Campanula

Gardère, Mathieu L., Florence, Jacques, Muller, Serge, Savriama, Yoland & Dubuisson, Jean-Yves, 2021, Codonographia Gorgonum, or the description of a pleiad of bellflowers (Campanula, Campanulaceae) from the Cabo Verde archipelago, Candollea 76 (1), pp. 13-40 : 16

Key to the Cabo Verdean species of Campanula

1. Corolla campanulate or infundibuliform; roof of the ovary glabrous and flat .......................................................... 2

1a. Corolla tubular (rarely urceolate); roof of the ovary pubescent and conical ...................................... 2. C. bravensis

2. Corolla campanulate ................................................... 3

2a. Corolla infundibuliform .............................................. 4

3. Corolla with inflexion point in the upper third, throat slightly constricted; calyx-lobes triangular ...................... .................................................................. 1. C. jacobaea

3a. Corolla with inflexion point in the middle, throat not constricted; calyx-lobes deltoid ......... 7. C. cochleromena

4. Corolla constricted in the median part ..... 3. C. feijoana

4a. Corolla gradually widening without any visible constriction .............................................................................. 5

5. Corolla narrowly flared, style included; calyx-lobes triangular, margin not or weakly revolute ............................ 6

5a. Corolla widely flared, style exserted; calyx-lobes widely triangular, margin clearly and distinctly revolute ............ ....................................................... 5. C. monteverdensis

6. Corolla-tube ob-tronconical straight, 20 –34 mm long; rosette-leaves narrowly obovate to narrowly elliptic, (3–) 4–7.5(–10) × (0.8–)1–2.5(–3) cm, surface matt and pubescent with scattered hispidulous trichomes adaxially, with margin obscurely undulate to plane, primary and secondary veins hispidulous to hispid abaxially; margin of calyxlobes hispidulous to hispid ..................... 6. C. fransinea

6a. Corolla-tube ob-tronconical straight to concave, 16–20 mm long; rosette-leaves narrowly elliptic to obovate, (1–)1.5–2.7(–3.3) × (0.5–)0.7–1(–1.2) cm, surface glossy and glabrescent adaxially, with margin always clearly undulate, primary and secondary veins strigillose to strigose abaxially; margin of calyx-lobes strigillose to strigose .............................................................. 4. C. vicinituba