Pteridophytes and Gymnosperms

The study of organismic diversity has witnessed an unprecedented upswing in the last two de­ cades. The empirical basis of botanical systematics has been broadened far beyond the realm of macromorphological traits on which systematists have based their decisions for more than 200 years. Electron microscopy and phyhemistry have become standard tools, rendering evi­ dence from micromorphology and micro molecules accessible to systematic research. The analy­ sis of truly biological phenomena, ...