Haseltonia 04

Contents

  • The subspecies of Dudleya virens (Crassulaceae) by Reid Moran
  • The correct orthography of Aloe micracantha (Aloaceae) by Gideon F. Smith and Marthina Mössmer
  • Easter cacti (Rhipsalidopsis; Cactaceae) by Eckhard Meier
  • I come not to praise Agave hartmanii (Agavaceae) by Joseph E. Laferrière
  • Chromosomes and hybrids of Echeveria II. Series Occidentales Moran (Crassulaceae) by Charles H. Uhl
  • Neotypification of Agave rhodacantha (Agavaceae) by Joseph E. Laferrière
  • Chromosomes and hybrids of Echeveria III. Series Secundae (Baker) Berger (Crassulaceae) by Charles H. Uhl
  • A reclassification of Caralluma R. Brown (Stapelieae: Asclepiadaceae)by Darrel C. H. Plowes
  • Molecular evidence for the systematic placement of Echinocereus pensilis (K. Brandegee) J. Purpus (Cactaceae) by Robert S. Wallace and Eric D. Forquer
  • Hartmanthus, a new genus in Aizoaceae by Steven Hammer
  • Two new taxa in Uncarina (Pedaliaceae; Madagascar) by J. J. Lavranos
  • Notes on the generic placement of Mesembrianthemum locale N.E.Br (Aizoaceae) by Steven Hammer
  • Aloe section Anguialoe and the problem of Aloe spicata L.f. (Aloaceae) and H. F. Glen and D. S. Hardy
  • Control of the giant cactus beetle (Moneilema gigas) and other borers, in cactus collections by Mark A. Dimmitt
  • The environmental conditions of Cactaceae in Chile by Robert Kraus
  • Agave delamateri (Agavaceae) and its role in the subsistence patterns of pre-Columbian cultures in Arizona by Wendy C. Hodgson and Liz Slauson

 

Front Cover: The symmetry of cacti is one of their most striking features; the thickening of the stem and multiplication of "ribs" with areoles often create pronounced patterns, usually spiralled. The absence of obscuring leaves emphasizes such patterns even more. Ferocactus glaucescens (DC.) Britt. & Rose is found on limestone in torrid canyons at many localities in the Mexican states of Hidalgo, Queretaro, San Luis Potosi, and Guanajuato. Its bluish epidermis affords protection against the harsh light and heat of these habitats. Usually fiercely armed, it is sometimes nearly spineless, as in the present plant, a cultivar known as 'Inermis'. Photo by J. N. Trager, Huntington Botanical Gardens.                         

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