There are no currently accepted infrataxa. Carey, Jennifer, H. 1994. The fruit is a capsule. Seeds are winged. Attached to the bulb base is a short rhizome.
Roots arise from the peripheral area of the bulb at the junction with the rhizome.
Bunchflowers flower irregularly. The winged seeds are presumably dispersed by wind. Slender bunchflower occurs on slopes and in ravines, gorges, and coves. It grows on rich, moist sites on rocky, well-drained soils. Slender bunchflower is shade tolerant.