The little-known Tetragonia pentandra, long regarded as a member of Aizoaceae in the Horn of Africa region, is included in a phylogenetic analysis using ITS sequence data of members of Betoideae (Chenopodiaceae). Patellifolia, including Tetragonia pentandra, is strongly supported as monophyletic and weakly supported as sister to a clade with Aphanisma, Oreobliton and Beta. Within Patellifolia relationships are largely unresolved and, as the characters that have been used to distinguish taxa in the group are found to be unreliable, we propose that all members of the Patellifolia clade are treated as a single variable species, P. procumbens. Synonymies of Patellifolia and of P. procumbens are provided and two names are lectotypified. The distribution of P. procumbens is mapped and shown to be widely disjunct between the W Mediterranean region/Macaronesia and the Horn of Africa region, with isolated occurrences also in the Saharan mountains.
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1 June 2010
Identity of Tetragonia pentandra and taxonomy and distribution of Patellifolia (Chenopodiaceae)
Mats Thulin,
Anders Rydberg,
Joachim Thiede
I. B. Balfour
1884: Diagnoses plantarum novarum phanerogamarum Socotrensium, etc. Pars quarta (supplementum). — Proc. Roy. Soc. Edinburgh 12: 402–411. Google Scholar
D. Bramwell
&
S. Bramwell
2001: Wild flowers of the Canary Islands, ed. 2. — Madrid. Google Scholar
G. J. Curtis
1968: Observations on fruit shape and other characters in the species of the section Patellares, genus Beta. — Euphytica 17: 485–491. [
CrossRef
] Google Scholar
V. Dalgaard
1986: Chromosome studies in flowering plants from Macaronesia. — Anales Jard. Bot. Madrid 43: 83–111. Google Scholar
M. G. Gilbert
1993:
Aizoaceae.
— Pp. 111–117 in:
M. Thulin
(ed.), Flora of Somalia 1. — Kew. Google Scholar
A. M. Gutiérrez Bustillo
1990:
Patellifolia.
— Pp. 482–484 in:
S. Castroviejo
,
M. Lainz
,
G. López González
,
P. Montserrat
,
F. Muñoz Garmendia
,
J. Paiva
&
L. Villar
(ed.), Flora iberica 2. — Madrid. Google Scholar
S. Hohmann
,
J. W. Kadereit
&
G. Kadereit
2006: Understanding Mediterranean-Californian Disjunctions: Molecular Evidence From Chenopodiaceae-Betoideae. —
Taxon
55: 67–78. [
CrossRef
] Google Scholar
G. Kadereit
,
S. Hohmann
&
J. W. Kadereit
2006: A synopsis of Chenopodiaceae subfam. Betoideae and notes on the taxonomy of Beta. —
Willdenowia
36: 9–19. [
CrossRef
] Google Scholar
M. A. Larkin
,
G. Blackshields
,
N. P. Brown
,
R. Chenna
,
P. A. McGettigan
,
H. McWilliam
,
F. Valentin
,
I. M. Wallace
,
A. Wilm
,
R. Lopez
,
J. D. Thompson
,
T. J. Gibson
&
D. G. Higgins
2007: Clustal W and Clustal X version 2.0. —
Bioinformatics
23: 2947–2948. [
CrossRef
] Google Scholar
K. Larsen
1962: Contribution to the cytology of the endemic Canarian element. — Bot. Not. 115: 196–202. Google Scholar
C. H. B. A. Moquin-Tandon
1849:
Beta.
— Pp. 54–58 in:
A. de Candolle
(ed.), Prodromus systematis naturalis regni vegetabilis 13(2). — Parisiis. Google Scholar
S. Santoni
&
A. Bervillé
1992: Characterization of the nuclear ribosomal DNA units and phylogeny of Beta L. wild forms and cultivated beets. — Theor. Appl. Genet. 83: 533–542. [
CrossRef
] Google Scholar
A. J. Scott
,
B. V. Ford-Lloyd
&
J. T. Williams
1977:
Patellifolia, nomen novum (Chenopodiaceae). — Taxon26: 284. [
CrossRef
] Google Scholar
Y. Shen
,
B. V. Ford-Lloyd
&
H. J. Newbury
1998: Genetic relationships within the genus Beta determined using both PCR-based marker and DNA sequencing techniques. —
Heredity
80: 624–632. [
CrossRef
] Google Scholar
R. Staden
,
K. Beal
&
J. K. Bonfield
1998: The Staden package. — Pp. 115–130 in:
S. Misener
&
S. A. Krawets
(ed.), Bioinformatics methods and protocols. — Computer Meth. Molec. Biol. 132. Google Scholar
D. L. Swofford
2002: PAUP*4b10. Phylogenetic Analysis Using Parsimony (*and other methods). — Sunderland. Google Scholar
J. Thiede
1994: New aspects of the phytogeographic relations of Macaronesian Crassulaceae.
— Pp. 1121–1143 in:
J. H. Seyani
&
A. C. Chikuni
(ed.). Proceedings of the XIIIth plenary meeting of AETFAT, Zomba, Malawi, 2. — Limbe. Google Scholar
J. Thiede
2004: Phylogenetics, systematics and classification of the Aizoaceae: a reconsideration based on molecular data. — Schumannia 4: 51–58. Google Scholar
M. Thulin
1994: Aspects of disjunct distributions and endemism in the arid parts of the Horn of Africa, particularly Somalia. — Pp. 1105–1119 in:
J. H. Seyani
&
A. C. Chikuni
(ed.), Proceedings of the XIIIth plenary meeting of AETFAT, Zomba, Malawi, 2. — Limbe. Google Scholar
M. Thulin
2006: Appendix. Additions to Flora of Somalia, vol. 1–4. — Pp. 559–585 in:
M. Thulin
(ed.),
Flora of Somalia
3. — Kew. Google Scholar
E. Ulbrich
1934:
Chenopodiaceae.
— Pp. 379–584 in:
A. Engler
&
K. Prantl
(ed.), Die natürlichen Pflanzenfamilien, ed. 2, 16c. — Leipzig. Google Scholar
Willdenowia
Vol. 40 • No. 1
Jun 2010
Vol. 40 • No. 1
Jun 2010
Beta
disjunct distribution
Horn of Africa
ITS
Macaronesia
molecular phylogeny
nomenclature