The Origin, Expansion, and Demise of Plant Species

}A} source of lively discussion and debate among groups interested in plant evolution ... will serve as a stimulus to research over the years ahead. ... I strongly recommend }it} to all evolutionary biologists as valuable reading.--Hereditybr(A) source of lively discussion and debate among groups interested in plant evolution ... will serve as a stimulus to research over the years ahead. ... I strongly recommend (it) to all evolutionary biologists as valuable reading.--Hereditybrbr(A) source of lively discussion and debate among groups interested in plant evolution ... will serve as a stimulus to research over the years ahead. ... I strongly recommend (it) to all evolutionary biologists as valuable reading.--Hereditybrbr(A) source of lively discussion and debate among groups interested in plant evolution ... will serve as a stimulus to research over the years ahead. ... I strongly recommend (it) to all evolutionary biologists as valuable reading.--Hereditybr (A) source of lively discussion and debate among groups interested in plant evolution ... will serve as a stimulus to research over the years ahead. ... I strongly recommend (it) to all evolutionary biologists as valuable reading.--HereditybrCombining insights from observation, experimentation, and theory, The Origin, Expansion, and Demise of Plant Species offers a broad overview of species as dynamic entities that arise, have unique evolutionary histories, and ultimately go extinct. It begins with a review of species concepts and the exposition of a new concept; it then addresses plant speciation, the expansion of species from their narrow centers of origin, intraspecific differentiation, and contact zones between differentiated population systems. Special attention is given to the breakdown of cohesion among populations by reproductive and spatial barriers. Also, the ecological and genetic properties of small populations and fragmented population systems are discussed with a focus on th