Nolaneae-Solanaceae
Of the many genera purposed within the Nolana clade, our preliminary data support the recognition of two subgenera, Nolana and Alona Lindl. In addition, our studies support the recognition of 80 species: 39 species from Peru, 40 species from Chile, at least 2 species are distributed in both Peru and Chile, and one species in the Galapagos Islands. Since 1983, field studies have been conducted throughout the range of the Nolana clade, and we have encountered several collections that may warrant formal taxonomic recognition from both Chile and Peru. Our studies point to northern Chile as the origin for the Nolana clade and examples of extensive secondary sympatry are recorded from that area. Evolution of diversity within this group must be viewed in the context of the climatic and geological changes within the deserts of coastal South America, including glacial cycles and sea-level changes, continental uplift, and global climate change, and the historical development of ENSO ("El Niņo") weather patterns.
Three sections with information are currently available, and include a selection of species with images, herbarium sheets for selected species, and type photographs taken by J.F. Macbride in Europe before 1940.
Nolana Systematics
Examples of Nolana Herbarium Sheets 
Examples of Macbride's European Type Photographs

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