Stachys annua
Scientific Name | Stachys annua L. |
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Common Names | English: Annual hedgenettle, betony, Annual Woundwort; German: Einjähriger Ziest; French: Épiaire annuelle; Spanish: Hierba de la faridura |
Description | Annual herbaceous plant, finely pubescent, height 10-40 cm (3.93 - 15.74 inch). |
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Descriptions
Characteristic Features
Corolla 5-lobed with the top lobe forming a 'hood'.
Young Plant
Leaves entire, elliptic or ovate, regularly dentate.
Cotyledons
Elongate, spoon-shaped.
Stems
Erect, branched.
Leaves
Glabrescent, oblong -lanceolate, crenulate -dentate, tapered into a petiole. Floral leaves acute apex.
Propagation Organs
Flowers
White-yellowish, 3-6 in distant whorls.
Very small bracteoles.
Calyx hairy, tubular-campanulate, with teeth arcuate, lanceolate awl -like with a shortly ciliate point, teeth 1/2 time shorter than the tube.
Corolla 1 time longer than the calyx. Calyx has a prominent tube with a transversal ring of hairs.
Flowering Period
June to August.
Fruit
Achenes circa 2 mm (0.078 inch) long, brown-black, finely spotted.
Viability of Seeds
More than 60 years.
Propagation
By seeds. Main germination period is in spring.
Occurrence
Habitat
Wastelands, grasslands and woodland edges.
Soil
Any damp soil in full sun or in light shade.
Agricultural Importance
S. annua can become a troublesome weed in damp turfs. It also is a potential seed contaminant.
Control
Useful non-chemical contribution to Integrated Weed Management
Seed cleaning and preventing seed rain.
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