(1) Species of Cylindropuntia and Opuntia cactus have a wide range of morphologies from tall, tree-like forms to procumbent forms.(2) Finally, this work represents part of a long-term research effort in which mechanical architectures are being investigated in terms of the evolution of architectures of trees, shrubs, lianas and procumbent growth forms.(3) Charnia evidently had a procumbent mode of life on a soft muddy substrate.(4) One example is procumbent rosemary, used extensively as a ground cover and sheared several times a year.
