Biology :

Usually ascending to erect, virgate, rarely caespitose, perennial herb or suffrutex, but also small woody shrubs, up to (0.1–)0.2–0.4(–0.5) m high, mostly divided at the base into a few initially simple stems, only branching upwards into the inflorescences, rarely consisting of a main stem with side branches, these branching into inflorescences; basal part with pale, yellowish brown or reddish bark, herbaceous and green upwards, appressed pubescent, densely to scattered leafy.