Crepidorhopalon whytei

Key to the Crepidorhopalon whytei View in CoL complex

1. Corolla lacking short glands on external surface of tube; imperfectly known species from the Nguru Mountains of Tanzania......................... C. sp. aff. whytei View in CoL

1. Corolla with short glands conspicuous on distal portion of tube externally................................. 2

2. Lower lip of corolla yellow; seeds with only shallow, almost imperceptible longitudinal furrows; restricted to the Manica Highlands of Mozambique and Zimbabwe..... C. flavus View in CoL

2. Lower lip of corolla blue, purple or white; seeds either with conspicuous longitudinal furrows or subcircular depressions........................................ 3

3. Lower lip of corolla white or at most tinged pale blue; calyces, pedicels and distal internodes with numerous glandular hairs; restricted to Mt Namuli, Mozambique.... C. namuliensis View in CoL

3. Lower lip of corolla deep blue or purple; calyces, pedicels and distal internodes largely glabrous or with eglandular hairs, sometimes with scattered (sub)sessile glands but these inconspicuous............................ 4

4. Seeds not longer than wide, with subcircular depressions along the face ( Fig. 2i–k View Fig , 4i View Fig ); spurs of anterior pair of stamens markedly long and slender, 1.8–2.4 mm long; restricted to Kwale region, Kenya................ C. kwaleensis View in CoL

4. Seeds ± longer than wide, with longitudinal furrows along the face ( Fig. 2a–c, g–h View Fig ); spurs of anterior pair of stamens shorter and less slender, 0.5–1.2 mm long........... 5

5. Stems procumbent, scrambling, trailing or at most weakly decumbent; calyces with lobes longer than tube; plants of highland marshes and flushes, widespread in eastern Africa....................................... C. whytei View in CoL

5. Stems ± erect; calyces with tube longer than or equal to lobes; plants of seasonally wet grassland and miombo woodland in western Tanzania................. C. hepperi View in CoL