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Publications (10 of 84) Show all publications
Thulin, M. (2024). Studies of Asian 'Calliandra' lead to expansion of Sanjappa (Fabaceae-Caesalpinioideae). Nordic Journal of Botany, 2024(1)
Open this publication in new window or tab >>Studies of Asian 'Calliandra' lead to expansion of Sanjappa (Fabaceae-Caesalpinioideae)
2024 (English)In: Nordic Journal of Botany, ISSN 0107-055X, E-ISSN 1756-1051, Vol. 2024, no 1Article in journal (Refereed) Published
Abstract [en]

The genus Sanjappa, previously with the single species S. cynometroides in southern India, is expanded to include S. umbrosa, comb. nov., in northeastern India, Bangladesh, Myanmar and China (Yunnan) and S. vietnamica, sp. nov., in southern Vietnam. Sanjappa differs from Thailentadopsis, its sister genus in the Zapoteca clade, by having leaves with extrafloral nectaries in the form of sessile (versus stipitate) glands and elastically dehiscent, not moniliform pods (versus pods not elastically dehiscent and submoniliform). Sanjappa umbrosa and S. vietnamica differ from S. cynometroides by having bipinnate leaves with one pair of pinnae (versus simply pinnate leaves with two leaflets only) and a four-lobed (versus three-lobed) corolla. In S. umbrosa each pinna is 2-3-foliolate and paired stipular spines are mainly present on younger growth, whereas in S. vietnamica each pinna is (3-)4-5-foliolate and branches, including major ones, are armed with numerous paired spines with thickened bases. Synonymies, images and notes on distribution, habitat, taxonomy and conservation for the three species of Sanjappa are provided, and all names are typified. With the taxonomic changes proposed here, all Asian species previously treated as members of Calliandra have been accommodated outside this genus.

Place, publisher, year, edition, pages
John Wiley & Sons, 2024
Keywords
lectotypification, taxonomy, Thailentadopsis, Zapoteca clade
National Category
Biological Systematics
Identifiers
urn:nbn:se:uu:diva-522415 (URN)10.1111/njb.04241 (DOI)001113787400001 ()
Available from: 2024-02-13 Created: 2024-02-13 Last updated: 2024-02-13Bibliographically approved
Friis, I. & Thulin, M. (2023). (3001) Proposal to conserve the name Jatropha pelargoniifolia against Adenoropium forskaolii (Euphorbiaceae). Taxon, 72(6), 1373-1374
Open this publication in new window or tab >>(3001) Proposal to conserve the name Jatropha pelargoniifolia against Adenoropium forskaolii (Euphorbiaceae)
2023 (English)In: Taxon, ISSN 0040-0262, E-ISSN 1996-8175, Vol. 72, no 6, p. 1373-1374Article in journal (Refereed) Published
Place, publisher, year, edition, pages
John Wiley & Sons, 2023
National Category
Biological Systematics
Identifiers
urn:nbn:se:uu:diva-524296 (URN)10.1002/tax.13094 (DOI)001153976000022 ()
Available from: 2024-03-04 Created: 2024-03-04 Last updated: 2024-03-04Bibliographically approved
Hendriks, K. P., Kiefer, C., Al-Shehbaz, I. A., Bailey, C. D., van Huysduynen, A. H., Nikolov, L. A., . . . Lens, F. (2023). Global Brassicaceae phylogeny based on filtering of 1,000-gene dataset. Current Biology, 33(19), 4052-4068
Open this publication in new window or tab >>Global Brassicaceae phylogeny based on filtering of 1,000-gene dataset
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2023 (English)In: Current Biology, ISSN 0960-9822, E-ISSN 1879-0445, Vol. 33, no 19, p. 4052-4068Article in journal (Refereed) Published
Abstract [en]

The mustard family (Brassicaceae) is a scientifically and economically important family, containing the model plant Arabidopsis thaliana and numerous crop species that feed billions worldwide. Despite its relevance, most phylogenetic trees of the family are incompletely sampled and often contain poorly supported branches. Here, we present the most complete Brassicaceae genus-level family phylogenies to date (Bras-sicaceae Tree of Life or BrassiToL) based on nuclear (1,081 genes, 319 of the 349 genera; 57 of the 58 tribes) and plastome (60 genes, 265 genera; all tribes) data. We found cytonuclear discordance between the two, which is likely a result of rampant hybridization among closely and more distantly related lineages. To eval-uate the impact of such hybridization on the nuclear phylogeny reconstruction, we performed five different gene sampling routines, which increasingly removed putatively paralog genes. Our cleaned subset of 297 genes revealed high support for the tribes, whereas support for the main lineages (supertribes) was moder-ate. Calibration based on the 20 most clock-like nuclear genes suggests a late Eocene to late Oligocene origin of the family. Finally, our results strongly support a recently published new family classification, dividing the family into two subfamilies (one with five supertribes), together representing 58 tribes. This includes five recently described or re-established tribes, including Arabidopsideae, a monogeneric tribe accommodating Arabidopsis without any close relatives. With a worldwide community of thousands of researchers working on Brassicaceae and its diverse members, our new genus-level family phylogeny will be an indispensable tool for studies on biodiversity and plant biology.

Place, publisher, year, edition, pages
Elsevier, 2023
National Category
Botany Biological Systematics
Identifiers
urn:nbn:se:uu:diva-516558 (URN)10.1016/j.cub.2023.08.026 (DOI)001098689800001 ()37659415 (PubMedID)
Available from: 2023-11-28 Created: 2023-11-28 Last updated: 2023-11-28Bibliographically approved
Marhold, K., Kucera, J., Akopian, J. A., Alves, L. I. F., Alves, W. S., Baracho, G. S., . . . de Sousa, D. V. (2023). IAPT chromosome data 39-Extended version. Taxon, 72(5), 1189-1192
Open this publication in new window or tab >>IAPT chromosome data 39-Extended version
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2023 (English)In: Taxon, ISSN 0040-0262, E-ISSN 1996-8175, Vol. 72, no 5, p. 1189-1192Article in journal (Refereed) Published
Place, publisher, year, edition, pages
John Wiley & Sons, 2023
National Category
Evolutionary Biology Biological Systematics Botany
Identifiers
urn:nbn:se:uu:diva-522326 (URN)10.1002/tax.13077 (DOI)001098291500048 ()
Available from: 2024-02-16 Created: 2024-02-16 Last updated: 2024-02-16Bibliographically approved
Thulin, M. (2023). On Calliandra and Afrocalliandra (Fabaceae-Caesalpinioideae). Phytotaxa, 595(1), 1-6
Open this publication in new window or tab >>On Calliandra and Afrocalliandra (Fabaceae-Caesalpinioideae)
2023 (English)In: Phytotaxa, ISSN 1179-3155, E-ISSN 1179-3163, Vol. 595, no 1, p. 1-6Article in journal (Refereed) Published
Abstract [en]

The history of the genus Calliandra is reviewed, with particular reference to the two African species C. gilbertii and C. redacta. These species have been segregated as Afrocalliandra, based on proposed differences from a neotropical Calliandra. The stated differences are acalymmate, 7-celled (versus calymmate, 8-celled) polyads, presence (versus absence) of extrafloral nectaries, and presence (versus absence) of spines or thorns. A scrutiny of these claims shows that neither number of cells in the polyads, nor extrafloral nectaries, nor armature can be used to separate the two African species from the rest of the genus. The only remaining difference is the acalymmate polyads, a plesiomorphic state among mimosoids. On the contrary, a circumscription of Calliandra that includes also the two African species is, apart from being robustly supported by molecular data, also very strongly supported morphologically by 8-celled asymmetrical polyads with tail cells provided with viscin bodies (which are unique among legumes), by expanded stigmas with a wide area of polyad receptivity (which are unique among mimosoids), and by sagittate, petiolate and persistent cotyledons. A return to a circumscription of Calliandra that includes also the two African species is therefore proposed. Calliandra is subdivided into subg. Calliandra, with ca. 140 species in the Neotropics, and subg. Afrocalliandra, comb. et stat. nov., with C. gilbertii in Somalia and Kenya, and C. redacta in South Africa.

Place, publisher, year, edition, pages
Magnolia Press, 2023
Keywords
morphology, new combination, taxonomy
National Category
Biological Systematics
Identifiers
urn:nbn:se:uu:diva-504040 (URN)10.11646/phytotaxa.595.1.1 (DOI)000993123000001 ()
Available from: 2023-06-28 Created: 2023-06-28 Last updated: 2023-06-28Bibliographically approved
Swenson, U., Nylinder, S., Marticorena, A., Thulin, M. & Lepschi, B. (2023). Phylogenetic position and reinstatement of Gayella (Sapotaceae), a monotypic genus endemic to Chile with an Eocene origin in continental Australia. Taxon, 72(2), 360-374
Open this publication in new window or tab >>Phylogenetic position and reinstatement of Gayella (Sapotaceae), a monotypic genus endemic to Chile with an Eocene origin in continental Australia
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2023 (English)In: Taxon, ISSN 0040-0262, E-ISSN 1996-8175, Vol. 72, no 2, p. 360-374Article in journal (Refereed) Published
Abstract [en]

Pouteria splendens is the only native species of Sapotaceae in Chile, a species once placed in the monotypic genus Gayella and known as G. valparadisaea, but for a long time treated as a Pouteria. In a phylogenetic analysis, this species was placed in an Australasian clade, not with its presumed relatives in South America. We used Bayesian inference under a relaxed molecular clock in BEAST, nuclear ribosomal DNA (ETS, ITS), the nuclear gene RPB2, indel information, and 201 terminals to find the closest relative of P. splendens and to estimate the age of the disjunction between Australasia and South America. The taxon has an isolated phylogenetic position, being part of the cladeʼs backbone, and is placed with weak support as sister to Van-royena, another monotypic genus, but endemic to Australia. Our results justify reinstatement of Gayella with its single species G. valparadisaea. Gayella has a unique combination of morphological features including alternate, opposite or 3-whorled leaves, often on the same plant, a usually 6-lobed, rotate corolla with revolute corolla lobes giving the flower a star-like appearance, lacerate to dentate staminodes, and yellow-orange-red fruit with plano-convex cotyledons and an exserted radicle below the cotyledon commissure. The split between Gayella and Van-royena is estimated to the late Eocene at about 40.0 Ma (50.5–25.3 Ma). The hypothesis that the presence of Gayella in South America is a result of vicariance is consistent with the timing of the geological splits of southern Gondwana, as well as with evidence from fossil pollen, but long-distance dispersal is an alternative explanation that cannot be excluded. Gayella is restricted to an area with a Mediterranean-type climate in coastal central Chile, where it occurs in rocky places, ravines, and gullies, usually below 100 m altitude within reach of sea mist. Gayella valparadisaea is a rare plant, listed as Endangered (EN) in Chile, but it does not occur in any protected area. Considering the isolated phylogenetic position of this old lineage, we urge the Chilean authorities to increase the efforts towards protection of this species.

Place, publisher, year, edition, pages
John Wiley & Sons, 2023
National Category
Botany
Identifiers
urn:nbn:se:uu:diva-492742 (URN)10.1002/tax.12826 (DOI)000893757500001 ()
Available from: 2023-01-09 Created: 2023-01-09 Last updated: 2023-10-12Bibliographically approved
Thulin, M. (2023). The typification of Veronica peregrina (Plantaginaceae) reconsidered [Letter to the editor]. Phytotaxa, 585(3), 239-241
Open this publication in new window or tab >>The typification of Veronica peregrina (Plantaginaceae) reconsidered
2023 (English)In: Phytotaxa, ISSN 1179-3155, E-ISSN 1179-3163, Vol. 585, no 3, p. 239-241Article in journal, Letter (Other academic) Published
Abstract [en]

Veronica peregrina Linnaeus (1753: 14) was described in the protologue as “Veronica floribus solitariis sessilibus, foliis lanceolato-linearibus glabris obtusis integerrimis, caule erecto”, a phrase-name that was quoted directly from his previous treatment in Flora suecica (Linnaeus 1745: 6). Linnaeus (1753) stated about the origin of the plant: “Habitat in Europae hortis, arvisque” and also cited one synonym: “Veronica terrestris annua, folio polygoni, flore albo. Moris. Hist. 2. p. 322, sect. 3. t. 24. f. 19” (Morison 1680), based on material from England.

Place, publisher, year, edition, pages
Magnolia Press, 2023
National Category
Botany
Identifiers
urn:nbn:se:uu:diva-505493 (URN)10.11646/phytotaxa.585.3.6 (DOI)000993357300003 ()
Available from: 2023-06-20 Created: 2023-06-20 Last updated: 2023-06-20Bibliographically approved
Thulin, M. (2022). Fynd av hårnarv på Gotland väcker namnfrågor. Svensk Botanisk Tidskrift, 116(1), 44-51
Open this publication in new window or tab >>Fynd av hårnarv på Gotland väcker namnfrågor
2022 (Swedish)In: Svensk Botanisk Tidskrift, ISSN 0039-646X, Vol. 116, no 1, p. 44-51Article in journal (Other academic) Published
National Category
Botany
Identifiers
urn:nbn:se:uu:diva-492710 (URN)
Available from: 2023-01-09 Created: 2023-01-09 Last updated: 2023-06-09Bibliographically approved
Phillipson, P., Lewis, G., Andriambololonera, S., Rakotoniriana, N., Thulin, M. & Wilding, N. (2022). Leguminosae (Fabaceae), legumes. In: Goodman, Steven M., et al. (Ed.), The New Natural History of Madagascar: (pp. 598-617). Princeton University Press
Open this publication in new window or tab >>Leguminosae (Fabaceae), legumes
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2022 (English)In: The New Natural History of Madagascar / [ed] Goodman, Steven M., et al., Princeton University Press, 2022, p. 598-617Chapter in book (Refereed)
Abstract [en]

The Leguminosae, or Fabaceae as it is alternatively known, is the world’s third largest flowering plant family: it includes close to 20,000 species spread across ~800 currently recognized genera (LPWG 2017; Angiosperm Phylogeny Website 2019; G. P. Lewis, unpublished data). The family is extremely diverse, ranging from small annual species to shrubs, lianas, and some of the largest trees on the planet, and its members occur in both humid and dry regions in both tropical and temperate parts of the world. The family is an important source of food plants, notably peas, beans, lentils, chickpeas, peanuts, and soya, as well...

Place, publisher, year, edition, pages
Princeton University Press, 2022
National Category
Botany
Identifiers
urn:nbn:se:uu:diva-493230 (URN)978-0-691-22262-2 (ISBN)978-0-691-22940-9 (ISBN)
Available from: 2023-01-12 Created: 2023-01-12 Last updated: 2023-06-12Bibliographically approved
Frohlich, M. W., Sage, R. F., Craven, L. A., Schuster, S., Gigot, G., Hilger, H. H., . . . Chase, M. W. (2022). Molecular phylogenetics of Euploca (Boraginaceae): homoplasy in many characters, including the C-4 photosynthetic pathway. Botanical journal of the Linnean Society, 199(2), 497-537
Open this publication in new window or tab >>Molecular phylogenetics of Euploca (Boraginaceae): homoplasy in many characters, including the C-4 photosynthetic pathway
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2022 (English)In: Botanical journal of the Linnean Society, ISSN 0024-4074, E-ISSN 1095-8339, Vol. 199, no 2, p. 497-537Article in journal (Refereed) Published
Abstract [en]

We present a phylogenetic analysis using plastid (matK, rbcL) and nuclear (nrITS) DNA for diverse Euploca spp. (formerly Heliotropium section Orthostachys) from the worldwide distribution of a genus and including species encompassing the wide physiological and morphological diversity of the genus. Our results indicate that some remarkably complex features arose multiple times in parallel in Euploca, including attributes of its subsections under section Orthostachys, notably plants that, above ground, consist almost entirely of inflorescences. To elucidate in greater detail the distribution of C-4 species in Euploca and Heliotropium s.s., we made > 800 delta C-13 determinations, including some from the traditional genus Tournefortia. We greatly increase the number of proven C-4 species in Euploca, but found none outside Euploca. Of the tested Euploca spp., c. 28% are C-3 or intermediate in carbon fixation pathway. Our phylogenetic results indicate four parallel/convergent acquisitions of C-4 photosynthesis or fewer origins with subsequent loss in some species.

Place, publisher, year, edition, pages
Oxford University Press (OUP), 2022
Keywords
C-2 photosynthesis, C-3, C-4 intermediate, contagious distribution, desert flora, Heliotropium section Orthostachys, inflorescence plant, seed set modelling
National Category
Botany
Identifiers
urn:nbn:se:uu:diva-476112 (URN)10.1093/botlinnean/boab082 (DOI)000797154600001 ()
Available from: 2022-06-08 Created: 2022-06-08 Last updated: 2022-06-10Bibliographically approved
Organisations
Identifiers
ORCID iD: ORCID iD iconorcid.org/0000-0001-5970-8343

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