Centaurea fusiformis Blakelock, 1589

Negaresh, Kazem, 2020, Typification of three Iraqi endemic taxa of Centaurea L. (Asteraceae, Cardueae), Adansonia (3) 42 (15), pp. 255-260 : 256

Centaurea fusiformis Blakelock

( Fig. 2 )

Kew Bulletin 4 (1): 47 (1949).

TYPE. — Iraq. Kurdistan , Dohuk [Duhok] , Rustam , 450 m, 10.X.1931, E. R. Guest 1589 (lecto-, first-step designated byWagenitz [2006: 349] K!; second-step lecto-, designated here, K [ K000794106 ]!; isolecto-, K [ K000794107 ]!) .

REMARKS

Blakelock (1949) in the protologue of Centaurea fusiformis cited “ Iraq, Dohuk, 450 m, 10.X.31, E. R. Guest 1589 (type)”. In Flora Iranica, Wagenitz (1980) cited “type: Guest 1589, K, fragm.W!”. There is no specimen of Centaurea in Guest’s collection at W. Wagenitz (2006) cited “Type: Kurdistan, Dohuk, 1500 fr., 10.X.1931, Guest 1589 (K)”. Pertaining to the type specification provided in the protologue, two specimens of Guest 1589 were traced at K (K000794106 and K000794107). As there is no evidence that Blakelock used only one specimen for describing the species, the type citation by Wagenitz (2006) has to be accepted as the first-step lectotype as it cannot be ascertained which of the specimens at K was selected by him as lectotype. Thus a second-step lectotype has to be designated followingTurland et al. (2018: art. 9.15). The best one and better preserved sheet, K000794106, is designated here as the lectotype, because it is in better condition than another specimen and shows all relevant characters with the protologue.

Figures

FIG. 2. — Lectotype (second-step) of Centaurea fusiformis Blakelock, Guest 1589 (K000794106).