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1.
M. Ranjbar 《Nordic Journal of Botany》2004,24(5):523-531
Two new species, Astragalus ghahremaninejadii and A. kharvanensis are described from Iran and illustrated. They belong to A. sect. Dissitiflori , which contains species with bifurcate hairs. The first is similar to A. pendulinus, A. baldschuanicus, A. kustanaicus and properly A. marguzaricus and only known from a single collection close to the Turkmenistan frontier. The second shows morphological similarities with A. dendroproselius especially A. viridis. Also A. dendroproselius is reported as a new record for the flora of Iran. 相似文献
2.
Massoud Ranjbar 《Nordic Journal of Botany》2009,27(4):328-335
A diagnostic key, and new data are provided for seven species of Astragalus sect. Trachycercis , which occur within the area covered by the Flora of Iran. Astragalus brevipedunculatus Ranjbar is described as new, and A. armeniacus Boiss. is reported as new for the flora of Iran. The micromorphology of the seed coat surface of ten Astragalus taxa has been studied by SEM. Considerably different types of sculpturing at species level and similarities between related taxa were observed. In addition, differences between A . sect. Trachycercis and the closely related sections A . sect. Erioceras and A. sect. Wettsteiniana are discussed. Astragalus durandianus , A. pseudoshebarensis and A. shebarensis , which all have strongly inflated pods, are transferred from A . sect. Erioceras to A. sect. Wettsteiniana. Astragalus brevipedunculatus sp. nov., described from a small region near Aras River in Iran, is the only geographically isolated species of the section. Members of the section prefer habitats from coastal dune climates of the Azarbaijan Sharqi Province to the Armenian and Azarbaijan frontiers, although possibly also growing in the adjacent southern parts of Armenia and Azarbaijan. Astragalus brevipedunculatus sp. nov. is the only species of the section in Iran and neighboring countries that has few pairs of leaflets and is completely glabrous. The new species should be considered as a 'Critically Endangered' (CR) following the IUCN criteria. A distribution map for A. brevipedunculatus and A. armeniacus is presented. 相似文献
3.
ROYA KARAMIAN MASSOUD RANJBAR 《Botanical journal of the Linnean Society. Linnean Society of London》2005,147(3):363-368
Astragalus rahiminejadii , a new species endemic to Iran, is described and illustrated. This species, which belongs to section Astragalus , is confined to the western part of Iran (Prov. Kermanshah) and is known only from a single population. Seed testa morphology as viewed under the scanning electron microscope is discussed and photomicrographs are provided. In addition, the geographical distribution and ecology of the species belonging to this section are discussed. © 2005 The Linnean Society of London, Botanical Journal of the Linnean Society , 2005, 147 , 363–368. 相似文献
4.
Astragalus zarreianus. is described and illustrated from Iran. It belongs to section Astragalus. This new species confined to western part of Iran (Prov. Illam) from only one location. A key to the species of the section known from Iran is prepared. Differences between the section and the closely related sections are discussed. On the basis of some important trends, an informal grouping is undertaken for yellow flower Astragali. Moreover, A. pseudo-orthocarpus is considered as a valid species in this treatment and differences with its closest relatives are described. 相似文献
5.
Astragalus sichuanensis, a new species from Maowen Xian, Sichuan province, is described and illustrated. The relationship between this species and A. tongolensis is discussed. 相似文献
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A key to and new findings on the Astragalus sect. Erioceras, are given for the 10 species of this section, which occur within the area covered by the flora of Iran. One species, Astragalus neo-sytinii , is described as a new species. A. sympileicarpus is reported as a new record for the flora of Iran. A. viridis is transferred from A. sect. Erioceras to sect. Xiphidium Sect. Acantherioceras is reduced to the level of subsection. The differences between that section and closely related sections are discussed. 相似文献
8.
The systematic position of Astragalus semnanensis is studied. Morphological and micromorphological features of this species are not in accordance with the old position of this species as a member of A. sect. Leucocercis. Within A. subgen. Astragalus this species is intermediate between A. sect. Acanthophace and A. sect. Megalocystis , but it shows critical differences from them. Therefore, a new section, A. sect. Semnanenses is described. 相似文献
9.
Burnell JN 《Plant physiology》1979,63(6):1095-1097
l-Cysteinyl-tRNA synthetases (EC 6.1.1.16) from four Astragalus species were partially purified. The substrate specificities of the cysteinyl-tRNA synthetase from three selenium accumulator species (A. crotalariae, A bisulcatus, and A. racemosus) were compared with those from two nonaccumulator species (A. lentigenosus and Phaseolus aureus). All species had similar K(m) values for cysteine, selenocysteine, and alpha-aminobutyric acid except A. bisulcatus which failed to use selenocysteine as a substrate and which had a K(m) for cysteine four times greater than the K(m) values for other species. 相似文献
10.
A new species of the genus Astragalus, namely A. hakkianus Bagheri, Maassoumi & Rahimin. is described and illustrated from NW Iran. It is most closely related to A. pereshkhoranicus Maassoumi & F. Ghahrem. and A. chehreganii Zarre & Podlech. (© 2013 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim) 相似文献
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M. RANJBAR R. KARAMIAN 《Botanical journal of the Linnean Society. Linnean Society of London》2003,143(2):197-200
Astragalus neo-assadianus (Fabaceae), a new species endemic to Iran, is described and illustrated. This species belongs to A. sect . Alopecuroidei and is distinct and interesting among the Iranian species. It is confined to the north-eastern part of Iran (Khorasan Province) and only known from a single collection close to the Turkmenistan frontier. © 2003 The Linnean Society of London, Botanical Journal of the Linnean Society , 2003, 143 , 197–200. 相似文献
13.
MASSOUD RANJBAR ROYA KARAMIAN 《Botanical journal of the Linnean Society. Linnean Society of London》2003,143(4):443-447
New findings are given for the Astragalus sect. Incani , which occurs within the area covered by the Flora of Iran. Astragalus wojciechowskianus Ranjbar is described as a new species. A. procerus Boiss. & Hausskn . , A. cottonianus Aitch. & Baker, A. achundovii Grossh., A. orduabadensis Grossh. and A. glaucophyllus Bunge are reported as new records for the flora of Iran . © 2003 The Linnean Society of London, Botanical Journal of the Linnean Society , 2003, 143 , 443–447. 相似文献
14.
ZEKI AYTAC MURAT EKICI LEYLA AQIK 《Botanical journal of the Linnean Society. Linnean Society of London》2001,136(1):131-135
A new species Astragalus yilmazii Aytac & M. Ekici sp. nov. (Leguminosae) is described and illustrated from South Anatolia, Turkey. Diagnostic, morphological and molecular data are discussed for the new taxon. In addition its pollen structure is examined. 相似文献
15.
In this paper one new species of the genus Astragalus L. (Papilionaceae) is des-cribed from Nei Monggol, China. It is A. daqingshanicus Z. G. Jiang et Z. T. Yin. 相似文献
16.
HASAN AKAN MEHMET FIRAT MURAT EKICI 《Botanical journal of the Linnean Society. Linnean Society of London》2008,156(3):439-444
Astragalus bahcesarayensis H. Akan, M. Fırat & M. Ekici (Leguminosae-Papilionoideae) from Turkey is described and illustrated. It is compared with A. dipsaceus Bunge and A. panduratus Bunge. The geographical distributions of the new species and related species are mapped. © 2008 The Linnean Society of London, Botanical Journal of the Linnean Society , 2008, 156 , 439–444. 相似文献
17.
Liu Yu-Hung 《植物分类学报:英文版》1984,22(2):125-127
The karyotypes of five species in Astragalus (A. dahuricus DC., A. mongolicus
Bunge., A. adsurgens Pall., A. melilotoides Pell., A. huangheensis H. C. Fu., Y. H. Liu)
were studied. Among them, the karyotypes of A. dahuricus and A. melilotoides are reported for the first time. While A. melilotoides is tetraploid (2n=4X=32), all the others
are found to be diploid (2n= 2X = 16). Based on the comparison of karyotypes, the evolu-tionary order of these 5 species is discussed. 相似文献
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19.
Selenium Absorption by Excised Astragalus Roots 总被引:5,自引:2,他引:3
Absorption of selenate and selenite by excised roots of Astragalus Crotalariae, a selenium accumulator, and of A. lentiginosus, a non-accumulator, was favored by CaCl(2) and a pH of 4.0. The uptake of selenate and possibly selenite, is metabolically linked. Roots of a number of Astragalus species were examined, and in all cases selenate entered the roots much faster than selenite. In these short-term experiments there was no relation between uptake of the 2 ions and classification of a species as selenium-accumulator or non-accumulator. 相似文献
20.
Edith Gómez-Sosa 《Brittonia》1986,38(4):427-429
Astragalus neobarnebyanus, a new Peruvian species from Lomas de Atiquipa. Dept. Arequipa, is described and illustrated; its relationships with other South American species are discussed. 相似文献