Thymbra sintenisii
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Thymbra sintenisii is a plant type from the family of the mint (Lamiaceae). It is native to Turkey and Iraq .
description
Thymbra sintenisii is a small, upright shrub with heights of growth of 20 to 30 centimeters. The four-edged branches are densely hairy in the upper areas with short, protruding or backward- facing trichomes , while they are bald in the lower area.
The sitting , lanceolate leaves are up to 23 millimeters long and up to 5 millimeters wide. They have a clearly pronounced midrib and dense puncture with spherical, reddish glands . Except for the leaf margin , which is often ciliate in the lower half , the leaves are hairless. In the leaf axils there are short shoots with roof-tiled, scale-shaped leaves.
The flowering period is between June and September. The 20 to 50 millimeter long inflorescences consist of more or less compressed pseudo whorls . They contain foliage leaf similar but more pointed, the base of the leaf toward gewimperte half bracts that rarely hair wear on the underside of leaves. The bracts , in whose axils the flowers sit, are always narrower than the bracts, lanceolate and completely ciliate at the edge. The sessile flowers are zygomorphic . The 4.5 to 6.5 millimeter long calyx is covered with spherical glands, slightly hairy at the base, trapezoidal in cross section and closed when the fruit ripe. On the ventral side it is provided with two clearly pronounced longitudinal ribs that emerge from the two lower calyx teeth, on the dorsal side only the longitudinal rib of the central calyx tooth protrudes to the tip. The three teeth of the calyx upper lip are less than 0.5 millimeters long and slightly shorter than the two teeth of the lower lip. The 10 millimeter, cream-colored crown has two 3.5 millimeter long lips; the three-lobed lower lip is bent downwards; the undivided upper lip is notched, hairy and spotted on the outside by spherical glands. The stamens protrude from the corolla tube. The scar has two columns with the same branches.
The ellipsoidal clauses measure 1.2 × 1.4 millimeters.
The number of chromosomes is 2n = 30.
Thymbra sintenisii contains essential oils belonging to the aromatic group of phenols .
Occurrence
The distribution area of Thymbra sintenisii is in the Taurus Mountains and in the historical region of Kurdistan (across southeast Turkey to northern Iraq ). Thymbra sintenisii grows on calcareous , dolomitic , sandy soils, on conglomerates consisting of gravel or rubble, and on brown earth at altitudes of 500 to 1300 meters. The habitat is in forests with the Calabrian pine ( Pinus brutia ) or with the Gall oak ( Quercus infectoria ).
Systematics and research history
The first description of Thymbra sintenisii was made in 1912 by Joseph Friedrich Nicolaus Bornmüller and Georges Vincent Aznavour . The species is named after the German botanist Paul Ernst Emil Sintenis , the collector of the holotype .
Two subspecies are recognized within Thymbra sintenisii :
- Thymbra sintenisii Bornm. & Azn. subsp. sintenisii : the leaves are 23 × 5 millimeters in size with short, slightly protruding eyelashes. The bracts are smaller than the leaves and rarely hairy. The bracts are ciliate and slightly protrude from the 4.5 to 5.5 millimeter long calyx. The crown is up to 8 millimeters long. This subspecies is common in the historical region of Kurdistan , i.e. southeastern Turkey and northern Iraq.
- Thymbra sintenisii subsp. isaurica P.H.Davis : the leaves are 16 × 2.5 millimeters in size, narrower, long ciliate. The bracts are 9 × 2 millimeters in size, long ciliate, often hairy on the underside. The bracts are larger than those of subsp. sintenisii and short and long eyelashes. The calyx is 4.5 to 6.5 millimeters long. The crown can be up to 10 millimeters long. This subspecies grows on rocky slopes and in black pine forests at altitudes of 1000 to 1350 meters. It has a considerably smaller range than the nominotypical subspecies and is restricted to the Taurus Mountains in the province of Antalya . The subspecies was first published in 1980 and is named after the historical name of this region, Isauria .
swell
literature
- Ramón Morales Valverde: El género Thymbra L. (Labiatae) . In: Anales del Jardín Botánico de Madrid . tape 44 , no. 2 , 1987, Descripción de Especies 3. Thymbra sintenisii , p. 365–371 (Spanish, PDF file, 4.1 MB ).
Individual evidence
- ^ A b Semra Erken: Morphological and Anatomical Studies on Thymbra sintenisii Bornm. & Aznav. (Labiatae) . In: Turkish Journal of Botany Volume 29, No. 5, 2005, pp. 389-397. (PDF file; 909 kB)
- ↑ Joseph Friedrich Nicolaus Bornmüller: Some new types of the frontal Asian flora . In Repertorium Specierum Novarum Regni Vegetabilis Volume 10, No. 263-265, 1912, pp. 468-472, p. 471 online .
- ↑ Rafaël Govaerts (ed.): Thymbra sintenisii. In: World Checklist of Selected Plant Families (WCSP) - The Board of Trustees of the Royal Botanic Gardens, Kew . Retrieved September 15, 2019.
- ↑ PH Davis, A. Doroszenko, JR Edmondson include: materials for a Flora of Turkey XXXVII: Labiatae, Plumbaginaceae, Plantaginaceae. In: Notes from the Royal Botanic Garden Edinburgh Volume 38, No. 1, 1980, pp. 23–64 ( here: p. 59 ( Memento of the original from March 4, 2016 in the Internet Archive ) Info: The archive link was automatically inserted and not yet checked. Please check the original and archive link according to the instructions and then remove this note. ).
