Leaf shoots slender, usually many-bladed. Inflorescence terminal, often lax; bracts each subtending a cincinnus of flowers or flowers replaced by bulbils; bracteoles open to base. Corolla tube slender; lobes sub-equal. Labellum connate to filament in a short tube above petaloid lateral staminodes, auriculate at base, the free part often bilobed. Filament long, slender, curved; anther small with (in Australia) 4 lateral appendages; crest absent. Ovary unilocular. Fruit a small capsule.