Knox et al.—Lobelia glaberrima sp. nov.

New Zealand Journal of Botany abstracts

Phylogenetic position and relationships of Lobelia glaberrima (Lobeliaceae), a new alpine species from southern South Island (New Zealand)

E. B. Knox

Indiana University Herbarium
Department of Biology
Indiana University
Jordan Hall 142
1001 East Third Street
Bloomington, Indiana 47405, USA

P. B. Heenan

Allan Herbarium
Landcare Research
PO Box 40
Lincoln 7640, New Zealand

A. M. Muasya

Botany Department
University of Cape Town
7701 Rondebosch, South Africa

B. G. Murray

School of Biological Sciences
The University of Auckland
Private Bag 92019
Auckland Mail Centre
Auckland 1142, New Zealand

Abstract Lobelia glaberrima is a newly described species from mountainous parts of the southern South Island of New Zealand. The morphology of L. glaberrima is most similar to L. macrodon, but it is distinguished from that species by a suite of mainly floral characters. These include L. glaberrima having narrower calyx lobes, a corolla with a shorter tube and smaller lobes, shorter stamens with smaller anthers, a smaller ovary with a shorter style, and a weakly pungent scent. Chloroplast DNA evidence indicates that L. glaberrima is most closely related to L. linnaeoides. However, it differs from that species by shorter peduncles, wider corolla lobes, and an indehiscent globose capsule. The chromosome number of L. glaberrima is 2n = 28, and this also distinguishes it from L. linnaeoides and L. macrodon (2n = 14).

Keywords Lobeliaceae; Lobelia glaberrima; Lobelia linnaeoides; Lobelia macrodon; Lobelia roughii; Pratia; taxonomy; phylogeny; cpDNA; New Zealand flora

B07026; Online publication date 26 March 2008; Received 23 July 2007; accepted 22 November 2007

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