The flowers are arranged on inflorescences called cincinni (singular: ), which are also called scorpioid cymes. This is a form of a where the lateral branches arise alternately. The cincinni are subtended by a spathe, a modified leaf. The solitary spathes usually measure long, but some may be up to in length, while they are tall, but sometimes up to . The uncurved spathes typically have a , or heart-shaped, whitish base, which contrasts with its dark green veins. Their margins lack hairs, are somewhat , or rough, and are unfused, meaning they are distinct to the base. Their apices are acute to acuminate while the surfaces are glabrous, puberulent, or -, meaning with longer, shaggier hairs. The spathes are borne on peduncles, or stalks, that measure and sometimes up to long.