Table 1 Differences in annual precipitation (lower triangle) and mean annual temperature (upper triangle) between selected African genera of Tordylieae. All comparisons are available online in Additional file A4

Afroligusticum

–

1.1–2.9 °C

1.2–3.1 °C

2.2–4.2 °C

2.1–4.0 °C

0.7–3.0 °C

1.2–4.0 °C

Capnophyllum

628–854 mm

–

0.0–0.4 °C

0.7–1.6 °C

0.7–1.4 °C

3.2–4.6 °C

0.0–1.7 °C

Dasispermum

543–750 mm

27–162 mm

–

0.7–1.5 °C

0.6–1.2 °C

3.3–4.7 °C

0.0–1.5 °C

Nanobubon*

495–712 mm

62–213 mm

0–102 mm

–

0.0–0.6 °C

4.3–5.8 °C

0.0–1.8 °C

Notobubon*

564–768 mm

10–141 mm

0–64 mm

6–119 mm

–

4.2–5.6 °C

0.0–1.6 °C

Lefebvrea

366–597 mm

175–345 mm

95–235 mm

44–200 mm

116–253 mm

–

3.2–5.7 °C

Scaraboides

1029–1313 mm

311–549 mm

417–633 mm

454–682 mm

393–618 mm

570–810 mm

–