Cleavers
Galium aparine

Description
Annual or perennial climbing weed, propagating itself by seed, up to 120 cm (47.24 inch) tall.

Characteristic Features
Rough, sticky leaves ("sticky weed"). The leaves form whorls at the stem nodes. G. aparine can grow upwards only by supporting itself on other plants.

Cotyledons
An elongated oval in shape, tough, fleshy, bluish-green, with a distinct notch at the tip.

Stems
Prostrate or scrambling, square in cross-section, often branching, with "sticky" hairs at the ridges.

Leaves
4-8 lanceolate leaves forming whorls at the stem nodes. Leaves are"sticky" by downward-pointing bristles.