Spellenberg, Richard; Rodriguez T., Sergio
June 1992
Acta Botanica Mexicana;jun1992, Issue 18, p17
Academic Journal
Chromosome numbers are reported for 18 taxa of Astragalus (Fabaceae) from northern Mexico and the southwestern United States. Twelve are reported for the first time and are as follows: COUNTS FROM BUDS: (n = 11) A. cyaneus, A. eremiticus, A. insularis var. harwoodii, A. proximus; (n = 14) A. hartwegii; (n = 15) A. goldmanii, A. zacatecanus; COUNTS FROM SEEDS: (2n = 22) A. cottamii, A. holmgreniorum, A. humillimus, A. wittmanii; (2n = 28) A. vaccarum. Six confirm earlier reports and are: COUNTS FROM BUDS: (n = 11) A. cobrensis var. maguirei, A. fucatus, A. lentiginosus var. variabilis, A. longissimus, A. mollissimus var. ?; (n = 15) A. diphacus. Second and third records for the species, and a new record for Durango, are reported for A. zacatecanus, a species formerly known only from the type collection. An emendation of the description is made based on the morphology of the new collections. A brief discussion regarding the significance of the chromosome numbers is presented, noting that higher chromosome numbers are characteristic for certain Mexican groups of Astragalus.


Related Articles

  • Astragalus argentophyllus (Fabaceae), a new species from south Anatolia, Turkey. Taeb, Fatemeh; Uzunhisarcikli, M. Erkan // Annales Botanici Fennici;Aug2012, Vol. 49 Issue 3, p259 

    Astragalus argentophyllus Taeb & Uzunh. (Fabaceae) is described and illustrated as a new species from south Anatolia, Turkey. It is placed in Astragalus sect. Malacothrix, and is similar to A. pseudotauricola, but differs by several characters in the leaves, lowers and legumes.

  • Analysis and Systematic Relationships in the Egyptian Astragalus L. (Fabaceae). Badr, Abdelfattah; Sharawy, Sherif M. // International Journal of Botany;2007, Vol. 3 Issue 2, p147 

    In this study the karyotype criteria of 35 taxa representing 24 species of Egyptian Astragalus have been analyzed and their impact on the systematic delimitation of the studied species is discussed. Chromosome numbers, based on x = 8 have been found in the majority of Astragalus species in...

  • Analysis genetic diversity of Astragalus gossypinus population in Isfahan province. Dehdashtian, Zahra; Wahabi, Mohammad Reza; fazilati, Mohammad; Ghaedi, Kamran; Salamian, Ahmad // Genetics in the 3rd Millenium;2011, Vol. 9 Issue 3, Special section p1 

    Iran is the original source and one of the important places for diversity of Astragalus species. Astragalus gossypinus species, which is the producer of tragacanth, belongs to papilionaceae family, mostly is spread in Asia. Alborz and Zagros heights are the most important inhabits of the...

  • A new species of Astragalus (Fabaceae) from Turkey. DİNÇ, Muhittin; AYTAÇ, Zeki; DOĞU, Süleyman // Turkish Journal of Botany;Sep2013, Vol. 37 Issue 5, p841 

    Astragalus silifkeense Dinç, Aytaç & Doğu, sp. nov. (Fabaceae, sect. Astragalus Bunge) is described as a new species from Silifke (Mersin Province), in southern Anatolia, Turkey. The new species is closely related to A. columnaris Boiss., endemic to Denizli in western Anatolia, and A....

  • Range extension of Alysicarpus naikianus Pokle (Fabaceae) in western India. Chavan, S. Y.; Sardesai, M. M. // Journal of Threatened Taxa;May2012, Vol. 4 Issue 5, p2590 

    The article focuses on the Alysicarpus naikianus Pokle or Fabaceae in western India. It discusses the origin and the growth of Alysicarpus naikianus Pokle population. It examines the specimens of the Alysicarpus naikianus Pokle. It also states that its flowering and fruiting fall every...

  • Taxonomy of Astragalus robbinsii var. fernaldii (Fabaceae): molecular and morphological analyses support transfer to Astragalus eucosmus. Sokoloff, Paul C.; Gillespie, Lynn J. // Botany;Jan2012, Vol. 90 Issue 1, p11 

    Astragalus robbinsii var. fernaldii, Fernald's milkvetch, is a taxon of conservation concern currently due for reassessment of its provincial and federal conservation status. Restricted to a narrow region spanning Newfoundland and Labrador and Quebec, its taxonomic position with respect to two...

  • Functional centromeres in Astragalus sinicus include a compact centromere-specific histone H3 and a 20-bp tandem repeat. Tek, Ahmet; Kashihara, Kazunari; Murata, Minoru; Nagaki, Kiyotaka // Chromosome Research;Nov2011, Vol. 19 Issue 8, p969 

    The centromere plays an essential role for proper chromosome segregation during cell division and usually harbors long arrays of tandem repeated satellite DNA sequences. Although this function is conserved among eukaryotes, the sequences of centromeric DNA repeats are variable. Most of our...

  • Phytochemical and Biological Studies of Plants from the Genus Oxytropis. X. Li, Mao; Lan, Zhi H.; Wei, Li L.; Zhang, Wen J.; Zhang, Ru X.; Jia, Zheng P. // Records of Natural Products;2012, Vol. 6 Issue 1, p1 

    Oxytropis is an important genus of the family Leguminosae and subfamily Papillionoideae, also known as "Locoweed". About 350 species distribute in many zones of the world. There are about 150 species found in China, and more than 80 species mainly distributed in the northwest and northeast...

  • Astragalus yukselii (Leguminosae), a new species from Turkey. ERKUL, Seher KARAMAN; AYTAÇ, Zeki // Turkish Journal of Botany;Sep2013, Vol. 37 Issue 5, p836 

    Astragalus yukselii Karaman & Aytaç (Leguminosae) is described as a new species and illustrated. The species is distributed near the town of Hadim in Konya Province (South Anatolia). Diagnostic morphological characters useful in discriminating the new species from its close relatives, A....


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics