Argun Scorpionfish
| Argun Scorpionfish | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
Argun scorpionfish ( Dracocephalum argunense ) |
||||||||||||
| Systematics | ||||||||||||
|
||||||||||||
| Scientific name | ||||||||||||
| Dracocephalum argunense | ||||||||||||
| Fish. ex link |
The Argun scorpionfish ( Dracocephalum argunense ) is a species of scorpionfish ( Dracocephalum ) in the mint family (Lamiaceae). It is common in eastern Asia .
description
Appearance and foliage leaf
The Argun dragon's head is a perennial , herbaceous plant that reaches heights of between 35 and 57 centimeters. Several upright stems are formed, which are almost hairless at the base and have too few very short and backward-directed hairs towards the upper end .
The opposite arranged leaves have petioles three quarters to two thirds shorter in the lower stem area compared to the simple leaf blade ; the upper stalk leaves are sessile. The leaf blades of the lower leaves are elongated-lanceolate with a length of 2.0 to 2.4 centimeters and a width of 0.5 to 0.6 centimeters; those of the 4.5 to 6.8 centimeters long and 0.3 to 0.6 centimeters wide, upper stem leaves are lanceolate-linear. The base of the spread is wedge-shaped and the upper end is blunt. The underside of the blade is either almost hairless or slightly downy on the leaf veins .
Inflorescence and flower
The flowering period extends from July to August. In the annual total inflorescences , the pseudo-whorled partial inflorescences are more or less close together in the uppermost two to four internodes . The lower green bracts are lanceolate to ovate-lanceolate. The higher-lying bracts are elliptical to spatulate-inverted-egg-shaped with a length of 7 to 12 millimeters; they are ciliated and pointed towards the top.
The hermaphrodite flowers are zygomorphic and five-fold with a double flower envelope . The five 1.4 to 1.8 centimeters long sepals are fused up to half their length. The calyx has dense, backward-facing and very short hairs at the base and is almost bald at the top. The five blue-violet petals are fused into a two-lipped, 30 to 40 millimeter long and downy-haired crown. The upper lip with three corolla lobes takes up about two thirds of the entire crown. The middle corolla lobe is lanceolate-egg-shaped and slightly wider than the lanceolate lateral lobes. The two lanceolate corolla lobes of the lower lip are pointed and purple in color at the upper end.
Chromosome number
The number of chromosomes is 2n = 14.
Occurrence
The Argun scorpionfish is found in southern regions of the Russian Federation Districts of Siberia and the Far East , in northeastern China , on the Korean Peninsula and in Japan . Russian occurrences are described from Buryatia , Transbaikalia , the Republic of Sakha , the Amur Oblast and the Primorye region . The populated Chinese regions are in the Inner Mongolia Autonomous Region and in the provinces of Heilongjiang , Jilin , Liaoning and Hebei .
The species colonizes grass corridors, sandy banks and bushes at altitudes of 200 to 800 meters.
Taxonomy
Dracocephalum argunense was in 1822 by Friedrich Ernst Ludwig von Fischer in Enumeratio Plantarum Horti Regii Berolinensis Altera , Volume 2, page 118 firstdescribed . Synonyms for Dracocephalum argunense fish. are Dracocephalum japonicum ( A. Gray ) Kudô , Dracocephalum ruyschiana var. argunense ( Fisch. ex Link ) Nakai , Dracocephalum ruyschiana var. japonicum A. Gray , Dracocephalum ruyschiana var. speciosum Ledeb. , Dracocephalum speciosum Ledeb. and Ruyschiana argunensis ( fish. ex link ) House .
use
The Argun scorpionfish is rarely used as an ornamental plant for perennial beds.
Source / literature
- Xi-wen Li & Ian C. Hedge: Lamiaceae . Dracocephalum. In: Wu Zheng-yi & Peter H.Raven (eds.): Flora of China . Verbenaceae through Solanaceae. tape 17 . Science Press et al. a., Beijing et al. a. 1994, ISBN 0-915279-24-X , Dracocephalum argunense, p. 238 (English, online section description, text identical to the printed work).
Individual evidence
- ↑ a b c d Eckehart J. Jäger, Friedrich Ebel, Peter Hanelt, Gerd K. Müller (eds.): Exkursionsflora von Deutschland . Founded by Werner Rothmaler. tape 5 : Herbaceous ornamental and useful plants . Springer, Spektrum Akademischer Verlag, Berlin / Heidelberg 2008, ISBN 978-3-8274-0918-8 , pp. 506 .
- ↑ a b Dracocephalum argunense at Tropicos.org. Missouri Botanical Garden, St. Louis, accessed January 24, 2012. (Chromosome Counts).
- ^ The Plant List. A working list of all plant species. 2010, accessed on January 22, 2012 (English, Dracocephalum argunense Fisch. Ex Link - assessment of species names and synonyms with regard to the degree of probability of their validity).
