Estudo agrícola-tecnológico de diversas variedades de Phormium tenax ForsterIn spite of the polymorphism of Phormium has long been known, no systematic attempt has been made until now to study comparatively the agricultural value and fiber quality of the varieties. This paper is concerned with preliminary results about leaf yield, fiber-content, und general growth of six varieties, of Phormium tenax Forster including a detailed fiber analysis. It is concluded that the varieties have shown strong differences in plant development and fiber qualities, suggesting that some of them would be much more suitable for the improvement of existing areas, and the establishment of new ones on a commercial basis.