Systematic Revision of the Genus Pancratium L. (Amaryllidaceae) in Egypt with a New Addition
In Egypt, taxonomic aspects of the genus Pancratium L. (Amaryllidaceae, Pancratieae) were thoroughly studied to point out the most reliable characters for taxon delimitation. Here, we base our species on both geographical and morphological features. The detailed taxonomic revision of genus Pancratium is based on field studies and the examination of representative specimens together with the authentic types deposited in the major herbaria of Egypt and Kew. Variations in the aerial scape, spathe, perianth, corona-teeth, pistil, stamens, capsules and seeds, as well as those of leaf base and leaf orientation are good markers to separate the different species. As a result, five species are recognized, including P. trianthum as a new record to the flora of Egypt. It is restricted to the south-eastern corner of Egypt (Gebel Elba region) and being unique in possessing solitary spathe and long attenuate leaf base. A specific key and descriptions are given with typifications.
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