Data from: A new species in Iris section Pseudoregelia (Iridaceae) from Gansu, China

Iris longnanensis Z.F. Bai, Y.E. Xiao, F.Y. Yu (Iridaceae: subgenus Iris
section Pseudoregelia), a novel herbaceous species native to the arid and
thermal valleys of Longnan city, Gansu province, China, is herein
described and illustrated. Morphologically akin to I. leptophylla
Lingelsheim, I. longnanensis is distinguished by its dense, persistent
foliage and strikingly short new leaves (6.6–15.1 cm) during the blooming
season, along with its distinctive purplish-brown flowering stem.
Phylogenetic analyses based on chloroplast DNA sequences corroborate the
classification of I. longnanensis within section Pseudoregelia,
highlighting the significance of this new species discovery for
understanding the evolution and diversity within the genus.