In Italy, two herbals were beginning to include botanical descriptions. The medicinal component of herbals has developed in several ways. Early herbals and pharmacopoeia of many cultures have included the depiction of plants. Women tended all crops except tobacco and herbals, which were planted by shamans only. As plants became useful for herbals and curatives, their economic value increased. Early herbals had simple, not very realistic, woodcut illustrations of plants. The Benedictine monasteries were known for their in-depth knowledge of herbals. Some ancient cultures wrote about plants and their medical uses in books called "herbals". Sellers of such fake herbals typically respond by just changing the names of their products. Early handwritten herbals were often illustrated with paintings and drawings. Lapidaries are often found in conjunction with herbals, and as part of larger encyclopedic works. Other sources for embroidery designs were the popular herbals and emblem books. The tree frequently figured in the 16th and 17th century herbals. The Algonquians used over twenty herbals in smoking their ceremonial pipes. For medical use of herbals to be effective, a manual was developed.