This area, landscaped in the classical style of historic botanical gardens, pays tribute to four important figures in Spanish and international botany. Four lawn beds, arranged around a wooden pergola in the form of a vaulted structure and bordered by hedges of various shrub species (box, firethorn, yew, cotoneaster, among others), contain plant species that honour different personalities connected with botany.

-Blanca Catalán de Ocón y Gayolá (1860–1904). Born in Zaragoza, Blanca Catalán is regarded as the first female botanist in Spain. She compiled a herbarium of plants from the Albarracín area between 1878 and 1888 and corresponded with other prominent botanists of the time, such as Wilkomm, Loscos and Pau, who openly acknowledged her as Spain’s first botanist. Her plant collections enabled other scientists to describe new species of Iberian flora, such as Klasea nudicaulis (formerly Serratula albarracinensis), among others. This bed features Iberian forest species such as holly (Ilex aquifolium), small-leaved lime (Tilia cordata), large-leaved lime (Tilia platyphyllos), silver birch (Betula pendula) and three species of elm (Ulmus minor, U. glabra and U. laevis).

-Casimiro Gómez de Ortega (1741–1818). Born in Añover de Tajo (Toledo), he was the first professor of the Royal Botanic Garden of Madrid. He botanised the flora of Sierra Morena, Miraflores, the Central System and Aranjuez, and significantly enriched the collections of the Royal Botanic Garden with European, Iberian and American plants. He also organised several botanical expeditions to the Philippines and the Americas (the Botanical Expedition to the Viceroyalty of Peru, 1777–1788, and the Royal Botanical Expedition to New Spain, 1787–1803). Together with Antonio Paláu, he promoted the introduction of the Linnaean system of scientific nomenclature in Spain. His section includes exotic plants such as the monkey puzzle tree (Araucaria araucana) and New Zealand flax (Phormium tenax).

-Lynn Margulis (1938–2011). A distinguished American biologist whose research supported the theory of endosymbiosis, proposed in the late nineteenth century. According to this theory, the first eukaryotic cell originated through the assimilation of bacteria with different metabolic capabilities, such as respiration (mitochondria) and photosynthesis (chloroplasts). These organelles, although highly transformed, retain their own genomes and replicate autonomously within the eukaryotic cell. Respiration and photosynthesis are two revolutionary processes in the evolution of life, enabling the diversification of biological kingdoms. In the case of photosynthesis, the chloroplasts of algae and plants, cyanobacteria and other bacteria are capable of converting inorganic matter into organic matter using solar energy. To honour her legacy, a diverse selection of plant species has been chosen, including strawberry trees (Arbutus unedo), black poplar (Populus nigra) and chinaberry (Melia azedarach), among others.

-Francisco Hernández de Toledo (c. 1514–1587). Born in La Puebla de Montalbán (Toledo), he was a physician, ornithologist and botanist who produced the first botanical-pharmacological work of the New World, in which he described, among many other things, maize and tobacco. Philip II appointed him director of a scientific expedition to the Americas, focusing particularly on the territory of New Spain: the Francisco Hernández Expedition to New Spain. During this mission, he described numerous plants and animals, many of them using their Nahuatl names. His bed commemorates him with American plant species such as catalpa (Catalpa bignonioides), tulip tree (Liriodendron tulipifera) and several varieties of dahlia (Dahlia), among others.