A new autumn-flowering species of Allium (Liliaceae) from the island of Sifnos (Cyclades, Greece)

摘要

Allium apolloniensis is described as a species new to science, illustrated and compared with related species of A. sect. Codonoprasum. It is apparently restricted to the Cyclades in the central Aegean and of particular interest for the phytogeny of the genus because it is tetraploid (2n = 4x = 32). During our investigations on the Greek flora, an interesting autumn-flowering species of Allium L. was found for the first time in October 2003 by the first author on the island of Sifnos (Cyclades, central Aegean). Flower colour and phenology were reminiscent of A. callimischon Link belonging to A. sect. Brevispatha Vals., but important diagnostic features revealed it actually as a member of A. sect. Codonoprasum Rchb. Fieldwork in the following year provided two other localities on Sifnos. The adequate material then collected permitted us to recognize it as a species new to science, distinct in morphology and karyotype from related species of A. sect. Codonoprasum.