Physical Characteristics |
annual dicotyledonous plant, infesting. It
can reach 120 centimeters in height. The stem that is found below the cotyledons
is glabrous, even if a thin duvet can sometimes cover it and it can be reddish
near the basis. The cotyledons are narrow, from 10 to 12 metres long, and
have a colour which ranges from green to reddish on the upper side. The
first leaves are alternate, oval, and slightly dentate on the apex; the
following leaves are alternate. There can be some filaments on the borders
of the leaves and along the veins, most of all on the surface of the lowest
leaves. The leaves are alternate, form 8 to 10 centimeters long, ovate,
with waving borders; the petiole is about 1 centimeters long. The stem is
strong, straight and branched and can reach 120 centimeters in height. It
sometimes has hairs, especially near the upper part of the plant. It has
a taproot, often reddish. The flowers are small and green; they are produced
in thick and compact terminal panicles, up to 16 centimeters long. Small
inflorescences can be found also between the stem and the petiole of the
leaves. Male flowers and the female ones are on the same plant. Each terminal
panicle contains a lot of spikes, thickly packed, that have 4 –8 millimeters
long bracts. |