A complete classification of plants is far from realization. Being well aware that plants form a dynamic, ever-changing group of organisms, no taxonomist ever expects a" complete" system of classification. Nevertheless, the possibility that a thorough, integrated system can and should eventually be produced must not be dismissed. If no more new areas were to be explored, if no more collections of plants were to be made and stored in the world's herbaria, the number of specimens already on hand would still provide taxonomists with sufficient re-search material to continue their activity along present lines for at least another 50 years. An even more dismal fact is that plant taxonomists tend to neglect the plants with which we are most intimately associated, the cultivated species.