No. 18 (1992)

Research article

• The Hygrophoraceae family in Mexico. II

  Rosa E. Santillan, Ricardo Valenzuela

  1-10

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  • Abstract 2080
    
  • PDF (Español) 411
    

• A new species of Dandya (Alliaceae) from the Balsas River Basin, Mexico

  Ana Rosa Lopez-Ferrari, Adolfo Espejo Serna

  11-15

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  • Abstract 2304
    
  • PDF (Español) 432
    

• Chromosome numbers in some species of Astragalus (Fabaceae) and an amendment to the description of A. zacatecanus (Rydb.) Barneby

  Richard Spellenberg, Sergio Rodriguez T.

  17-20

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  • Abstract 2176
    
  • PDF (Español) 334
    

• Pedilanthus connatus (Euphorbiaceae), striking new species from Jalisco

  Robert L. Dressler, Charles M. Sacamano

  21-24

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  • Abstract 2215
    
  • PDF (Español) 388
    

• A new species of Beaucarnea (Nolinaceae)

  Luis Hernandez Sandoval

  25-29

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  • Abstract 1508
    
  • PDF (Español) 525
    

• Contribution to the knowledge of the lichens of the Los Azufres Geothermal Field, Michoacán, Mexico

  Marlene Gomez-Peralta

  31-53

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  • Abstract 3229
    
  • PDF (Español) 678
    

• Ficus seedlings, subgenus Pharmacosycea (Moraceae), in Veracruz, Mexico

  Guillermo Ibarra-Manriquez

  55-69

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  • Abstract 2868
    
  • PDF (Español) 515
    

• Neotyping of three species of the genus Bletia (Orchidaceae)

  Victoria Sosa

  71-79

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  • Abstract 3643
    
  • PDF (Español) 512