Description
Contents
Editorial George Thomson
A survey of cacti richness in a biodiversity hotspot of Western Argentina
Alejandro Saint Esteven, Mariana Benedictto, Franco A. Garolla, Julián Padró and Ignacio M. Soto
Dendrocereus Britton & Rose – one species or two?
Nigel P. Taylor, Paul Hoxey and Andrew Gdaniec
Taxonomic status of two controversial species of Opuntia (Cactaceae) from Mexico based on morphological and molecular data
César Ramiro Martinez-González and José de Jesús Morales-Sandoval
The ecological relationship between sap beetles and Pilosocereus Byles & Rowley (Cactaceae) in Northeastern Brazil
Marcelo Oliveira Teles de Menezes and Vinicius Gomes Sampaio
A new species of Cumulopuntia (Cactaceae) from north-western Bolivia
Paul Hoxey and Martin Lowry
Notes on the identity of Echinocactus conglomeratus – a name of uncertain application from northern Chile
Paul Hoxey
Notes on cultivated Pereskia quisqueyana and related species (Cactaceae)
Nigel P Taylor
Notes on Pseudorhipsalis amazonica (Cactaceae-Hylocereeae) from eastern Amazônia, Brazil
Daniela Zappi, Rafael Barbosa-Silva and Nigel Taylor
Population Structure and Phenology of Discocactus zehntneri Britton & Rose subsp. petr-halfarii (Zachar) M.R. Santos & M.C. Machado (Cactaceae), a Critically Endangered Brazilian Cactus Subspecies
Joana Paula Bispo Nascimento and Marcos Vinicius Meiado
Bulbine audreyae N.R. Crouch & Gideon F. Sm. (Asphodelaceae subfam. Asphodeloideae), a new cremnophytic species with grass tuft-like rosettes from the Outeniqua range in South Africa
Neil R. Crouch and Gideon F. Smith
Cotyledon nielsii (Crassulaceae), a new cremnophyte from KwaZulu-Natal, South Africa
Neil R. Crouch, David G.A. Styles and Michele Walters
Portulacuria afra; Variability and distribution
Ernst van Jaarsveld and Anso Le Roux
Crassula floribunda (Friedrich ex Toelken) N.R. Crouch, Gideon F. Sm. & D. Styles (Crassulaceae), a new status for a species endemic to central KwaZulu-Natal province, South Africa
Neil B. Crouch, Gideon F. Smith and David G.A. Styles
Reinstatement of Kalanchoe decumbens Compton (Crassulaceae subfam. Kalanchooideae), an endemic species from eastern southern Africa
Gideon F. Smith
Expanding the known geographical distribution range of Kalanchoe waterbergensis (Crassulaceae subfamily Kalanchooideae) in northern South Africa
Gideon F. Smith. Estrela Figueiredo and Neil R. Crouch
Reinstatement of Kalanchoe (subg. Bryophyllum] sect. Alatae (Crassulaceae subfam. Kalanchooideae) for K. porphyrocalyx and K. uniflora, two Madagascan endemics
Gideon F. Smith
Taxonomic and nomenclatural notes on Kalanchoe hauseri Werderm. (Crassulaceae subfam. Kalanchooideae) from Angola, with notes on Friedrich Welwitsch’s collecting activities in the country
Gideon F Smith and Estrela Figueiredo
The identity of Kalanchoe lubangensis R. Fern. (Crassulaceae subfam. Kalanchooideae), a little-known species endemic to southwestern Angola, with an extension of its distribution range
Gideon F Smith, Estrela Figueiredo and Andrew Hankey
The taxonomy and nomenclature of Kalanchoe streptantha Baker (Crassulaceae subfamily Kalanchooideae)
Gideon F. Smith and Estrela Figueiredo
Typification of the name Cotyledon clavifolia Haw., basionym of Adromischus cristatus (Haw.) Lem. var. clavifolius (Haw.) Toelken (Crassulaceae subfam. Kalanchooideae), with a range extension
Gideon F Smith and Neil R. Crouch
The floristics and phytogeography of Kalanchoe Adans. (Crassulaceae subfam. Kalanchooideae) in the Waterberg Biosphere Reserve, northern South Africa
Gideon F. Smith and Estrela Figueiredo
Additional species of Agave (Agavoideae /Agavaceae, Asparagaceae s. 1.) introduced and naturalising in Tunisia and North Africa
Ridha El Mokni and Filip Verloove
Crassula sandrae, a new species from the southern Cape, South Africa
Niels H.G. Jacobsen
The identity of Cacalia cuneifolia L.
Julian M. H. Shaw
Crassula sarcocaulis Eckl. & Zeyh. – variation and clones in cultivation.
Julian M. H. Shaw
Aloe arborescens Mill. ‘Estelle Potgieter’ (Asphodelaceae subfam. Alooideae), a new cultivar in a variable species, with notes on aloes at the South African National Biodiversity Institute, Pretoria
Gideon F. Smith, Ronell R. Klopper and Neil R. Crouch
Notes on genuine Agave vivipara (Agavaceae), a poorly known Caribbean species, recently introduced in the Canary Islands (Spain)
Filip Verloove and Marcos Salas Pascual
Aloe vera and the identity of the plant carvings in Rosslyn Chapel, Scotland.
George Thomson
Gordon Douglas Rowley 1921-2019: an appreciation
Jonathan Y. Clark
Softback
Total Number of Pages 273
ISBN 978-0-902099-28-9
