Lamium amplexicaule
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Description: Illustration and information on henbit dead-nettle, its morphology, biology, distribution, ecology and economic significance as a weed species.
AgroAtlas - Weeds - Lamium amplexicaule L. - Henbit Dead-Nettle. Family Lamiaceae Lindl., genus Lamium L. Lamium stepposum Kossko ex Klok. Annual or facultative biennial germiniparous weed. Stems usually numerous, erect or ascending, 10-20 cm high, ramified below, tetrahedral, covered with soft haires in upper part. Cotyledons round-oval, with slightly concave tip, petiolate, tips at base usually not touching each other. Leaves transverse opposite, round-reniform; lower leaf pairs wide apart, long-petiolate; upper leaves sessile, enclosing stem, and reticulate-rugose; margins deeply crenate; all leaves nearly hairless or shortly bristly-haired. Flowers numerous, located in dense axillary whorls. Corolla pink or carmine-red, fluffy-haired on the outside, with thin long tube. Tube 1.1-1.3 cm long, straight or sometimes bent, widened at fauces, hairless inside. Upper labium oblong or ovate, 2-3 mm long, lower labium somewhat shorter than upper one, with dark spots. Nutlets obovate, 2-3 mm long, 1 mm wide, nearly triquetrous, light gray or brown, with big white warty formations. The weight of 1000 nutlets is 0.6-0.8 g. Seeds per plant, 220 (50-300). Seeds keep germinating ability in soil to 5 years. Flowering period in April-September.
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| Page title: | AgroAtlas - Weeds - Lamium amplexicaule L. - Henbit Dead-Nettle. |
| Keywords: | interactive atlas map economic plant distribution area vegetation diseases pest weed USSR agriculture Russia geography GIS NIS biology photo nature geographic information system handbook ecological maps research investigation pictures download description |
| Description: | description |
| IP-address: | 195.70.197.2 |
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| Date | created: 2005.05.04 Last updated on 2014.03.05 07:21:32 MSK |