dcsimg
549.bi image 27123.130x130
Life » » Plants » » Mint family »

Dead Nettle

Lamium amplexicaule L.

Brief Summary

    Lamium amplexicaule: Brief Summary
    provided by wikipedia

    Lamium amplexicaule, commonly known as henbit dead-nettle, common henbit, or greater henbit, is a species of Lamium native to Europe, Asia and northern Africa.

    It is a low-growing annual plant growing to 10–25 cm (3.9–9.8 in) tall, with soft, finely hairy stems. The leaves are opposite, rounded, 2–3 cm (0.79–1.18 in) diameter, with a lobed margin. The flowers are pink to purple, 1.5–2 cm (0.59–0.79 in) long. The specific name refers to the amplexicaul leaves (leaves grasping the stem).

Comprehensive Description

    Lamium amplexicaule
    provided by wikipedia

    Lamium amplexicaule, commonly known as henbit dead-nettle,[1] common henbit, or greater henbit, is a species of Lamium native to Europe, Asia and northern Africa.

    It is a low-growing annual plant growing to 10–25 cm (3.9–9.8 in) tall, with soft, finely hairy stems. The leaves are opposite, rounded, 2–3 cm (0.79–1.18 in) diameter, with a lobed margin. The flowers are pink to purple, 1.5–2 cm (0.59–0.79 in) long. The specific name refers to the amplexicaul leaves (leaves grasping the stem).

    Description

    Henbit dead-nettle is an annual herb with a sprawling habit and short erect squarish, lightly hairy stems. It grows to a height of about 10 to 30 cm (4 to 12 in). The leaves are in opposite pairs, often with long internodes. The lower leaves are stalked and the upper ones stalkless, often fused, and clasping the stems. The blades are hairy and kidney-shaped, with rounded teeth. The flowers are relatively large and form a few-flowered terminal spike with axillary whorls. The calyx is regular with five lobes and closes up after flowering. The corolla is purplish-red, fused into a tube 15 to 20 mm (0.6 to 0.8 in) long. The upper lip is convex, 3 to 5 mm (0.12 to 0.20 in) long and the lower lip has three lobes, two small side ones and a larger central one 1.5 to 2.5 mm (0.06 to 0.10 in) long. There are four stamens, two long and two short. The gynoecium has two fused carpels and the fruit is a four-chambered schizocarp.[2]

    This plant flowers very early in the spring even in northern areas, and for most of the winter and the early spring in warmer locations such as the Mediterranean region. At times of year when there are not many pollinating insects, the flowers self-pollinate.[2]

    Distribution and habitat

    Henbit dead-nettle is probably native to the Mediterranean region but has since spread around the world. It is found growing in open areas, gardens, fields and meadows.[2] It propagates freely by seed, where it becomes a key part of a meadow ecosystem, Sometimes entire fields will be reddish-purple with its flowers before spring ploughing. Where common, it is an important nectar and pollen plant for bees, especially honeybees, where it helps start the spring build up.

    It is widely naturalised in eastern North America and elsewhere, However, due to its attractive appearance, edibility and readiness to grow in many climates, often means it is permitted to grow when other 'weeds' are not. This plant, though common is not regarded as a threat to local ecosystems. It plays an arguably beneficial role in its environment, by providing nectar to pollinators and providing forage for animals, the seed is also eaten by many species of birds.[3] However, non-native species can be criticized for destabilizing ecosystems by favoring certain species over others. They typically also do not provide food for insect larvae.

    Uses

    The leaves, stem, and flowers of the plant are edible and have a slightly sweet and peppery flavor, similar to celery. Henbit can be eaten raw or cooked.

    References

    1. ^ "BSBI List 2007". Botanical Society of Britain and Ireland. Archived from the original (xls) on 2015-01-25. Retrieved 2014-10-17..mw-parser-output cite.citation{font-style:inherit}.mw-parser-output q{quotes:"""""'"'"}.mw-parser-output code.cs1-code{color:inherit;background:inherit;border:inherit;padding:inherit}.mw-parser-output .cs1-lock-free a{background:url("//upload.wikimedia.org/wikipedia/commons/thumb/6/65/Lock-green.svg/9px-Lock-green.svg.png")no-repeat;background-position:right .1em center}.mw-parser-output .cs1-lock-limited a,.mw-parser-output .cs1-lock-registration a{background:url("//upload.wikimedia.org/wikipedia/commons/thumb/d/d6/Lock-gray-alt-2.svg/9px-Lock-gray-alt-2.svg.png")no-repeat;background-position:right .1em center}.mw-parser-output .cs1-lock-subscription a{background:url("//upload.wikimedia.org/wikipedia/commons/thumb/a/aa/Lock-red-alt-2.svg/9px-Lock-red-alt-2.svg.png")no-repeat;background-position:right .1em center}.mw-parser-output .cs1-subscription,.mw-parser-output .cs1-registration{color:#555}.mw-parser-output .cs1-subscription span,.mw-parser-output .cs1-registration span{border-bottom:1px dotted;cursor:help}.mw-parser-output .cs1-hidden-error{display:none;font-size:100%}.mw-parser-output .cs1-visible-error{font-size:100%}.mw-parser-output .cs1-subscription,.mw-parser-output .cs1-registration,.mw-parser-output .cs1-format{font-size:95%}.mw-parser-output .cs1-kern-left,.mw-parser-output .cs1-kern-wl-left{padding-left:0.2em}.mw-parser-output .cs1-kern-right,.mw-parser-output .cs1-kern-wl-right{padding-right:0.2em}
    2. ^ a b c "Henbit dead-nettle: Lamium amplexicaule". NatureGate. Retrieved 2013-12-15.
    3. ^ "A Little Bit of Henbit". Southern meadows.

Distribution

    Distribution
    provided by eFloras
    Throughout temperate regions.
    Distribution
    provided by eFloras
    Anhui, Fujian, Gansu, Guizhou, Henan, Hubei, Hunan, Jiangsu, Qinghai, Shaanxi, Sichuan, Xinjiang, Xizang, Yunnan, Zhejiang [Japan, Kazakhstan, Kyrgyzstan, Russia, Tajikistan, Turkmenistan, Uzbekistan; SW Asia, Europe]
    Distribution in Egypt
    provided by Bibliotheca Alexandrina LifeDesk

    Nile region, oases, Mediterranean region and Sinai

    Global Distribution
    provided by Bibliotheca Alexandrina LifeDesk

    North Africa, temperate Eurasia.

Morphology

    Comments
    provided by eFloras
    Used medicinally for traumatic injury.
    Description
    provided by eFloras
    Herbs annual or biennial. Stems to 30 cm, much branched at base, ascending, subglabrous. Upper leaves sessile; petiole of basal leaves at least as long as blade; leaf blade circular to reniform, 1-2 × 0.7-1.5 cm, sparsely strigose, base truncate to broadly truncate-cuneate, semi-clasping, margin deeply crenate to almost palmately lobed, apex rounded. Verticillasters 6-10-flowered; bracts ca. 4 × 0.3 mm, ciliate. Calyx tubular-campanulate, 4-5 × 1.7-2 mm, densely villous, glabrous except for white villous apically inside; teeth lanceolate-subulate, 1.5-2 mm, margin ciliate. Corolla purple-red or reddish, ca. 1.7 cm, puberulent; tube ca. 1.3 cm, throat ca. 3 mm wide, annulus absent; upper lip densely purple-red pubescent on outside, straight, oblong, ca. 4 mm, apex slightly curved; lower lip slightly longer; middle lobe obcordate, 2-lobulate. Filaments glabrous; anthers hirsute. Nutlets grayish yellow, obovoid, triquetrous, constricted at base, ca. 2 × 1 mm, white tuberculate. Fl. Mar-May, fr. Jul-Aug.
    Elevation Range
    provided by eFloras
    1200-3700 m

Diagnostic Description

    Synonym
    provided by eFloras
    Galeobdolon amplexicaule (Linnaeus) Moench; Lamiopsis amplexicaulis (Linnaeus) Opiz; Pollichia amplexicaulis (Linnaeus) Willdenow.

Habitat

    Habitat
    provided by eFloras
    Roadsides, forest margins, marshes, sometimes weed in fields; 0-4000 m.