''Platycerium'' is a genus of about 18

fern The ferns (Polypodiopsida or Polypodiophyta) are a group of vascular plants (plants with xylem and phloem) that reproduce via spores and have neither seeds nor flowers. They differ from mosses by being vascular, i.e., having specialized tissue ...

species in the polypod family,

Polypodiaceae Polypodiaceae is a Family (biology), family of ferns. In the Pteridophyte Phylogeny Group classification of 2016 (PPG I), the family includes around 65 genus, genera and an estimated 1,650 species and is placed in the order Polypodiales, suborder ...

. Ferns in this genus are widely known as staghorn or elkhorn ferns due to their uniquely shaped

frond A frond is a large, divided leaf. In both common usage and botanical nomenclature, the leaves of ferns are referred to as fronds and some botanists restrict the term to this group. Other botanists allow the term frond to also apply to the lar ...

s. This genus is

epiphytic An epiphyte is a plant or plant-like organism that grows on the surface of another plant and derives its moisture and nutrients from the air, rain, water (in marine environments) or from debris accumulating around it. The plants on which epiphyt ...

and is native to

tropical The tropics are the regions of Earth surrounding the equator, where the sun may shine directly overhead. This contrasts with the temperate or polar regions of Earth, where the Sun can never be directly overhead. This is because of Earth's ax ...

and temperate areas of

South America South America is a continent entirely in the Western Hemisphere and mostly in the Southern Hemisphere, with a considerably smaller portion in the Northern Hemisphere. It can also be described as the southern Subregion#Americas, subregion o ...

Africa Africa is the world's second-largest and second-most populous continent after Asia. At about 30.3 million km2 (11.7 million square miles) including adjacent islands, it covers 20% of Earth's land area and 6% of its total surfac ...

Southeast Asia Southeast Asia is the geographical United Nations geoscheme for Asia#South-eastern Asia, southeastern region of Asia, consisting of the regions that are situated south of China, east of the Indian subcontinent, and northwest of the Mainland Au ...

Australia Australia, officially the Commonwealth of Australia, is a country comprising mainland Australia, the mainland of the Australia (continent), Australian continent, the island of Tasmania and list of islands of Australia, numerous smaller isl ...

, and

New Guinea New Guinea (; Hiri Motu: ''Niu Gini''; , fossilized , also known as Papua or historically ) is the List of islands by area, world's second-largest island, with an area of . Located in Melanesia in the southwestern Pacific Ocean, the island is ...

Description

''Platycerium''

sporophyte A sporophyte () is one of the two alternation of generations, alternating multicellular organism, multicellular phases in the biological life cycle, life cycles of plants and algae. It is a diploid multicellular organism which produces asexual Spo ...

s (adult plants) have tufted roots, growing from a short rhizome, and bear two types of fronds - basal and fertile fronds. Basal fronds are sterile, shield- or kidney-shaped, and laminate against the tree, to protect the fern's roots from damage and desiccation. In some ''Platycerium'' species, the top margin of these fronds will grow into an open crown of lobes; catching rainwater, falling forest litter, bird/animal droppings, and even an occasional fallen deceased animal, these plants build up their own “

compost Compost is a mixture of ingredients used as plant fertilizer and to improve soil's physical, chemical, and biological properties. It is commonly prepared by Decomposition, decomposing plant and food waste, recycling organic materials, and man ...

” system of nutrition over many years. Fertile fronds bear spores on their undersurface, are

dichotomous A dichotomy () is a partition of a set, partition of a whole (or a set) into two parts (subsets). In other words, this couple of parts must be * jointly exhaustive: everything must belong to one part or the other, and * mutually exclusive: nothi ...

or antler-shaped, and jut out or hang from the rhizome. The spores are borne in

sporangia A sporangium (from Late Latin, ; : sporangia) is an enclosure in which spores are formed. It can be composed of a unicellular organism, single cell or can be multicellular organism, multicellular. Virtually all plants, fungus, fungi, and many ot ...

, clustered in large sori that are usually positioned on the tips of the lobes, on a specialized stalked lobe (as in ''P. ridleyi'' and ''P. coronarium''), or at the sinus between frond lobes. Some species of ''Platycerium'' are solitary, having only one rhizome. Other species form colonies when their rhizomes branch, or when new rhizomes are formed from root tips. If the conditions are right, the spores will germinate naturally, on surrounding trees. A ''Platycerium''

gametophyte A gametophyte () is one of the two alternating multicellular phases in the life cycles of plants and algae. It is a haploid multicellular organism that develops from a haploid spore that has one set of chromosomes. The gametophyte is the se ...

is a small, heart-shaped

thallus Thallus (: thalli), from Latinized Greek (), meaning "a green shoot" or "twig", is the vegetative tissue of some organisms in diverse groups such as algae, fungi, some liverworts, lichens, and the Myxogastria. A thallus usually names the entir ...

. ''Platycerium'' have diverged into four natural groups. Several ''Platycerium'' are strongly adapted to

xeric Deserts and xeric shrublands are a biome defined by the World Wide Fund for Nature. Deserts and xeric (Ancient Greek 'dry') shrublands form the largest terrestrial biome, covering 19% of Earth's land surface area. Ecoregions in this habita ...

conditions, with a naturally drought-tolerant metabolism method having been reported for ''P. veitchii''.

Species

Cultivation

The species '' Platycerium bifurcatum'' and '' Platycerium superbum'' are commonly cultivated as

ornamental plant Ornamental plants or ''garden plants'' are plants that are primarily grown for their beauty but also for qualities such as scent or how they shape physical space. Many flowering plants and garden varieties tend to be specially bred cultivars th ...

s. These oddly shaped ferns grow on trees and rocks and can be found in

gardens A garden is a planned space, usually outdoors, set aside for the cultivation, display, and enjoyment of plants and other forms of nature. The single feature identifying even the wildest wild garden is ''control''. The garden can incorporate bot ...

, especially

tropical garden A tropical garden is a type of garden that features tropical plants and requires heavy rainfall or a decent irrigation or sprinkler system for watering. These gardens typically need fertilizer and heavy mulching. Tropical gardens are no longe ...

s. Staghorns can be propagated by

spores In biology, a spore is a unit of sexual (in fungi) or asexual reproduction that may be adapted for dispersal and for survival, often for extended periods of time, in unfavourable conditions. Spores form part of the life cycles of many plant ...

produced on the underside of the fertile fronds. Colonial ''Platycerium'' can also be vegetatively propagated by carefully dividing large healthy ones into smaller, separate plants. These new plants can then be attached to board mounts or be strapped to trees until they take to the tree themselves. A mature staghorn can grow more than wide.

Gallery

File:Gardenology.org-IMG 2429 rbgs11jan.jpg, '' Platycerium superbum'' at the Royal Botanic Gardens Sydney,

File:Simbar menjangan.jpg, '' Platycerium bifurcatum'' from the Mendut Temple,

Indonesia Indonesia, officially the Republic of Indonesia, is a country in Southeast Asia and Oceania, between the Indian Ocean, Indian and Pacific Ocean, Pacific oceans. Comprising over List of islands of Indonesia, 17,000 islands, including Sumatra, ...

File:Staghorn Fern (Platycerium coronarium) (8752670563).jpg, '' Platycerium coronarium'' from

Pahang {{Infobox political division , name = Pahang , official_name = Pahang Darul Makmur , native_name = , settlement_type = States and federal territories of Malaysia, State , image_skyline = , imagesize ...

Malaysia Malaysia is a country in Southeast Asia. Featuring the Tanjung Piai, southernmost point of continental Eurasia, it is a federation, federal constitutional monarchy consisting of States and federal territories of Malaysia, 13 states and thre ...

File:Platycerium grande from Bukidnon, Philippines.jpg, '' Platycerium grande'' from

Bukidnon Bukidnon (), officially the Province of Bukidnon (; ; ; Bukid language, Binukid and Higaonon language, Higaonon: ''Probinsya ta Bukidnon''), is a landlocked Provinces of the Philippines, province in the Philippines located in the Northern Mindan ...

Philippines The Philippines, officially the Republic of the Philippines, is an Archipelagic state, archipelagic country in Southeast Asia. Located in the western Pacific Ocean, it consists of List of islands of the Philippines, 7,641 islands, with a tot ...

File:Platycerium elephantotis - Leveäsarvisaniainen, (Älghornsbräken) IMG 3432 C.JPG, '' Platycerium elephantotis'' at Kaisaniemi Botanical Garden,

Finland Finland, officially the Republic of Finland, is a Nordic country in Northern Europe. It borders Sweden to the northwest, Norway to the north, and Russia to the east, with the Gulf of Bothnia to the west and the Gulf of Finland to the south, ...

References

* {{Authority control Epiphytes Pantropical flora Garden plants of Asia Garden plants of Africa Garden plants of Australia Garden plants of South America Fern genera Taxa named by Nicaise Auguste Desvaux