Empogona, SECT.

KEY TO THE SPECIES OF EMPOGONA SECT. View in CoL KRAUSSIOPSIS (ROBBR.) TOSH & ROBBR. INCLUDING EMPOGONA JENNIFERAE View in CoL

(revised from Flora Zambesiaca, Bridson 2003: 466)

Section Kraussiopsis is characterised by flowers sessile or subsessile, with bractlets mostly absent; bract and bracteoles stiff, remaining entire, with leaf and stipule-derived lobes clearly dissimilar; calyx lobes touching or overlapping; throat hairs of corolla not forming a domed mat; leaf blades coriaceous, drying yellow green ( Bridson 2003: 465)

9. Leaves subcoriaceous with 10–13 main pairs of lateral nerves; peduncles 2–3 mm long; filaments c. 4 mm long; cultivated............................ lanceolata

9. Leaves coriaceous with 4–10 main pairs of lateral nerves; peduncles 0.1–2 mm long; filaments to 3 mm long; indigenous.................................... 10

10. Shrub or small tree of rocky, loamy or lateritic substrates, 1.25–5 m tall (infrequently a subshrub 30–50 cm tall); leaf blades mostly elliptic acute, subacuminate or acuminate; petiole 2–8 mm long, grooved, glabrous above... 10a

10. Rhizomatous pyrophytic undershrub of Kalahari sands, 7.5–30(–40) cm high; leaf blades mostly obovate round- ed, obtuse or infrequently acute; petiole 1.5–3 mm long, ± flat, hairy above.................. 9. cacondensis View in CoL

10a. Secondary nerves 4–6(–7) on each side of midrib; corolla tube length 5–6(–7), lobes 5–6(–7) mm long; fruit ellipsoid, 6–8 mm diam, disc exserted, conspicuous................................... 8a. jenniferae View in CoL

10a. Secondary nerves (5–)7–10(–12) on each side of midrib; corolla tube length 2–4(–5) mm, lobes (2.75–) 4.5–5 mm long; fruit globose 5 mm diam, disc concealed by calyx lobes.................................... 10b

10b. Calyx lobes 0.5–0.75(–1) mm long, ovate, overlapping at base when flowering; anther apiculum 0.25–0.5 mm long. — Zimbabwe, Mozambique.......................................... congesta subsp. chasei View in CoL

10b. Calyx lobes (0.75–) 1–1.25 mm long, broadly ovate, overlapping for most of their length; anther apiculum 0.5–1 mm long. — Democratic Republic of Congo ( Katanga), Rwanda, Burundi, Uganda, Tanzania, Zambia.............................. congesta subsp. congesta View in CoL