Plantae

Sect. Macrocentrae

1a. Dwarf plants to 30 mm tall; leaves linear, 1.0– 1.5 mm wide; pedicels 1.5–2.0 mm long...... 5.1. D. toxicaria

1b. Larger plants more than 60 mm tall; leaves linear to lanceolate or cylindrical and 3–14 mm wide; pedicels 2–14 mm long: 2a. Bulbs dark red; inflorescence (60–)200–450(–600) mm tall, scape mostly shorter than rachis, often less than half as long; bracts 1–3 mm long, spur of lower bracts up to 1 mm long; leaves 3 to 8, linear to narrowly lanceolate, channelled; plants from western and northern interior South Africa.....4. D. sanguinea 2b. Bulbs white to greenish; inflorescence 300–800(–900) mm tall, scape longer than inflorescence rachis; bracts 4–6 mm long, spur of lower bracts 20–35 mm long, forming a skirt below raceme in bud; leaf solitary, cylindrical, resembling scape; plants from eastern Drakensberg.............. 5. D. macrocentra