Geissorhiza namaquensis, W. F. Barker, W. F. Barker

Goldblatt, P. & Manning, J. C., 2017, A review of the Geissorhiza namaquensis (Iridaceae: Crocoideae) group with the new species G. namaquamontana from Northern Cape, South Africa *, South African Journal of Botany 111, pp. 299-301 : 299-300

3.1. Key to the G. namaquensis group

½ Leaves ± plane with narrowly winged, ciliate margins and veins; stem ± puberulous; flowers blue to violet; filaments equal]

1a Perianth tube 18–25 mm long; filaments 8–10 mm long… G. kamiesmontana

1b Perianth tube 6–11 mm long; filaments 4–6 mm long

2a Tepals 14–18 × 3–6 mm; anthers 4.5–7.0 mm long; style branches ± 2 mm long… G. namaquensis

2b Tepals (6–)8–10 × 1.5–2.0 mm; anthers 2–3 mm long; style branches ± 1 mm long… G. namaquamontana