Download CITES Cactaceae Checklist by David Hunt PDF

By David Hunt

Ready through David Hunt and an international community of specialist, this is often an important reference for scientists, nurserymen and creditors, and the traditional device of CITES and imposing enterprises controlling the foreign alternate in cacti.

Intended as a reference for checking presently approved names and the distribution of crops, it truly is divided into 3 parts:

1. an alphabetical directory of all permitted names in present usage
2. reference information and alphabetical directory prepared in geographical distribution of taxa
3. a space record by way of country

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Die tweede en volgende soort wat beskryf is, het Berger in 1908 Mesembryanthemum pseudotruncatellum genoem. Hierdie soort is in Damaraland, Groot Namakwaland, ontdek, in die omge wing soos ons nou weet, van Windhoek. In 1912 het Mnr. Leslie ’n plant naby Vereeniging ontdek wat deur N. E. Brown na die ontdekker daarvan, Mesembryanthemum Lesliei, genoem is. Hierdie vroeë ontdekkings bewys dat die genus ’n baie wye verspreiding het—trouens Windhoek en Vereeniging lê baie ver van mekaar, en albei is ongeveer 500 myl van Prieska af.

Brown het in 1922 hierdie plante Li‑ thops genoem, omdat hulle, soos hy dit self gestel het, in vorm en in kleur in ooreenstemming is met die gesteentes en ronde klippies waartussen hulle groei. Die genus behoort tot die Aizoaceae, ’n familie wat in die droeëre streke van Suid‑Af rika en Suidwes‑Afrika goed verteenwoordig word deur ’n groot verskeidenheid van plante. Die gewasse wat in Suid‑Afrika algemeen bekend is as „Vygies”, was vroeër almal saamgevat in een enkele genus, nl. die genus Mesembryanthemum.

Schwantesii byvoorbeeld is hulle blonagtig‑groen. Denkbaar het die topoppervlakte van die blaar in twee definitiewe en verskillende rigtings ontwikkel. Die vraag is nou: wat was die oorspronklike toestand. Dis waarskynlik dat die ondeurskynende venster soos dit by L. Ru‑ schiorum en L. turbiniformis aangetref word ’n primitiewe toestand daarstel, en dat die ontwikkeling van die miniatuur‑venster van later datum is. Op die doeltreffendheid van laasgenoemde het ons alreeds gewys. Met hulle ontwikkeling het die deurskynende vlekkies en kolletjies blyk­b aar die ondeurskynende oppervlakte op sekere bepaalde punte deurdring.

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