| aphyllous - leafless or with inconspicuous scale leaves |
| bulb - A compact storage structure consisting of a short stem and fleshy scale leaves. |
| bulbiferous - bearing bulbs or bulbils for vegetative propagation |
| cladode - a flattened stem resembling a leaf in form and function |
| corm - A type of vertically oriented stem tuber, with a single dominant bud at its apex. Corms are usually subterranean, and in many cases replace themselves every growing season, with a new corm growing on top of the old corm, which withers away. |
| enantiostylous - with asymmetrical flowers, in which the style bends to one side. Individuals of enantiostylous plants are either right or left handed, and enantiostyly acts to discourage self pollination: a left handed plant will deposit most of its pollen on the right |
| enation - A relatively large outgrowth of photosynthetic tissue, arising from the surface of a stem or leaf. |
| hemiparasite - parasitic plant having chlorophyll and capable of providing some of its own nutrition |
| holoparasite - parasitic plant wholly dependent upon host, lacking chlorophyll |
| myrmecophyte - plants inhabited by ants and offering specialised shelters and food for them |
| prickle - A sharp pointed structure that develops as a superficial outgrowth of a leaf or stem. Prickles are usually scattered over the organ that bears them. |
| rhizome - A thickened stem bearing scale and/or foliage leaves and shoot-borne roots, and growing horizontally at or below the soil surface. |
| root tuber - A storage structure derived from fleshy root tissue. Usually subterranean. |
| runner - A thin, aboveground creeping stem, bearing reduced or scale leaves along its length and rooting to produce a plantlet at its tip. |
| spine - A sharp pointed outgrowth from the surface of a plant, derived from modified leaf tissue. Spines are lateral appendages born on stems in a set pattern, like ordinary leaves. |
| stem tuber - A storage structure consisting of swollen stem tissue, bearing roots, small scale leaves, and axillary buds that give rise to shoots. |
| thorn - A sharp pointed structure derived from a modified vegetative shoot or inflorescence. Like ordinary shoots, thorns are either terminal or arise from the axils of leaves. |
