Taraxacum

Štepánek, Jan & Kirschner, Jan, 2013, A revision of mountain species of the genus Taraxacum F. H. Wigg. (Compositae) in Corsica, Candollea 68 (1), pp. 29-39 : 30-31

Key to the Corsican Taraxacum

1. Outer bracts arcuate-reflexed, their tips curved backwards and almost touching the scape below capitulum ............... ........................................................... T.lacistophylloides

1a. Outer bracts appressed, loosely appressed, erect, erectpatent to patent-arcuate................................................... 2

2. Achenes deep red to deep red-brown....... T.parnassicum

2a. Achenes variously pale grey-brown, straw-brown or cinnamon-brown, always without the reddish hue ......... 3

3. Outer involucral bracts with a distinct, broad whitish border.............................................................................. 4

3a. Outer involucral bracts unbordered or with a very narrow, indistinct paler border..................................................... 5

4. Pollen absent; outer involucral bracts with border 0.15- 0.3 mm wide; stigmas dark discoloured, with blackish hairs outside......................................................... T.pomposum

4a. Pollen present; outer involucral bracts with border (0.3-) 0.5-1 mm wide; stigmas paler discoloured, pale greyish green, with pale hairs outside....................... T.renosense

5. Ligules tubular (margins fused); pollen absent or rudimentary, sparse; achene cone 0.5-0.8 mm, rostrum 3.5- 7.5 mm ............................................................ T.litardieri

5a. Ligules flat to canaliculate; pollen abundantly present; achene cone 0.8-0.9 mm, rostrum to 9.5 mm .................... .............................................................. T.cucullatiforme