Cinchona (Andersson, 1998)

Maldonado, Carla, Persson, Claes, Alban, Joaquina, Antonelli, Alexandre & Rønsted, Nina, 2017, Cinchona anderssonii (Rubiaceae), a new overlooked species from Bolivia, Phytotaxa 297 (2), pp. 203-208 : 205-206

Key for species of Cinchona occurring in Bolivia

1. Mature leaf blades glabrous above or pubescent on midrib and veins only; domatia absent or present as small pits on the lower side of the leaf blades................................................................................................................................................................................2

1’. Mature leaf blades ± hirtellous or hirsute throughout the surface above; domatia absent ............................................ C. asperifolia

2. Capsules with woody endocarp..........................................................................................................................................................3

2’. Capsules with chartaceous endocarp.................................................................................................................................................4

3. Leaf blades ovate or sub-rounded, with apex usually obtuse, chartaceous when dry; domatia absent or ± distinct tuft domatia present........................................................................................................................................................................... C. macrocalyx

3’. Leaf blades elliptic to obovate, with apex rounded to broadly obtuse, chartaceous when dry; domatia absent or small ± circular pit domatia in distal vein axils ................................................................................................................................................ C. hirsuta

4. Capsules with basipetal dehiscence; leaf blades glossy above ................................................................................... C. anderssonii

4’. Capsules with acropetal dehiscence; leaf blades matte above...........................................................................................................5

5. Leaf blades papyraceous when dry; domatia absent or very indistinct pouch shaped ................................................... C. pubescens

5’. Leaf blades papyraceous or chartaceous when dry, always present; domatia absent or with distinct pit domatia in midrib............6

6. Leaf blades papyraceous, round to cuneate at base...........................................................................................................................7

6’. Leaf blades chartaceous, acute or attenuate at base ......................................................................................................... C. calisaya

7. Leaf blades glabrous to ± densely puberulous or hirtellous beneath, hairs mainly <0.5 mm long; domatia absent or present as wide pit domatia .................................................................................................................................................................... C. micrantha

7’. Leaf blades coarsely hirsute beneath, with hairs mainly 0.7–1.5 mm long; pit or cave domatia present .......................... C. villosa