Mannahatta: A Natural History of New York City flora neotropica The present study contributes a

The present study contributes a taxonomic revision of the 29 species of Venezuelan Ruellia

is described

and "Wild Sunflower" ~Helianthus annuus~

and dichotomous keys to facilitate identification of all 29 species

each with its own flora and conservation problems

Mannahatta: A Natural History of New York City flora neotropica The present study contributes aOn September 12, 1609, Henry Hudson first set foot on the land that would become Manhattan. Today, its difficult to imagine what he saw, but for more than a decade, landscape ecologist Eric Sanderson has been working to do just that. Mannahatta: A Natural History of New York City is the astounding result of those efforts, reconstructing in words and images the wild island that millions now call home. By geographically matching an 18th century map with