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''Iris speculatrix'' is a beardless
iris Iris most often refers to: *Iris (anatomy), part of the eye *Iris (mythology), a Greek goddess * ''Iris'' (plant), a genus of flowering plants *Iris (color), an ambiguous color term Iris or IRIS may also refer to: Arts and media Fictional enti ...
in the genus ''
Iris Iris most often refers to: *Iris (anatomy), part of the eye *Iris (mythology), a Greek goddess * ''Iris'' (plant), a genus of flowering plants *Iris (color), an ambiguous color term Iris or IRIS may also refer to: Arts and media Fictional enti ...
'', in the subgenus '' Limniris'' and in the series '' Chinenses'' of the genus. It is a
rhizomatous In botany and dendrology, a rhizome (; , ) is a modified subterranean plant stem that sends out roots and shoots from its nodes. Rhizomes are also called creeping rootstalks or just rootstalks. Rhizomes develop from axillary buds and grow hori ...
herbaceous Herbaceous plants are vascular plants that have no persistent woody stems above ground. This broad category of plants includes many perennials, and nearly all annuals and biennials. Definitions of "herb" and "herbaceous" The fourth edition of t ...
perennial A perennial plant or simply perennial is a plant that lives more than two years. The term ('' per-'' + '' -ennial'', "through the years") is often used to differentiate a plant from shorter-lived annuals and biennials. The term is also wide ...
, from Asia, found in China, Hong Kong and Taiwan. It has dark green, evergreen leaves, long slender stem and flowers in various blue shades, from violet, lilac, lavender, to light blue.


Description

Iris speculatrix has a creeping, thick, short brown rhizome. It has glossy, linear, lanceolate (grass-like), dark green leaves that are long wide. The leaves have a sheath-like covering of fibres near the rhizome, they also have veining, which is sometimes criss-crossed and they are sometimes considered
evergreen In botany, an evergreen is a plant which has foliage that remains green and functional through more than one growing season. This also pertains to plants that retain their foliage only in warm climates, and contrasts with deciduous plants, which ...
. It has long slender flowering stems of between tall. Normally within the range. These stems are the tallest of any species iris in the Chinenses Series. The stems have 1 – 2 leaves on the stem, and between 1 and 2 terminal (at the top of the stem) flowers, in spring and summer, between May, and June. It has 2 or 3 green, lanceolate (lance-like), long,
spathe In botany, a bract is a modified or specialized leaf, especially one associated with a reproductive structure such as a flower, inflorescence axis or cone scale. Bracts are usually different from foliage leaves. They may be smaller, larger, or of ...
s (leaves of the flower bud), are acuminate (end in a point). The flowers come in a range of blue shades, from violet, lilac, lavender, to light blue. They are between in diameter. Similar in size to '' Iris cristata''. It has 2 pairs of petals, 3 large
sepals A sepal () is a part of the flower of angiosperms (flowering plants). Usually green, sepals typically function as protection for the flower in bud, and often as support for the petals when in bloom., p. 106 The term ''sepalum'' was coined b ...
(outer petals), known as the 'falls' and 3 inner, smaller petals (or
tepals A tepal is one of the outer parts of a flower (collectively the perianth). The term is used when these parts cannot easily be classified as either sepals or petals. This may be because the parts of the perianth are undifferentiated (i.e. of very ...
, known as the 'standards'. The falls are spatulate (spoon-like), long and wide, with a distinctive white, central signal area, that is speckled with purple and also surrounded by a dark purple area. It also has a bright yellow or orange central crest. The standards (the same colour as the falls) are erect, oblanceolate, long and wide. It has long pedicel, 5 mm long perianth tube, under the tube is a solid beak. It has 1.2 cm stamens, white anthers, long and 0.5mm wide ovary and 2.5 cm long and 7 mm wide styles branches (that are a similar colour to the petals). After the iris has flowered, between July and August, it produces an ellipsoid, seed capsule, long and 2 cm in diameter. They have a long beak (or acute point) at the top. They also bend at a 90 degree angle (right angle) from the stem. Inside the capsule, are dark brown, angled seeds with an aril (like a pale brown wing).


Biochemistry

As most irises are
diploid Ploidy () is the number of complete sets of chromosomes in a cell, and hence the number of possible alleles for autosomal and pseudoautosomal genes. Sets of chromosomes refer to the number of maternal and paternal chromosome copies, respectively ...
, having two sets of
chromosomes A chromosome is a long DNA molecule with part or all of the genetic material of an organism. In most chromosomes the very long thin DNA fibers are coated with packaging proteins; in eukaryotic cells the most important of these proteins are ...
. This can be used to identify hybrids and classification of groupings.} It has had its chromosome count several times, 2n=44, Snoad in 1952; 2n=44, Lenz in 1959, 2n=44, Chimphamba in 1973; 2n=44, Mao & Xue in 1986.


Taxonomy

It is written as 小鸢尾 in
Chinese script Chinese characters () are logograms developed for the writing of Chinese. In addition, they have been adapted to write other East Asian languages, and remain a key component of the Japanese writing system where they are known as ''kanji' ...
and known as ''xiao yuan wei'' or ''xiao hua yuan wei'' in China. It has the common name of ''Small-flower Iris'' in China. or ''Hong Kong Iris'' (in
Hong Kong Hong Kong ( (US) or (UK); , ), officially the Hong Kong Special Administrative Region of the People's Republic of China ( abbr. Hong Kong SAR or HKSAR), is a city and special administrative region of China on the eastern Pearl River Delt ...
).David Dudgeon and Richard Corlett The Latin
specific epithet In taxonomy, binomial nomenclature ("two-term naming system"), also called nomenclature ("two-name naming system") or binary nomenclature, is a formal system of naming species of living things by giving each a name composed of two parts, bot ...
''speculatrix'' refers to the female Latin word 'to observe', or 'the woman who watches and observes, or 'female spy' or 'watcher', or, poetically "that looks towards the sea". It may refer the markings on the petals looking similar to pair of
spectacles Glasses, also known as eyeglasses or spectacles, are vision eyewear, with lenses (clear or tinted) mounted in a frame that holds them in front of a person's eyes, typically utilizing a bridge over the nose and hinged arms (known as temples o ...
. It was originally found in April, 1874, by a Chinese workman, employed by the botanical garden of Hong-Kong, on a hill facing the sea between
Victoria Peak Victoria Peak is a hill on the western half of Hong Kong Island. It is also known as Mount Austin, and locally as The Peak only generally. With an elevation of , it is the highest hill on Hong Kong Island, ranked 29 in terms of elevation in H ...
and Mount Davis, on Hong Kong island. Also found along the path of
Wilson Trail The Wilson Trail () is a long-distance footpath in Hong Kong, 63 km of which runs through Hong Kong country parks.Dragon's Back. It was first published and described by
Hance Hance is an English and French surname. Notable people with the surname include: * Benjamin Hance (born 2000), Australian Paralympic swimmer * Blake Hance (born 1996), American football player * Guy Hance (1933–2008), Belgian politician *Henry Fl ...
in the 'Journal Botanical' Vol.13 on page 196 in 1875. It was later published in 'The Gardeners' Chronicle' Vol.40 on page 36 on 8 July 1876 and by
John Gilbert Baker John Gilbert Baker (13 January 1834 – 16 August 1920) was an English botanist. His son was the botanist Edmund Gilbert Baker (1864–1949). Biography Baker was born in Guisborough in North Yorkshire, the son of John and Mary (née Gilber ...
in
Curtis's Botanical Magazine ''The Botanical Magazine; or Flower-Garden Displayed'', is an illustrated publication which began in 1787. The longest running botanical magazine, it is widely referred to by the subsequent name ''Curtis's Botanical Magazine''. Each of the issue ...
tab. 6306 in 1877. Then in the Journal of the 'Linnean Society of London' Vol.16 p143 in 1878, 'The Gardeners' Chronicle' Vol.87 page 396 on 23 June 1900 and 'Wild Flowers of Hong Kong' Vol.35 in 1977.James Cullen, Sabina G. Knees, H. Suzanne Cubey (Editors) It was previously placed in Section Lophiris because of a crest-like ridge in signal area, but Wu & Cutler ''Taxonomic, evolutionary and ecological implications of the leaf anatomy of rhizomatous Iris species'' in the Botanical Journal of the Linnean Society Vol. 90 page253 – 303 in 1985, showed that the iris should be within the Chinensis Series. Which was agreed by other authors. It was verified by
United States Department of Agriculture The United States Department of Agriculture (USDA) is the United States federal executive departments, federal executive department responsible for developing and executing federal laws related to farming, forestry, rural economic development, ...
Agricultural Research Service The Agricultural Research Service (ARS) is the principal in-house research agency of the United States Department of Agriculture (USDA). ARS is one of four agencies in USDA's Research, Education and Economics mission area. ARS is charged with ext ...
on 4 April 2003.


Distribution and habitat

''Iris speculatrix'' is
native Native may refer to: People * Jus soli, citizenship by right of birth * Indigenous peoples, peoples with a set of specific rights based on their historical ties to a particular territory ** Native Americans (disambiguation) In arts and entert ...
to
temperate In geography, the temperate climates of Earth occur in the middle latitudes (23.5° to 66.5° N/S of Equator), which span between the tropics and the polar regions of Earth. These zones generally have wider temperature ranges throughout t ...
areas of
Asia Asia (, ) is one of the world's most notable geographical regions, which is either considered a continent in its own right or a subcontinent of Eurasia, which shares the continental landmass of Afro-Eurasia with Africa. Asia covers an area ...
.


Range

It is found within many
Provinces of China The provincial level administrative divisions () are the highest-level administrative divisions of China. There are 34 such divisions claimed by the People's Republic of China, classified as 23 provinces (), five autonomous regions, four munici ...
, including;
Anhui Anhui , (; formerly romanized as Anhwei) is a landlocked province of the People's Republic of China, part of the East China region. Its provincial capital and largest city is Hefei. The province is located across the basins of the Yangtze River ...
,
Fujian Fujian (; alternately romanized as Fukien or Hokkien) is a province on the southeastern coast of China. Fujian is bordered by Zhejiang to the north, Jiangxi to the west, Guangdong to the south, and the Taiwan Strait to the east. Its capi ...
,
Guangdong Guangdong (, ), alternatively romanized as Canton or Kwangtung, is a coastal province in South China on the north shore of the South China Sea. The capital of the province is Guangzhou. With a population of 126.01 million (as of 2020) ...
,
Guangxi Guangxi (; ; Chinese postal romanization, alternately romanized as Kwanghsi; ; za, Gvangjsih, italics=yes), officially the Guangxi Zhuang Autonomous Region (GZAR), is an Autonomous regions of China, autonomous region of the People's Republic ...
,
Guizhou Guizhou (; formerly Kweichow) is a landlocked province in the southwest region of the People's Republic of China. Its capital and largest city is Guiyang, in the center of the province. Guizhou borders the autonomous region of Guangxi to t ...
,
Henan Henan (; or ; ; alternatively Honan) is a landlocked province of China, in the central part of the country. Henan is often referred to as Zhongyuan or Zhongzhou (), which literally means "central plain" or "midland", although the name is al ...
,
Hubei Hubei (; ; alternately Hupeh) is a landlocked province of the People's Republic of China, and is part of the Central China region. The name of the province means "north of the lake", referring to its position north of Dongting Lake. The prov ...
,
Hunan Hunan (, ; ) is a landlocked province of the People's Republic of China, part of the South Central China region. Located in the middle reaches of the Yangtze watershed, it borders the province-level divisions of Hubei to the north, Jiangxi to ...
,
Jiangsu Jiangsu (; ; pinyin: Jiāngsū, Postal romanization, alternatively romanized as Kiangsu or Chiangsu) is an Eastern China, eastern coastal Provinces of the People's Republic of China, province of the China, People's Republic of China. It is o ...
,
Jiangxi Jiangxi (; ; formerly romanized as Kiangsi or Chianghsi) is a landlocked province in the east of the People's Republic of China. Its major cities include Nanchang and Jiujiang. Spanning from the banks of the Yangtze river in the north int ...
,
Qinghai Qinghai (; alternately romanized as Tsinghai, Ch'inghai), also known as Kokonor, is a landlocked province in the northwest of the People's Republic of China. It is the fourth largest province of China by area and has the third smallest po ...
,
Shaanxi Shaanxi (alternatively Shensi, see #Name, § Name) is a landlocked Provinces of China, province of China. Officially part of Northwest China, it borders the province-level divisions of Shanxi (NE, E), Henan (E), Hubei (SE), Chongqing (S), Sichu ...
,
Shanxi Shanxi (; ; formerly romanised as Shansi) is a landlocked province of the People's Republic of China and is part of the North China region. The capital and largest city of the province is Taiyuan, while its next most populated prefecture-lev ...
,
Sichuan Sichuan (; zh, c=, labels=no, ; zh, p=Sìchuān; alternatively romanized as Szechuan or Szechwan; formerly also referred to as "West China" or "Western China" by Protestant missions) is a province in Southwest China occupying most of the ...
,
Xizang The Tibet Autonomous Region or Xizang Autonomous Region, often shortened to Tibet or Xizang, is a province-level autonomous region of the People's Republic of China in Southwest China. It was overlayed on the traditional Tibetan regions of Ü ...
,
Yunnan Yunnan , () is a landlocked Provinces of China, province in Southwest China, the southwest of the People's Republic of China. The province spans approximately and has a population of 48.3 million (as of 2018). The capital of the province is ...
and
Zhejiang Zhejiang ( or , ; , also romanized as Chekiang) is an eastern, coastal province of the People's Republic of China. Its capital and largest city is Hangzhou, and other notable cities include Ningbo and Wenzhou. Zhejiang is bordered by Jiang ...
. It is also found in Hong Kong (
Cape D'Aguilar Cape D'Aguilar () is a cape on Hong Kong Island, Hong Kong. The cape is on the southeastern end of D'Aguilar Peninsula. To its north are Shek O and D'Aguilar Peak. Name It is named after Major-General George Charles d'Aguilar. Geograp ...
,
Tai Tam Tai Tam or ''Tytam'' is an area in Southern District on Hong Kong Island, Hong Kong. Tai Tam means a ''big pool'' in the Chinese language which illustrates a triangular bay, namely Tai Tam Bay between Stanley Peninsula, D'Aguilar Peak ...
, Sunset Peak,
Po Toi Po Toi (commonly , originally ) is the main island of the Po Toi Islands and the southernmost island of Hong Kong, with an area of 3.69 km². Name It is said that the island used to produce dried seaweeds (), which were shaped like the catt ...
Island,
Shek O Shek O is an area of the south-eastern part of Hong Kong Island, in Hong Kong. It can refers to Shek O village or Shek O Peninsula or Shek O Headland. Administratively, they are part of Southern District. Geography The name "Shek O" literal ...
,
Stanley Stanley may refer to: Arts and entertainment Film and television * ''Stanley'' (1972 film), an American horror film * ''Stanley'' (1984 film), an Australian comedy * ''Stanley'' (1999 film), an animated short * ''Stanley'' (1956 TV series) ...
Lantao Island), and
Taiwan Taiwan, officially the Republic of China (ROC), is a country in East Asia, at the junction of the East and South China Seas in the northwestern Pacific Ocean, with the People's Republic of China (PRC) to the northwest, Japan to the nort ...
.


Habitat

It grows beside forest margins, in open grassy groves and beside roadsides, on mountain slopes. In Hong Kong, the species is also found growing on
Violet Hill "Violet Hill" is a song by British rock band Coldplay. It was written by all members of the band for their fourth album, ''Viva la Vida or Death and All His Friends'' (2008). Built around a repeating guitar sound, it utilises a marching tempo ...
among bamboo. It lives at altitudes of above sea level.


Conservation

Some rare and attractive species that are subject to exploitation are specifically listed in the Forestry Regulations, (under Forests and Countryside Ordinance) a subsidiary legislation of Chapter 96. which further controls the sale and possession of the listed species. It lists only ''Iris speculatrix''. It is protected from being over-collected for ornamental uses within the garden. It was classified as ''Least Concern (LC)'' on the
IUCN The International Union for Conservation of Nature (IUCN; officially International Union for Conservation of Nature and Natural Resources) is an international organization working in the field of nature conservation and sustainable use of natu ...
''Red List of Threatened Plants'' in China.


Cultivation

''Iris speculatrix'' is hardy to H5 (H5 means hardy down to 0 to −5° ,). It is hardy to
USDA The United States Department of Agriculture (USDA) is the federal executive department responsible for developing and executing federal laws related to farming, forestry, rural economic development, and food. It aims to meet the needs of com ...
Zone 6, but it may prefer Zones 7 – 9. Other places it may need the protection of a heated greenhouse. It is considered 'tender' (needing protection) in the UK. It likes well drained soils with a PH level of between 5.0 and 6.0. It may tolerate sandy loam soils. It prefers positions in full sun but can also tolerate light to moderate shade as well. It is also partially drought tolerant, and can be grown in a container or plant pot. It is rare in cultivation in Europe, the UK and the US. A study has taken place in 2014, of the Iris speculatrix populations in
Hangzhou Hangzhou ( or , ; , , Standard Mandarin pronunciation: ), also romanized as Hangchow, is the capital and most populous city of Zhejiang, China. It is located in the northwestern part of the province, sitting at the head of Hangzhou Bay, whi ...
, China. These found that the flowering stage of the populations was about 35 days from May to June, and the majority of plants kept blooming from 8 May to 20 May. Also that the flowering stage for individual plant was 3–6 days and the life span of a single flower was about 3 days. Specimens of '' Iris proantha'' and ''Iris speculatrix'' can be seen in
Hangzhou Botanical Garden Hangzhou Botanical Garden () is a large public botanical garden located in Hangzhou City, Zhejiang Province, People's Republic of China. Introduction The garden was founded in 1956. It is located in Taoyuanling, Xihu District, Hangzhou. It has a ...
.


Hybrids and cultivars

''Iris speculatrix var. alba'' (described by V.H.C.Jarrett in 'Sunyatsenia' Vol.3(4) on page 265 in 1937), is a white-flowered form. But this name is now widely regarded as a synonym of ''Iris speculatrix''.


References


Sources

*Mathew, B. 1981. The Iris. 75–76. *Waddick, J. W. & Zhao Yu-tang. 1992. Iris of China. *Wu Zheng-yi & P. H. Raven et al., eds. 1994–. Flora of China


External links

* * {{Taxonbar, from=Q10960319 speculatrix Flora of China Flora of Hong Kong Flora of Taiwan Garden plants of Asia Plants described in 1877 Taxa named by Henry Fletcher Hance