Galium is a genus of annual or perennial herbs, stems slender, 4-angled.
Leaves whorled.
Flowers 4-parted, radially symmetrical, tubular, petal lobes about as long as tube, small, stamens 4, ovary inferior, 2-parted, styles 2 (use lens).
Fruit dry (ours), 2-parted, each part rounded, 1-seeded.