Genus of orchids
The genus Arachnis Arach in horticultural trade, (common name scorpion orchid ,[ 2] [ 3] orchid family (Orchidaceae), consisting of more than 20 species native to China , India , Southeast Asia , Indonesia , the Philippines , New Guinea , and the Solomon Islands .[ 4] [ 5]
Description
Vegetative characteristics
The appearance of the monopodial, epiphytic herbs of the genus Arachnis is characterized by distichously arranged, linear leaves.[ 6] [ 7] Arachnis does not produce pseudobulbs.[ 8]
Generative characteristics
The flowers are thought to resemble spiders,[ 8] [ 6] [ 8] [ 8]
Arachnis labrosa growing epiphytically on a tree
Detail of Arachnis labrosa flower
Botanical illustration of Arachnis clarkei
Detail of Arachnis cathcartii flower
Detail of Arachnis flos-aeris flower
Botanical illustration of Arachnis annamensis
Etymology
The generic epithet Arachnis is derived from the Greek word arachne for spider.[ 9]
Ecology
Habitat
Arachnis senapatiana has been found growing in subtropical broad-leaved forests at elevations of 1747 m above sea level.[ 6]
Flowering
Arachnis senapatiana is known to flower in June.[ 6]
Taxonomy
Accepted species
There are currently 16 accepted species, including one natural hybrid:[ 1]
Arachnis beccarii Rchb.f. is now considered to be Dimorphorchis beccarii [ 10] Arachnis breviscapa (J.J.Sm.) J.J.Sm. is now considered to be Dimorphorchis breviscapa [ 11] Arachnis celebica (Schltr.) J.J.Sm. is now considered to be Dimorphorchis celebica [ 12] Arachnis imthurnii (Rolfe) L.O.Williams is now considered to be Dimorphorchis beccarii var. imthurnii (Rolfe) Kocyan & Schuit.[ 13] Arachnis longicaulis (Schltr.) L.O.Williams is now considered to be Dimorphorchis breviscapa (J.J.Sm.) Kocyan & Schuit.[ 11] Arachnis lowii (Lindl.) Rchb.f. is now considered to be Dimorphorchis lowii [ 14] Arachnis lyonii Ames is now considered to be Dimorphorchis lyonii [ 15] Arachnis muelleri (Kraenzl.) J.J.Sm. is now considered to be Dimorphorchis beccarii var. beccarii [ 16] Arachnis philippinensis (Lindl.) Ames is now considered to be Trichoglottis philippinensis [ 17] Arachnis rohaniana (Rchb.f.) Rchb.f. is now considered to be Dimorphorchis rohaniana [ 18] Arachnis beccarii var. imthurnii (Rolfe) K.W.Tan is now considered to be Dimorphorchis beccarii var. imthurnii (Rolfe) Kocyan & Schuit.[ 19] Arachnis longicaulis f. flavescens Valmayor & D.Tiu is now considered to be Dimorphorchis breviscapa (J.J.Sm.) Kocyan & Schuit.[ 11]
Conservation
Arachnis has become extinct in Nansei-shoto .[ 1]
Horticulture
It can be cultivated under warm and moist conditions growing in pots, baskets, or mounted on slabs.[ 7]
References
^ a b c "Arachnis Blume" . Plants of the World Online Royal Botanic Gardens, Kew . Retrieved 6 January 2022 .^ Beard, James Daniel (2015). "A Translator's Vietnamese English Dictionary of Plant Names" (PDF) . monash.edu.au. Archived from the original (PDF) on 21 December 2016. Retrieved 17 December 2016 . ^ Yearron, Sydney H. "Scientific or Latin Names to English Common Name" (PDF) . The Canadian Orchid Congress. Retrieved 21 December 2016 . ^ Kew World Checklist of Selected Plant Families ^ Flora of China, v25 p 465, 蜘蛛兰属 zhi zhu lan shu, Arachnis ^ a b c d Jakha, H. Y., Deb, C. R., Dey, S., & Jamir, N. S. (2014). "Arachnis senapatiana (Phukan & AA Mao) Kocyan & Schuiteman (Orchidaceae): an addition to the flora of Nagaland, India." Pleione, 8(2), 516-518.
^ a b Rach, N. (n.d.). Arachnis Blume 1825. American Orchid Society. Retrieved January 6, 2023, from https://www.aos.org/orchids/orchids-a-to-z/letter-a/arachnis.aspx
^ a b c d Tan, K. W. (1974). "Taxonomy of Arachnis , Armodorum , Esmeralda and Dimorphorchis (Orchidaceae)." University of Miami.
^ Teoh, E.S. (2021). Arachnis Bl.. In: Orchid Species from Himalaya and Southeast Asia Vol. 1 (A - E). Springer, Cham. https://doi.org/10.1007/978-3-030-58872-4_15
^ "Dimorphorchis beccarii (Rchb.f.) Kocyan & Schuit" . Plants of the World Online Royal Botanic Gardens, Kew . Retrieved 6 January 2022 .^ a b c "Dimorphorchis breviscapa (J.J.Sm.) Kocyan & Schuit" . Plants of the World Online Royal Botanic Gardens, Kew . Retrieved 6 January 2022 .^ "Dimorphorchis celebica (Schltr.) Ormerod" . Plants of the World Online Royal Botanic Gardens, Kew . Retrieved 6 January 2022 .^ "Dimorphorchis beccarii var. imthurnii (Rolfe) Kocyan & Schuit" . Plants of the World Online Royal Botanic Gardens, Kew . Retrieved 6 January 2022 .^ "Dimorphorchis lowii (Lindl.) Rolfe" . Plants of the World Online Royal Botanic Gardens, Kew . Retrieved 6 January 2022 .^ "Dimorphorchis lyonii (Ames) Ormerod" . Plants of the World Online Royal Botanic Gardens, Kew . Retrieved 6 January 2022 .^ "Dimorphorchis beccarii var. beccarii " . Plants of the World Online Royal Botanic Gardens, Kew . Retrieved 6 January 2022 .^ "Trichoglottis philippinensis Lindl" . Plants of the World Online Royal Botanic Gardens, Kew . Retrieved 6 January 2022 .^ "Dimorphorchis rohaniana (Rchb.f.) P.J.Cribb" . Plants of the World Online Royal Botanic Gardens, Kew . Retrieved 6 January 2022 .^ "Dimorphorchis beccarii var. imthurnii (Rolfe) Kocyan & Schuit" . Plants of the World Online Royal Botanic Gardens, Kew . Retrieved 6 January 2022 .
External links
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