Article

C. soleirolii Duby s.l. has been studied by means of biosystematic analysis of dried and living specimens, in natural enviroments and under eultivation. Two species endemic of Corsica have been recognized: C. sfenopefalum Grenier and C. soleirolii Duby. C. sfenoperalum is widespread over 750 m, on screes and dry grasslands. It presents two ploidy levels, diploid and tetraploid. The latter is the most widespread. A dwarf morphotype occurring in the highest sites of the distribution area, has been distinguished as C. sfenopefalum varo nanum Barberis & al. varo 110V. C. sfenopefalum seems to be related to C. utriense Barberis, an endemic species of Ligurian-Piedmontese Apennines. C. soleirolii is restricted to the sumrnit area, over 1800 m, of Mount Renoso, Mount d'Oro and Mount Rotondo. It is a diploid relic entity. A detailed description, a new iconography and information on nomenclature, ecology and distribution are provided for both taxa.