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Seed and capsule morphology of Iranian perennial species of Euphorbia (Euphorbiaceae) and its phylogenetic application

Title data

Pahlevani, Amir Hossein ; Liede-Schumann, Sigrid ; Akhani, Hossein:
Seed and capsule morphology of Iranian perennial species of Euphorbia (Euphorbiaceae) and its phylogenetic application.
In: Botanical Journal of the Linnean Society. Vol. 177 (2015) Issue 3 . - pp. 335-377.
ISSN 1095-8339
DOI: https://doi.org/10.1111/boj.12245

Abstract in another language

Of the 480 species of Euphorbiasubgenus Esula, c. 290 occur in the Mediterranean and Irano-Turanian regions. Turkey and Iran are the most species-rich countries in Asia with 83 and 74 species, respectively. Following our previous paper on annual species of Iranian Euphorbia, we studied the quantitative and qualitative macro- and micromorphological traits of seeds and capsules of 47 perennial species, including E. ferdowsiana sp. nov., E. sulphurea sp. nov. and E. glareosa, as a first report from Iran. A key for all Iranian perennial Euphorbiaspp. based on seed and capsule morphology is provided. The phylogenetic relationships of Iranian species based oninternal transcribed spacer (ITS) nuclear and ndhFplastid regions are updated and used for the characterizationof the synapomorphies of each clade. Capsule shape, seed shape, seed surface and shape of the caruncle have been found to be homoplastic, whereas the presence or absence of granulate elements on seed surfaces represents aphylogenetically important trait for section delimitation. The capsule surface is synapomorphic for several sections, includingHelioscopia (tuberculate-verrucose), Myrsiniteae(vesiculate) and Esula(granulate), and seed shape issynapomorphic for sectionsHelioscopia (ellipsoidal),Myrsiniteae (ovoid-quadrangular) and Herpetorrhizae(pseudo-hexahedral). Reversals have also taken place in some features, including capsule surface (E. mazandaranica,E. altissima) and seed shape (E. densa, E. aleppica). It seems that ecarunculate seeds are plesiomorphic in sectionsHelioscopia (E. eriophora) and Herpetorrhizae (E. consanguinea and E. turczaninowii).

Further data

Item Type: Article in a journal
Refereed: Yes
Additional notes: BAYCEER127769
Institutions of the University: Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Biology > Chair Plant Systematics
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Biology > Chair Plant Systematics > Chair Plant Systematics - Univ.-Prof. Dr. Sigrid Liede-Schumann
Research Institutions > Research Centres > Bayreuth Center of Ecology and Environmental Research- BayCEER
Faculties
Faculties > Faculty of Biology, Chemistry and Earth Sciences
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Biology
Research Institutions
Research Institutions > Research Centres
Result of work at the UBT: Yes
DDC Subjects: 500 Science
Date Deposited: 06 Jul 2015 10:24
Last Modified: 06 Jul 2015 10:24
URI: https://eref.uni-bayreuth.de/id/eprint/15796