Galium compactum

Caespitose or straggling perennial, often rhizomatous; stems slender, mostly 3–8 cm long, usually numerous, pilose to glabrescent. Leaves and stipules subsessile, c. equal, in whorls of 4, ovate to narrow-ovate, mostly 3.5–4.5 mm long and 1.5–1.8 mm wide, acute, upper surface pilose to glabrescent, lower surface pilose to glabrescent with hairs mostly on midrib and the recurved margins. Inflorescences mostly 1–3-flowered, not exceeding whorls when mature, or occassionally lowermost 1 or 2 exceeding whorls; peduncles to 0.5 mm long; pedicels to 0.5 mm long. Corolla 2–3 mm diam., greenish-yellow. Fruit depressed-globose, 1.2–1.6 mm long; mericarps reniform, touching one another, rugose. Flowers Sep.–Jan.