Dactylostalix wrestling
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Dactylostalix ringens is a species of orchid from East Asia. It is the only species in the genus Dactylostalix . They are small plants that grow in the shade, a single leaf sprouts every year.
description
In Dactylostalix ringens is perennial , herbaceous plants. Underground they form a four to five millimeter thin, hairy rhizome from which a new root arises every year , this is hairy and becomes about five to seven centimeters long. The rhizome continues above ground as a shoot about four to five centimeters long, on which a single, broad, oval leaf sits. The leaf is about five inches long and just as wide. The leaf sprouts in September and wilts in August of the next year. Side buds along the rhizome rarely sprout, usually when the terminal bud is damaged.
The inflorescence appears laterally next to the base of the leaf. It becomes 15 to 20 centimeters high, one to two tubular bracts surround it, it has a single flower . The bract is only three millimeters in size and thinly skinned. The petals are the same except for the lip : they are lanceolate, pointed, and light green. The sepals are spread out, the petals point forward. The lip is three-lobed and white. The side lobes are turned up and colored purple, the middle lobe is turned down a little, with purple markings, the edge is wavy. The column is about an inch long, with wide wings on the sides. The stamen is at the end of the column and is bent down opposite the column axis. It contains four pollinia that adhere to a common adhesive disc ( Viscidium ) with rudimentary stalks . The capsule fruit is two centimeters long, spindle-shaped, widest above the middle.
The number of chromosomes is 2n = 42.
distribution
Dactylostalix wrestling occurs in Japan on the islands of Hokkaidō , Honshū and Shikoku , on the Kuril islands Iturup , Kunaschir and Schikotan as well as on Sakhalin . The locations are in the undergrowth of coniferous or deciduous forests. They often grow in cushions of moss or take root in fallen leaves, mostly on nutrient-poor and acidic, permanently moist soils. They are not very competitive and disappear when the forest floor is thicker. They are occasionally associated with shade flowers ( Maianthemum ) and lady ferns ( Athyrium ).
Systematics and botanical history
The monotypical genus Dactylostalix belongs to the tribe Calypsoeae . Within this group, the closest related genus is Ephippianthus .
The species was first described by Reichenbach in 1878. The generic name is made up of the Greek words δάκτυλος dactylos , "finger", and στάλιξ stalix , "stake". Occasionally the spelling Dactylostalyx is used. The species name wrestling means "baring teeth".
Synonyms of the species Dactylostalix ringens Rchb.f. are Pergamena uniflora Finet , Calypso japonica Maxim. ex Kom. and Dactylostalix maculosa Miyabe & Kudô .
use
Occasionally, Dactylostalix is cultivated as an ornamental plant.
supporting documents
Most of the information in this article comes from:
- MG Vakhrameeva, IV Tatarenko, TI Varlygina, GK Torosyan, MN Zagulskii: Orchids of Russia and Adjacent Countries . ARG Gantner, Ruggell 2008, ISBN 978-3-906166-61-2 , p. 429-432 .
- Alec M. Pridgeon, Phillip Cribb, Mark W. Chase (Eds.): Genera Orchidacearum. Epidendroideae (Part one) . 2nd Edition. tape 4/1 . Oxford University Press, New York and Oxford 2005, ISBN 0-19-850712-7 , pp. 101-102 .
Individual evidence
- ↑ Rafaël Govaerts (ed.): Dactylostalix. In: World Checklist of Selected Plant Families (WCSP) - The Board of Trustees of the Royal Botanic Gardens, Kew .
- ↑ Helmut Genaust: Etymological dictionary of botanical plant names. 3rd, completely revised and expanded edition. Nikol, Hamburg 2005, ISBN 3-937872-16-7 (reprint from 1996).
- ↑ Rafaël Govaerts (Ed.): Dactylostalix ringens. In: World Checklist of Selected Plant Families (WCSP) - The Board of Trustees of the Royal Botanic Gardens, Kew . Retrieved May 7, 2020.
