While some species are single-stemmed, others form multi-stemmed (caespitose) clumps.
 Coupled with variation in stem size, this produces a diversity of growth forms in the genus—solitary (single-stemmed) palms that grow into the subcanopy of the forest, solitary or caespitose palms that grow in the forest understorey and acaulescent palms which lack an aboveground stem.

Two species are characterised by an acaulescent growth habit—A. acaulis and A. spicata.
 Two other species—A. ulei and A. weberbaueri—occur in both acaulescent populations and those which produce above-ground stems.
 Several species are single-stemmed understorey palms, an unusual growth form.
 Aiphanes grandis and A. minima are single-stemmed palms which grow to be more than 10 metres (33 ft) tall, while the remainder are multi-stemmed understorey species.
Multi-stemmed palms range from plants with a single main stem and a few basal suckers to caespitose clumps of 20 densely packed stems.
 A variety of growth forms can exist within a single species and this appears to be influenced by habitat and environmental conditions.
While some species are single-stemmed, others form multi-stemmed (caespitose) clumps.  Coupled with variation in stem size, this produces a diversity of growth forms in the genus—solitary (single-stemmed) palms that grow into the subcanopy of the forest, solitary or caespitose palms that grow in the forest understorey and acaulescent palms which lack an aboveground stem.
Two species are characterised by an acaulescent growth habit—A. acaulis and A. spicata.  Two other species—A. ulei and A. weberbaueri—occur in both acaulescent populations and those which produce above-ground stems.  Several species are single-stemmed understorey palms, an unusual growth form.  Aiphanes grandis and A. minima are single-stemmed palms which grow to be more than 10 metres (33 ft) tall, while the remainder are multi-stemmed understorey species. Multi-stemmed palms range from plants with a single main stem and a few basal suckers to caespitose clumps of 20 densely packed stems.  A variety of growth forms can exist within a single species and this appears to be influenced by habitat and environmental conditions.
Aiphanes