Haseltonia 23

Invited review: Comparative analysis of load adaptation strategies in columnar cacti and hardwood trees Hannes SchwagerMorphology and anatomy support a reclassification of the African succulent taxa of Senecio s.l. (Asteraceae: Senecioneae) Danielle Cicuzza, Danielle Sombra Stäheli, Reto Nyffeler and Urs EggliNomenclatural proliferation and the superabundance of homotypic synonyms in Grusonia (Opuntioideae, Cactaceae) Rolando T. Bárcenas and Julie A. Hawkins Architectural effects on floral traits in Sedum praealtum DC. (Crassulaceae) in Mexico Angélica María Hernández-Ramírez Extending the natural distribution range of Astroloba herrei Uitewaal (Asphodelaceae: Alooideae): implications for its conservation status Steven Molteno, Gideon F. Smith and Ernst van JaarsveldGasteria koenii, a new Gasteria species from the Swartberg, Western-Cape, South Africa Ernst van Jaarsveld Bulbine dewetii, a new cliff-dwelling Bulbine species (Asphodelaceae) from the Western Cape Ernst van Jaa