Digital programs available:
Agave utahensis - The many forms and varieties of this fascinating species of Agave
Baja California - End to end
Desert Splendor… East - High deserts of Nevada
Desert Splendor… West - High deserts of California
Death Valley - A compilation of several excursions into Death Valley National Park
Echinocereus of the USA - A photographic journey of the beauty of this spectacular genus of cacti
Echinocereus of Mexico - A photographic journey of the beauty of this spectacular genus
* Guanajuato - Covering a peregrination there with the CSSA (Geohintonia mexicana, etc.)
Red Rock Canyon NV - HD photographs and video of one of Nevada’s natural wonders (Nevada)
Red Rock Canyon CA - HD photographs and video of one of Nevada’s natural wonders (California)
* Sierra del Viejo - A trek to Sonora, Mexico… decades back.
Superb Succulents - Images from the column, the books, and the history
Valley of Fire - HD photographs and video of Nevada’s oldest and largest state park.
Yellowstone 1983 - An adventure through the world’s largest thermal wonder; inc. Yosemite
Yellowstone 1995 - An adventure through the world’s largest thermal wonder; inc. Yosemite
*Aloes of Southern Africa- A compilation of known aloes occurring in southern Africa
Encephalartos whitelockii - A detailed assessment of the habitat and flora of this taxon
*Kruger National Park - A journey from the southern to the northern gate of SA’s largest NP
Lake Natron - A soda lake (and surrounding areas) on the border of Kenya/Tanzania, a home of migrating flamingos
*Namaqualand & Namibia - Some of the most beautiful scenery on the African continent
Ngorongoro Crater - An isolated crater on Tanzania’s Great Rift; flora & fauna in abundance
The Serengeti - One of the world’s most pristine assemblages of unusual flora and fauna
*Southern Africa - More than 7000 miles through five countries in Southern Africa
Tarangire NP & Lake Manyara NP - Two of Tanzania’s national parks, and a wealth of flora & fauna
Victoria Falls - The widest waterfall in the world at the junction of several African countries
Uganda - North - An adventure into the remote Karamoja region with a look at Kenya & Sudan
Uganda - South - Also Lakes Victoria, George, and Edward, QE NP, and the Kazinga Channel
*converted from slide presentations
Duke has been involved with several cactus & succulent clubs and is a life member of three. He became a Director for the Cactus & Succulent Society of America (CSSA) in 1990, served as the CSSA's Show Chairman for more than a decade, and as Convention Chairman for six conventions. He served as Vice President and then President for a total of almost ten years, and as Editor of the Cactus & Succulent Journal for just over a year. He has been the author of the long-running CSJ column, Superb Succulents, since its inception. He enjoys flora and fauna, traveling, photography, and sharing these experiences with others of similar interests.
In addition to growing plants from seed and propagating them vegetively, writing and publishing books, and participating in plant societies, shows, and sales, Duke also offers digital presentations for club meetings and other gatherings. See the list below and contact Duke for available dates.