TAXONOMY AND PHYTOGEOGRAPHY OF KOBRESIA SIBIRICA (TURCZ. EX LEDEB.) BOECK. AND RELATED TAXA (CYPERACEAE)

Abstract

Abstract: Kobresia sibirica (Turcz.ex Ledeb.) Boeck.from Siberia, K.hyperborea Porsild and K.macrocarpa Clokey from North America were studied.There are no significant differences among the three species, and their female flowers are all provided with a perianth of one to three small scales.Therefore, they are conspecific.Kobresia hyperborea, including varieties alaskana Duman and lepagei Duman, and K.macrocarpa are reduced to synonyms of K.sibirica.The species is distributed in the arctic and subarctic Asia and NW North America.It might have evolved in Asia, and migrated from eastern Siberia through the Bering Strait to North America.

Key words: Kobresia sibirica, Taxonomy, Phytogeography

Zhang Shu-ren. TAXONOMY AND PHYTOGEOGRAPHY OF KOBRESIA SIBIRICA (TURCZ. EX LEDEB.) BOECK. AND RELATED TAXA (CYPERACEAE)[J]. Bulletin of Botanical Research, 1998, 18(3): 372-376.

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TAXONOMY AND PHYTOGEOGRAPHY OF KOBRESIA SIBIRICA (TURCZ. EX LEDEB.) BOECK. AND RELATED TAXA (CYPERACEAE)

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