| The inflorescence consists of solitary, binate, digitate, or panicled racemes. |
| Female inflorescences are terminal, solitary or in spikes, racemes or capitula, short, bracteate, with crowded flowers, often pendulous in fruit. |
| In 1794, Moench named A. tuberosa and described it as having tuberous roots, unevenly pinnate leaflets, and purple flowers in lateral racemes. |
| The genus has some species with single flowers, but most have racemes, corymbs or subumbels. |
| In summer, the tall flower stems bear racemes of up to 20 huge, strongly perfumed, white, trumpet-shaped flowers with glossy green leaves. |
| It has pinnate leaves and racemes of lilac pink flowers, which are slightly fragrant. |
