Botanico Xerofito was a botanical garden which they founded together. Croizat and Catalina worked for six years to establish Jardin Botanico Xerofito. Croizat died at Coro on November 30, 1982, of a heart attack. During his life, Croizat has published around 300 scientific papers and seven books, amounting to more than 15,000 printed pages. He was honoured by Venezuela with the Henri Pittier Order of Merit in Conservation, and by the government of Italy with the Order of Merit. Croizat is commemorated in the scientific name of a species of lizard, Panopa croizati. Several plant and animal species (and one genus) have been named after Croizat. Concepts Panbiogeography is a discipline based on the analysis of patterns of distribution of organisms. The method analyzes biogeographic distributions through the drawing of tracks, and derives information from the form and orientation of those tracks. A track is a line connecting collection localities or disjunct areas of a particular taxon. Several individual tracks for unrelated groups of organisms form a generalized ('standard') track, where the individual components are relict fragments of an ancestral, more widespread biota fragmented by geological and/or climatic changes. A node arises from the intersection of two or more generalized tracks In graph theory a track is equated to a minimum spanning tree connecting all localities by the shortest path. To explain disjunct distributions, Croizat proposed the existence of broadly distributed ancestors that established its range during a period of mobilism, followed by a form-making process over a broad front. Disjunctions are explained as extinctions in the previously continuous range. Orthogenesis is a term used by Croizat, in his words "... in a pure mechanistic sense", which refers to the fact that a variation in form is limited and constrained. Croizat considered organism evolution as a function of time, space and form. Of these three essential factors, space is the one with which biogeography is primarily concerned. However space necessarily interplays with time and form, therefore the three factors are as one of biogeographic concern. Put another way, when evolution is considered to be guided by developmental constraints or by phylogenetic constraints, it is orthogenetic. Although authors belonging to the dispersalist establishment have dismissed Croizat's contributions, others have considered Croizat as one of the most original thinkers of modern comparative biology, whose contributions provided the foundation of a new synthesis between earth and life sciences. Panbiogeography became established as a