Original Research

New species of Iridaceae from the Hantam-Roggeveld Centre of Endemism, and the Bokkeveld, Northern Cape, South Africa

J. C. Manning, P. Goldblatt
Bothalia | Vol 36, No 2 | a352 | DOI: https://doi.org/10.4102/abc.v36i2.352 | © 2006 J. C. Manning, P. Goldblatt | This work is licensed under CC Attribution 4.0
Submitted: 21 August 2006 | Published: 21 August 2006

About the author(s)

J. C. Manning, Compton Herbarium, South African National Biodiversity Institute, South Africa
P. Goldblatt, BA. Krukoff Curator of African Botany. Missouri Botanical Garden, United States

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Abstract

Three new species of Iridaceae are described from the Bokkeveld and Roggeveld Escarpments.  Ixia amethystina. a member of section Dichone, is endemic to the edge of the Roggeveld Escarpment. It shares an unusual, inclined spike that is nodding in bud with  I. trifolia but is distinguished by its blackish purple (not yellow) anthers, narrower leaves 1.5-2.0 mm wide, medium-textured corm tunics that form a distinct neck at the base of the stem, and short style branches 2.0-2.5 mm long.Moraea marginata. another Roggeveld endemic, is a member of section Polvanthes and florally similar to M. fistulosa and M. monticola but differs in its linear, channelled leaves 5-7 mm wide, with unusual, thickened margins. Romulea singularis. from the edge of the Kobee River Valley in the Bokkeveld Mountains, is a member of section  Ciliatae. It is unique in the genus in its narrowly funnel-shaped, mauve to purple flowers with slender perianth tube 10-11 mm long, and unusually long filaments, 8-9 mm long, inserted in the lower half of the tube.


Keywords

Iridaceae, <i>Ixia</i> <i>amethystina</i>J.C.Manning & Goldblatt. <i>Moraea marginata</i> J.C.Manning & Goldblatt. new species. <i>Romulea</i> <i>singularis</i> J.C.Manning & Goldblatt; South Africa; taxonomy

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