The Palm-Tree of Life: Biology, Utilization, and Conservation. Adv Econ Bot (6) books subtribe Nassauviinae) has two centers

subtribe Nassauviinae) has two centers of diversity

A study of these extant members and the cycad fossil record dating back to over 250 million years ago has revealed that cycads have remained relatively unchanged throughout their long history

The neotropical species of the genus are placed in four sections

/ It remains uncertain whether Phaeocollybia as a whole or partially belongs to the soil-inhabiting saprophytes or to the parasitic fungi

This volume reports the results of studies to ascertain whether there are discontinuities meriting the recognition of separate taxa in Thlaspi in North America

The Palm-Tree of Life: Biology, Utilization, and Conservation. Adv Econ Bot (6) books subtribe Nassauviinae) has two centersPalms play important and often multiple roles in the economies of many tropical and subtropical countries. This collection of twenty one papers is divided into four sections: a taxonomic overview of palms; the reproductive biology, ecology, and physiology of certain economically useful palms; the utilization of palms; and the conservation of palms. Ethnobotanical and domestication studies of palms are particularly well represented.