Lingzhi ( Ganoderma sichuanense), also known as reishi, is a polypore fungus ("bracket fungus") native to East Asia belonging to the genus Ganoderma.
Its reddish brown, varnished, kidney-shaped cap with bands and peripherally inserted stem give it a distinct hand fan-like appearance. When fresh, the lingzhi is soft, cork-like, and flat. It lacks gills on its underside, and instead releases its spores via fine pores (80–120 μm) in yellow colors.
In nature, it grows at the base and stumps of , especially . Only two or three out of 10,000 such trees will have lingzhi growth, and therefore its wild form is rare. Lingzhi may be cultivated on hardwood logs, sawdust, or woodchips.
The lingzhi mushroom is used in traditional Chinese medicine.
In the scientific literature, the lingzhi mushroom is ambiguously referred to as:
One source employed to solve the task of identifying the traditional lingzhi mushroom is the 16th century Chinese herbal compendium, the (1578). There, a number of different lingzhi-like mushrooms defined by color were used for different purposes. No exact current species can be attached to these ancient lingzhi for certain, but according to Dai et al. (2017), as well as other researchers, and based on molecular work, red lingzhi is most likely to be Ganoderma sichuanense.
Ganoderma sichuanense is the most widely found species in Chinese herb shops today, and the fruiting bodies are widely cultivated in China and shipped to many other countries. About 7–10 other Ganoderma species are also sold in some shops, but have different Chinese and Latin names, and are considered different in their activity and functions. The differences are based on concentrations of triterpenes such as ganoderic acid and its derivatives, which vary widely among species. Research on the genus is ongoing, but a number of recent phylogenetic analyses have been published in recent years.
The lingzhi's have Greek and Latin roots. Ganoderma derives from the Ancient Greek (γανος; ), and (δερμα; ).
Environmental conditions play a substantial role in the lingzhi's manifest morphological characteristics. For example, elevated carbon dioxide levels result in stem in lingzhi. Other formations include antlers without a cap, which may also be related to carbon dioxide levels. The three main factors that influence fruit body development morphology are light, temperature, and humidity. While water and air quality play a role in fruit body development morphology, they do so to a lesser degree.
In the wild, lingzhi grows at the base and stumps of deciduous trees, especially . Only two or three out of 10,000 such aged trees will have lingzhi growth, and therefore it is extremely rare in its natural form. Today, lingzhi is effectively cultivated on hardwood logs or sawdust/woodchips.
Since ancient times, Taoist temples were called "the abode of mushrooms" and according to their mystical teachings, the use of woody mushrooms (Ganoderma) or "spirits mushroom", in particular making from it a concentrated decoction of action, gave followers the opportunity to see spirits or become spirits themselves by receiving the magical energy of the immortals , located on the "fields of grace" in the heavenly "mushroom fields" ().Китай: колокольца в пыли. Странствия мага и интеллектуала// М.: Алетейа, 2005. — 376 с. — ISBN 5-98639-025-3 — С. 74, 356, 367.
In the philosophical work , it is said that the lingzhi mushroom is personification of nobility; from which shamans brewed a psychedelic drink.Философы из Хуайнани. Хуайнаньцзы / Пер. Л. Е. Померанцевой. Сост. И. В. Ушаков // М: Мысль, 2004. — 430 с. — — С. 267. « Шаманок (Ушань) — гора в пров. Сычуань. Из гриба цзычжи (другое название — линчжи) мудрецы делали дурманящий напиток. О дереве гаося аналогичных сведений как будто нет. Комментарий говорит, что это высокое дерево с плотной шелковистой древесиной белого цвета и что гаося и цзычжи символы благородства, а чернобыльники и полынь — символы ничтожества.» — С. 50: «На горе Шаманок послушны ветру и покорны огню как дерево гаося и гриб цзычжи, так и чернобыльник и полынь все погибают вместе.»Поздние даосы о природе, обществе и искусстве («Хуайнаньцзы» — II в. до н. э.) / Померанцева Л. Е. // М.: Издательство Московского университета, 1979. — 240 с. — С. 145, 220.
The ( Divine Farmer's Classic of Pharmaceutics) of classifies into six color categories, each of which is believed to benefit the , or "life force", in a different part of the body: (青芝; ) for the liver, (赤芝; ) for the heart, (黃芝; ) for the spleen, (白芝; ) for the lungs, (黑芝; ) for the kidneys, and (紫芝; ) for the Essence. Commentators identify the red , or (丹芝; ), as the lingzhi.
In the Taoist treatise of from Ge Hong, the lingzhi is used for immortality. Li Bo Unkempt / Kidder Smith, Mike Zhai // Punctum Books, 2021. — ; . — pp. 137, 405. / Lu Di // «East Asian Science, Technology, and Medicine», № 37 (2013)/2014: 36-68. Traditional uses, chemical components and pharmacological activities of the genus Ganoderma P. Karst.: a review / Li Wang, Jie-qing Li, Ji Zhang, Zhi-min Li,b Hong-gao Liu, Yuan-zhong Wang // RSC Advances: Issue 69, 2020.
The (1596) ( Compendium of Materia Medica) has a (芝) category that includes six types of (calling the green, red, yellow, white, black, and purple mushrooms of the the liuzhi (六芝; "six mushrooms") and sixteen other fungi, mushrooms, and lichens, including mu'er (木耳; "wood ear"; "cloud ear fungus", Auricularia auricula-judae). The author Li Shizhen classified these six differently colored zhi as xiancao (仙草; "immortality herbs"), and described the effects of chizhi ("red mushroom"):
Chinese herbology describes the zhi.
The Bencao Gangmu does not list lingzhi as a variety of zhi, but as an alternate name for the shi'er (石耳; "stone ear", Umbilicaria esculenta) lichen. According to Stuart and Smith,
In Chinese art, the lingzhi symbolizes great health and longevity, as depicted in the imperial Forbidden City and Summer Palace. It was a Amulet for luck in the traditional culture of China, and the goddess of healing Guanyin is sometimes depicted holding a lingzhi mushroom.
Lingzhi has several synonyms. Of these, (瑞草; "auspicious plant") ( 瑞; "auspicious; felicitous omen" with the suffix 草; "plant; herb") is the oldest; the Erya dictionary (c. 3rd century BCE) defines 苬, interpreted as a of (菌; "mushroom") as (芝; "mushroom"), and the commentary of Guo Pu (276–324) says, "The zhi flowers three times in one year. It is a ruicao felicitous plant." Other Chinese names for Ganoderma include (瑞芝; "auspicious mushroom"), (神芝; "divine mushroom", with shen; "spirit; god' supernatural; divine"), (木靈芝) (with "tree; wood"), (仙草; "immortality plant", with xian; "(Daoism) transcendent; immortal; wizard"), and (靈芝草) or (芝草; "mushroom plant").
Since both Chinese ling and zhi have multiple meanings, lingzhi has diverse English translations. Renditions include "zhi possessed of soul power", "Herb of Spiritual Potency" or "Mushroom of Immortality", "Numinous Mushroom", "divine mushroom", "divine fungus", "Magic Fungus", and "Marvelous Fungus".
The Oxford English Dictionary (OED) gives the definition, "The fungus Ganoderma lucidum (actually Ganoderma lingzhi (see Ganoderma lucidum for details), believed in China to confer longevity and used as a symbol of this on Chinese ceramic ware.", and identifies the etymology of the word as Chinese: líng, "divine" + zhī, "fungus". According to the OED, the earliest recorded usage of the Wade–Giles romanization ling chih is 1904, (Victoria and Albert Museum); This context describes the lingzhi fungus and ruyi scepter as Daoist symbols of longevity on a jade vase. and of the Pinyin lingzhi is 1980.
In addition to the transliterated loanwords, English names include "glossy ganoderma" and "shiny polyporus".
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