Polystichum tsus-simense | |
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Scientific classification | |
Kingdom: | Plantae |
Clade: | Tracheophytes |
Division: | Polypodiophyta |
Class: | Polypodiopsida |
Order: | Polypodiales |
Suborder: | Polypodiineae |
Family: | Dryopteridaceae |
Genus: | Polystichum |
Species: | P. tsus-simense |
Binomial name | |
Polystichum tsus-simense (Hook.) J.Sm. | |
Polystichum tsus-simense, commonly known as the Korean rock fern, is a perennial herbaceous plant native to East Asia. Its common name corresponds with its ability to grow in shady areas of rock walls. This fern species is a familiar ornamental plant grown in home gardens.
The geographic origin of P. tsus-simense is the East Asian countries, such as China, Korea, Japan, Thailand, and the Indochina region. [1] The specific epithet tsus-simense (often written as tsussimense) refers to Tsushima Island. [2] Although it is not native to the United States, the Korean rock fern has been introduced to the country through Florida and Louisiana. [1]
Polystichum tsus-simense flourishes in shady areas with partial to no sun exposure in fertile and well-drained soil with high moisture. [3] It can grow in acid, alkaline, and neutral soil, in part shade or full sun. [4] It inhabits slopes and rocky places of forests and shores of streams. It can also grow in indoor pots and in shady areas of a garden. It has a clump-forming habit with many basal shoots forming open groups or clusters. [3]
Individuals of P. tsus-simense are herbaceous with no persistent woody stem above ground. A mature plant can range from 20 to 50 cm tall and approximately 40 cm wide with evergreen foliage. As vascular land plants, they contain four or more bundles in an arc. They have dark green bipinnate fronds, which include crenate blades with pinnate venation within the pinnately arranged fronds. Black veins run through the glossy lanceolate blades. The grooved stipe of the plant is blackish brown with rhizome-like scales at the base. The rhizome is short and erect with broadly lanceolate scales. It is brown in color with blackish central portions. [1]
Polystichum tsus-simense uses spores to propagate. As an early vascular plant, a fern is not able to reproduce through seeds. Wind plays a major role in the dispersal mechanism of the spores. The Korean rock ferns sow their spores in the summer, and divide in the spring. [3] The sporangia, dark brown vessels, contain spores, and are grouped into round clusters called sori. The sori are aligned in a row between the margin and the midrib, and are covered with a peltate indusium. [1]
Polystichum tsus-simense is mainly used as an ornamental plant, for both indoors and outdoors. It has gained the Royal Horticultural Society's Award of Garden Merit. [4] [5]
With little sunlight required, it is a suitable candidate for a potted plant indoors, on a deck, or the porch. The contrast of the dark stems with the green fronds makes this an attractive adornment in homes. The plant's ability to stay green throughout the year contributes to its value to a gardener. [3] It is also commonly offered as a house gift in certain Asian cultures.
Nephrolepis exaltata, known as the sword fern or Boston fern, is a species of fern in the family Lomariopsidaceae. It is native to the Americas. This evergreen plant can reach as high as 40–90 centimetres (16–35 in), and in extreme cases up to 1.5 metres. It is also known as the Boston sword fern, wild Boston fern, Boston Blue Bell Fern, tuber ladder fern, or fishbone fern.
Polystichum munitum, the western swordfern, is an evergreen perennial fern native to western North America, where it is one of the most abundant ferns in forested areas. It occurs along the Pacific coast from southeastern Alaska to southern California, and also inland east to southeastern British Columbia, northern Idaho and western Montana, with disjunctive populations in northern British Columbia, Canada; the Black Hills in South Dakota, United States; and Guadalupe Island off of Baja California, Mexico. Western swordfern is known to have locally naturalized in parts of Great Britain and Ireland.
Dryopteris filix-mas, the male fern, is a common fern of the temperate Northern Hemisphere, native to much of Europe, Asia, and North America. It favours damp shaded areas in the understory of woodlands, but also shady places on hedge-banks, rocks, and screes. Near the northern limit of its distribution it prefers sunny, well-drained sites. It is much less abundant in North America than in Europe. The plant is sometimes referred to in ancient literature as worm fern, reflecting its former use against tapeworm.
Gymnocarpium dryopteris, the western oakfern, common oak fern, oak fern, or northern oak fern, is a deciduous fern of the family Cystopteridaceae. It is widespread across much of North America and Eurasia. It has been found in Canada, the United States, Greenland, China, Japan, Korea, Russia, and most of Europe. It is a seedless, vascular plant that reproduces via spores and have a life cycle with alternating, free-living sporophyte and gametophyte phases.
Athyrium filix-femina, the lady fern or common lady-fern, is a large, feathery species of fern native to temperate Asia, Europe, North Africa, Canada and the US. It is often abundant in damp, shady woodland environments and is often grown for decoration.
Polystichum aculeatum, the hard shield-fern, is an evergreen fern native to Europe. It is most abundant in upland regions of the British Isles and western France, where it benefits from the combination of mild winters and moist summers, but also occurs more locally across most of Europe except northern Scandinavia, northern Russia; in the Mediterranean region it is confined to high altitudes. It grows on steep slopes in woodlands. it is sometimes considered an indicator of the presence of ancient woodlands.
Polystichum setiferum, the soft shield fern, is an evergreen or semi-evergreen fern native to southern and western Europe. The stalks and most midribs are coated with attractive cinnamon-brown scales. The Latin specific epithet setiferum means “with bristles”.
Dryopteris erythrosora, the autumn fern or Japanese shield fern, is a species of fern in the family Dryopteridaceae, native to east Asia from China and Japan south to the Philippines, growing in light woodland shade on low mountains or hills.
Athyrium niponicum, the Japanese painted fern, is a species of fern native to eastern Asia.
Polystichum acrostichoides, commonly denominated Christmas fern, is a perennial, evergreen fern native to eastern North America, from Nova Scotia west to Minnesota and south to Florida and eastern Texas. It is one of the most common ferns in eastern North America, being found in moist and shady habitats in woodlands, stream banks and rocky slopes. The common name derives from the evergreen fronds, which are often still green at Christmas.
Cyrtomium falcatum is a species of fern, commonly known as house holly-fern and Japanese holly fern, in the wood fern family Dryopteridaceae. It is native to eastern Asia.
Polypodium glycyrrhiza, commonly known as licorice fern, many-footed fern, and sweet root, is a summer deciduous fern native to western North America, where it is found in shaded, damp locations.
Polystichum lonchitis is a species of fern known by the common name northern hollyfern, or simply holly-fern. It is native to much of the Northern Hemisphere from Eurasia to Alaska to Greenland and south into mountainous central North America. It has stiff, glossy green, erect fronds and grows in moist, shady, rocky mountain habitats.
Polystichum proliferum, commonly known as mother shield fern is an Australian endemic fern. The genus name Polystichum is derived from Greek poly - many, and stichos - rows referring to the many rows of sori. The species name is derived from Latin, Proli – offspring and fer - bearing referring to the proliferous buds, a prominent feature of the species.
Diplazium australe, commonly known as the Austral lady fern, is a small fern occurring in eastern Australia, New Zealand and Norfolk Island. The habitat is moist shaded areas, often occurring in rainforest.
Adiantum viridimontanum, commonly known as Green Mountain maidenhair fern, is a fern found only in outcrops of serpentine rock in New England and Eastern Canada. The leaf blade is cut into finger-like segments, themselves once-divided, which are borne on the outer side of a curved, dark, glossy rachis. These finger-like segments are not individual leaves, but parts of a single compound leaf. The "fingers" may be drooping or erect, depending on whether the individual fern grows in shade or sunlight. Spores are borne under false indusia at the edge of the subdivisions of the leaf, a characteristic unique to the genus Adiantum.
Nephrolepis cordifolia, is a fern native to the global tropics, including northeastern Australia and Asia. It has many common names including fishbone fern, tuberous sword fern, tuber ladder fern, erect sword fern, narrow sword fern and ladder fern, and herringbone fern. It is similar to the related fern Nephrolepis exaltata.
Polypodium cambricum, the southern polypody, limestone polypody, or Welsh polypody, is a species of fern in the family Polypodiaceae, native to southern and western Europe where it grows on shady rocks, near the coasts of the Mediterranean Basin and in the mountains of Atlantic Europe. It is a spreading, terrestrial, deciduous fern growing to 60 centimetres (24 in) tall, with pinnate fronds. The sori are yellow in winter.
Dryopteris aemula, the hay-scented buckler-fern or hay-scented fern, is a species of perennial leptosporangiate fern.
Polystichum luctuosum is a species of fern known by the common names Korean rock fern and Tsushima holly fern. It is a small, clump-forming, tufted, evergreen to semi-evergreen fern native to Japan, Korea, Taiwan, China, Vietnam, and Thailand, as well as southern Africa. The fern grows to about 1–1.5 feet in height, with a spread of 1–1.5 feet, with stipe up to 30 cm long, pale to mid-brown, with dark brown to almost black scales, and bi-pinnate, glossy, dark green fronds.