SIDERITIS, IRONWORT, in botany: A genus of plants belonging to the class of didynamia, and to the order of gymnospermiæ; and in the natural system ranging under the 4th order, Vericillata. The stamens are within the tube of the corolla. There are two stigmas, one of which is cylindrical and concave; the other, which is lower, is membranous, shorter, and sheathing the other. The species are 13. 1. The Canariensis, or Canary ironwort, which is a native of Madeira and the Canary islands; 2. The Candicans, which is also a native of Madeira; 3. The Syriaca, a native of the Levant; 4. The Perfoliata, a native of the Levant; 5. The Montana, a native of Italy and Austria; 6. The Elegans; 7. The Romana, a native of Italy; 8. The Incana, a
native of Spain; 9. The Hyssopifolia, a native of Italy and the Pyrenees; 10. The Scordoides, a native of the south of France; 11. The Hirsuta, which is indigenous in the south of Europe; 12. The Ciliata; 13. The Lanata.