It is Galium sp. If it was here I would say Galium aparine. The seeds are small balls that cling with tiny hooks to clothing. The leaves and stems also have sticking hairs that cling to clothing/animals etc. galium aparine - Google Search http://cdn.c.photoshelter.com/img-g...Cleavers-Galium-aparine-fruits-seeds-7637.jpg Galium aparine - Wikipedia