Inflated. Bladdery.
Inflorescence. The flowering part of a plant, and especially the mode of its arrangement.
Infra-. In composition, below; as infra-axillary, below the axil.
Innovation. An offshoot from the stem.
Inserted. Attached to or growing out of.
Inter- or intra-. In composition, between.
Interfoliaceous. Between the leaves of a pair as the stipules of many Rubiaceæ.
Internode. The portion of a stem between two nodes.
Intramarginal. Within and near the margin.