- Iberis (Phatak)
- Iberis amara (Clarke)
- Ichthyolum (Tarkas)
- Ictodes foetida (Clarke)
- Ignatia (Kent)
- Ignatia (Allen)
- Ignatia (Bailey)
- Ignatia (Boericke)
- Ignatia (Boger)
- Ignatia (Charette)
- Ignatia (Chatterjee)
- Ignatia (Clarke)
- Ignatia (Coulter)
- Ignatia (Deriker)
- Ignatia (Gibson)
- Ignatia (Grandgeorge)
- Ignatia (Hahnemann)
- Ignatia (Nash)
- Ignatia (Phatak)
- Ignatia (Salunke)
- Ignatia (Sankaran)
- Ignatia (Vijayakar)
- Ignatia (Vithoulkas)
- Ignatia amara (Farrington)
- Ignatia amara (Borland)
- Ignatia amara (Vitko)
- Ignatia amara (William H Burt)
- Iguana (Sankaran)
- Imperatoria ostruthium (Clarke)
- Inachis Io (Elena Yavnilovich)
- Indigo (Boericke)
- Indigo (Clarke)
- Indigo (Deriker)
- Indigo (Laura Coramai)
- Indigo (Phatak)
- Indium (Clarke)
- Indium (Sankaran)
- Indium (Scholten)
- Indium metallicum (Loukas)
- Influenzinum (Clarke)
- Insulinum (Tarkas)
- Inula (Boericke)
- Inula (Clarke)
- Iodine (Kent)
- Iodinum (William H Burt)
- Iodoformum (Phatak)
- Iodum (Allen)
- Iodum (Boericke)
- Iodum (Borland)
- Iodum (Charette)
- Iodum (Clarke)
- Iodum (Deriker)
- Iodum (Gibson)
- Iodum (Grandgeorge)
- Iodum (Nash)
- Iodum (Phatak)
- Iodum (Sankaran)
- Iodum (Tarkas)
- Iodum purum (Vitko)
- Ipeca (Grandgeorge)
- Ipecacuanha (Charette)
- Ipecacuanha (Clarke)
- Ipecacuanha (Deriker)
- Ipecacuanha (Farrington)
- Ipecacuanha (Gibson)
- Ipecacuanha (Hahnemann)
- Ipecacuanha (Kent)
- Ipecacuanha (Nash)
- Ipecacuanha (Phatak)
- Ipecacuanha (Vitko)
- Ipecacuanha (William H Burt)
- Ipecacuanha (Аllen)
- Iridium (Boericke)
- Iridium (Clarke)
- Iridium (Scholten)
- Iris (Deriker)
- Iris florentina (Clarke)
- Iris foetidissima (Clarke)
- Iris tenax (Clarke)
- Iris versicolor (Charette)
- Iris versicolor (Clarke)
- Iris versicolor (Phatak)
- Iris versicolor (Vitko)
- Iris versicolor (William H Burt)
- Itu (Clarke)
- lodum (Scholten)