Polypodiaceae

Polypodiaceae
Pleopeltis polypodioides fronds on an oak limb
Scientific classification
Kingdom:	Plantae
Division:	Pteridophyta
Class:	Polypodiopsida/Pteridopsida (disputed)
Order:	Polypodiales
(unranked):	Eupolypods
(unranked):	Eupolypods I
Family:	Polypodiaceae
Subfamilies/Tribes/Clades
Platycerioideae Polypodioideae Drynarieae Selligueeae Lepisoreae Microsoreae Polypodieae Loxogrammeae Grammitids
Synonyms
Drynariaceae Grammitidaceae Gymnogrammitidaceae Loxogrammaceae Platyceriaceae Pleurisoriopsidaceae

Polypodiaceae is a family of polypod ferns, which includes more than 60 genera divided into several tribes and containing around 1,000 species. Nearly all are epiphytes, but some are terrestrial.^[1]

Description

Stems of Polypodiaceae range from erect to long-creeping. The fronds are entire, pinnatifid, or variously forked or pinnate. The petioles lack stipules. The scaly rhizomes are generally creeping in nature. Polypodiaceae species are found in wet climates, most commonly in rain forests. In temperate zones, most species tend to be epiphytic or epipetric.^[1]

Notable examples of ferns in this family include the resurrection fern (Pleopeltis polypodioides) and the golden serpent fern (Phlebodium aureum).^[1]

Classification

Polypodiaceae is usually divided into the following subfamilies and tribes. Some are classified by other authorities as separate families.^[2]

• Subfamily Platycerioideae - Fronds with stellate (radiating from central point) hairs. Example genera: Platycerium, Pyrrosia
• Subfamily Polypodioideae - Possess scales and/or hairs. Never stellate.

• Tribe Drynarieae - Fronds are dimorphic. Example genera: Drynaria, Aglaomorpha
• Tribe Selligueeae - Characterized by opaque stem scales. Fronds are monomorphic. Example genus: Selliguea
• Tribe Lepisoreae - Clathrate (lattice-like) scales. Thick exospore. Fronds monomorphic. Example genera: Belvisia, Lepisorus
• Tribe Microsoreae - Clathrate scales. Thin exospore. Fronds monomorphic. Example genera: Lecanopteris, Microsorum
• Tribe Polypodieae - Mostly clathrate scales, but somtimes opaque. Thick exospores, but sometimes thin. Fronds monomorphic. Example genera: Polypodium, Pecluma
• Tribe Loxogrammeae - Lacks sclerenchyma (supporting tissue) in plant body, except in the roots. Example genus: Loxogramme

Selected genera

Acrosorus Adenophorus Aglaomorpha - includes Holostachyum, Merinthosorus, Photinopteris, Pseudodrynaria Arthromeris Belvisia Calymmodon Campyloneurum - formerly included in Polypodium Caobangia Ceradenia Christiopteris Chrysogrammitis Cochlidium Colysis Ctenopteris Dicranoglossum Dictymia Drymotaenium Drynaria Enterosora Goniophlebium Grammitis Gymnogrammitis Kaulinia Kontumia Lecanopteris Lellingeria Lemmaphyllum Lepisorus Leptochilus - includes Platygyria Leucotrichum Lomaria Loxogramme - includes Anarthropteris Luisma Marginariopsis

Melpomene Microgramma - includes Solanopteris, formerly included in Polypodium Microphlebodium Micropolypodium Microsorum Myrmecophila Neocheiropteris - includes Neolepisorus Neurodium - formerly included in Polypodium Niphidium Pecluma - formerly included in Polypodium Phlebodium - formerly included in Polypodium Phymatodes Phymatosorus - sometimes included in Polypodium Platycerium Pleopeltis - formerly included in Polypodium Pleopodium Pleurosoriopsis Podosorus Polypodiodes Polypodium Prosaptia Pseudocolysis Pyrrosia - includes Drymoglossum Scleroglossum Selliguea - includes Crypsinus, Polypodiopteris Serpocaulon Solanopteris Synammia Terpsichore Themelium Thylacopteris Zygophlebia

See also

• List of foliage plant diseases (Polypodiaceae)

References

1. ^ ^{a b c} G. Panigrahi and S.N. Patnaik (1961), Cytology of Some Genera of Polypodiaceae in Eastern India, Nature 191, 1207 - 1208.
2. ^ D. J. Mabberley (2008). Mabberley's plant-book: a portable dictionary of plants, their classification and uses. Cambridge University Press. p. 690. ISBN 9780521820714. http://books.google.com.ph/books?id=9RyKKHtwXUYC&lpg=PP1&hl=en&pg=PA690#v=onepage&q&f=false. 

External links

• Polypodiaceae (Polypody family)