On Monocarpus (Monocarpaceae, Marchantiopsida), an isolated salt-pan complex thalloid liverwort
Laura L. Forrest A E , David G. Long A , D. Christine Cargill B , Michelle L. Hart A , Josephine Milne C , Daniela B. Schill A , Rodney D. Seppelt D and Juan Carlos Villarreal A
+ Author Affiliations
- Author Affiliations
A Royal Botanic Garden Edinburgh, 20A Inverleith Row, Edinburgh EH3 5LR, Scotland.
B Australian National Herbarium Canberra, GPO Box 1600, Canberra, ACT 2601, Australia.
C Royal Botanic Gardens Victoria, Private Bag 2000, South Yarra, Vic. 3141, Australia.
D Tasmanian Herbarium, PO Box 5058, UTAS LPO, Sandy Bay, Tas. 7005, Australia.
E Corresponding author. Email: l.forrest@rbge.ac.uk
Australian Systematic Botany 28(3) 137-144 https://doi.org/10.1071/SB15012
Submitted: 1 April 2015 Accepted: 20 July 2015 Published: 13 November 2015
Abstract
The phylogenetic placement of Monocarpus sphaerocarpus D.J.Carr (Monocarpaceae), a member of the complex thalloid liverworts with highly specialised morphology, presumably related to its saltpan habitat, has been determined on the basis of molecular data. Within the complex thalloid liverworts, Monocarpus resolves as sister to the Sphaerocarpales clade. A new line drawing of Monocarpus is provided, as are the first colour photographs of living plants. Detailed ornamentation of the spores of Monocarpus collections from Australia and South Africa, as revealed by scanning electron micrography, is reported, and some of the morphological features that unite and separate Monocarpus and the Sphaerocarpales s.str. are discussed.
Additional keywords: air chambers, involucre.
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