Lomandra marginata (Asparagaceae), a shy-flowering new species from south-western Australia
Terry D. Macfarlane A C and John G. Conran BA Western Australian Herbarium, Science and Conservation Division, Department of Parks and Wildlife, Locked Bag 104, Bentley Delivery Centre, WA 6983, Australia.
B ACEBB & SGC, School of Biological Sciences, Benham Building DX 650 312, North Terrace, The University of Adelaide, SA 5005, Australia.
C Corresponding author. Email: terry.macfarlane@dpaw.wa.gov.au
Australian Systematic Botany 27(6) 421-426 https://doi.org/10.1071/SB14045
Submitted: 11 November 2014 Accepted: 13 March 2015 Published: 29 June 2015
Abstract
Lomandra marginata T.D.Macfarl. & Conran is described as a new species and illustrated by photographs and a distribution map. Recognised initially from vegetative plants during a biological survey at Lochada Station, it was realised subsequently that the species is widespread from Geraldton to Corrigin. However, it apparently flowers only occasionally under favourable conditions, so earlier collections were mostly vegetative. Lomandra marginata is placed in L. series Sparsiflorae on the basis of possessing a narrow floral bract that does not encircle the pedicel and a bracteole, when present, offset rather than opposite the bract. It has distinctive membranous leaf margins resembling those of the related genus Chamaexeros and the longest pedicels in the genus, mostly 10–16 mm long, on which are borne white flowers resembling those of L. effusa (Lindl.) Ewart. Although L. effusa is the most similar species in flower and inflorescence and is also a member of L. series Sparsiflorae, it differs vegetatively by having distinctly two-toothed leaf tips.
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