Of an estimated 300,000 species of vascular plants on the planet, 103 (including rice, wheat, beans and corn) provide humankind with over 90 % of our caloric intake; some 10,000 other plant species are also used for food and medicine.
據估計，目前地球上約有 30 萬種維管束植物，其中 103 種（如稻、小麥、豆類和玉米）提供人類超過 90 % 的熱量，另外近萬種植物則被用做食物和藥物。