- ≡ Juncus dichotomus Elliott (1817)
- ≡ Juncus tenuis var. dichotomus (Elliott) A.W.Wood
- = Juncus dichotomus var. platyphyllus Wiegand (1903)
- ≡ Juncus tenuis var. platyphyllus (Wiegand) Cory (1936)
- ≡ Juncus platyphyllus (Wiegand) Fernald, Rhodora 47: 124 (1945)
Perennial, stiff erect clumps c, 60 cm high. stems rigid, bearing several basal sheaths and leaves. Leaves much < stems ± rigid, narrow, subterete, channelled; lowest sheaths light brown, sheaths of upper leaves reddish-purple with short truncate cartilaginous auricles. Inflorescence 4–10 cm long, with several ± rigid branches, and very slender bract not much > inflorescence. Flowers many, sessile, evenly spaced and often second along branches or more clustered. Tepals 3.5–4.5 mm long, all ± equal, acuminate, spreading from capsule at maturity. Stamens 6. Capsule 3mm long, ± = or slightly < tepals, ovoid, shortly mucronate, shining, light brown.
[From: Healy and Edgar (1980) Flora of New Zealand. Volume 3 as Juncus dichotomus Elliott]