sect. Psorophytum (Spach) Nyman

Shrub up to 1-5 m tall, evergreen, glabrous, without dark glands; branching lateral or rarely pseudo-dichotomous. Stems 4-lined, not compressed when young or becoming terete, verrucose-glandular; cortex exfoliating in short flakes; bark scaly. Leaves opposite, decussate, sessile, free, deciduous at basal articulation; lamina entire, with venation pinnate, closed, the tertiary obscure; laminar glands punctiform, pale; marginal gland dots pale; ventral glands absent. Inflorescence 1-flowered; bracts foliar; bracteoles sepaline, involucral. Flowers stellate, homostylous. Sepals 5, free, persistent, spreading to reflexed in fruit, with margin entire to denticulate; veins numerous; laminar glands pale, linear, interrupted distally, sometimes also punctiform; submarginal and marginal glands pale. Petals 5, deciduous, without or with very shallow lateral apiculus, margin entire; marginal glands absent; laminar glands numerous, pale, linear, sometimes interrupted distally. Stamen fascicles 5, free, deciduous, each with 18-25 stamens; filaments united very shortly; anther gland amber. Ovary with 5(4) incompletely axile placentae (united at the base, free but deeply intrusive above), each ∞-ovulate; styles 5(4), free; stigma small. Capsule 5(4)-valved, coriaceous, longitudinally vittate. Seeds cylindric, not carinate, without apical wing expansion; testa linear-reticulate.