Similarities and differences among eight upland rain forest sites in Peruvian Amazonia were measured separately by using Melastomataceae, pteridophyte and tree species compositions and edaphic ...

Pteridophytes (ferns and lycophytes) are a widespread group of plants of around 13,000 species found in almost every habitat in the world. We selected 1,500 species of pteridophytes at random from a ...

We documented the floristic composition of pteridophytes (ferns and fern allies) and Melastomataceae in Yasuní National Park, Amazonian Ecuador. Our main questions were: (1) Are the density of ...

PHYSIOLOGICAL and experimental observations have hitherto played virtually no part in helping to elucidate problems connected with the organization of the plant body in Pteridophytes. The approach ...

First ed. published in 1938 under title: Vergleichende Anatomie der Vegetationsorgane der Pteridophyten.