29 Juni 2010

Taraxacum

Dandelion (Taraxacum) is a genus of the family Asteraceae (Asteraceae). Its best-known representative of the local Common Dandelion, the "Dandelion".

The representatives of the genus are perennial herbaceous plants, the height of (rarely up to 5) is usually 30-40 (rarely achieved during the fruiting up to 60) cm. They contain in all plant parts with a white latex. The tap roots are in short, strong stems squeezed over on the fan leaves are dense in basal rosettes. The leaves are ovate to lanceolate and slightly to strongly lobed, incised and toothed.

Many of the features are plastic and can be very different. Thus even a single plant, the leaf shape varies greatly depending on rainfall, solar radiation and the season in which the leaf is formed.

The leaf axils arise Blütenstandstiele hollow bearing at the upper end of each one individual, körbchenförmigen inflorescence (flower appearance) over densely spirally standing bracts. The floral baskets have a diameter of 80-40 mm. Two (or rarely three) whorls with a total of seven to 25 bracts enclosing initially open the bud, and then align themselves with inflorescence. The Blütenstandboden is flat, plate-shaped. An inflorescence contains only (rarely to 15) usually 20-150 florets. The color of the florets ranges depending on the kind of yellowish white to yellow-orange, sometimes greenish, often with purple exterior and gray stripes. The anthers are yellow to cream-yellow, sometimes darker. The pencil is yellow or greenish, sometimes grayish to blackish.

The four-to twelve-(15 -)-ribbed achenes are pale to olive, brown, red, light to dark gray. Your Pappus holds a wreath from 50 to over 105 white on cream-colored to yellow, feathery bristles. The furry flying gliders, the achenes are spread by the wind (kite flying).

Source: http://de.wikipedia.org/wiki/L%C3%B6wenzahn_(Taraxacum)
See Also: international flower delivery, florist

Tidak ada komentar:

Poskan Komentar