Galium L.
“Leaves” 6 or less in each whorl
Stipules and leaves the same size (“leaves” at each node similar)
Fruit and ovary without hooked hairs
Fruit not ribbed. Peduncles and/or pedicels more than 1 mm long. Leaves not membranous
Stems weak and flexible to the base from an extensive branched underground rhizome, rooting at the nodes; primary root not usually evident
Stems brittle towards the base from a conspicuous primary root. Rhizomes absent or very poorly developed