "Pleopeltis". Checklist of Ferns and Lycophytes of the World. Version 8.20. Retrieved 2020-02-15.
- Haufler, Christopher H.; Windham, Michael D.; Lang, Frank A. & Whitmore, S.A. (1993): 2. Polypodium Linnaeus. In: ISBN 0195082427
- Hyde, H.A.; Wade, A.E. & Harrison, S.G. (1978): Welsh Ferns. National Museum of Wales.
- Royal Botanic Garden Edinburgh (RBGE) (2007): Digital Flora Europaea: Polypodium species list. Retrieved 2007-NOV-26.
- United States Department of Agriculture (USDA) (2007a): Germplasm Resources Information Network - Polypodium. Retrieved 2007-NOV-26.
External links
- . Encyclopædia Britannica (11th ed.). 1911.
