From the Latin ‘spiralis’ / ‘spiralis’ meaning ‘spiral’
Rhizomatous perennial, 20--50 cm, often in small clumps, stems flattened and 2-winged, usually unbranched, lateral flower clusters sessile. Leaves fairly broad, soft. Flowers secund, white or pale blue, stamens and style long, spathes green with hylaine margins. Capsules elongate. Mainly Sept.--Nov. Rocky sandstone and granite slopes, to 600 m, SW, AP, LB, SE (Cape Peninsula to Knysna).