5-8 mm in diam.; calyx turbinate, lobed less than halfway, calyx tube
2.3-3.0 mm long, puberulent inside, calyx lobes 1.7-2.7 mm long, base shallowly triangular with 2 or more pairs of arched secondary veins, multiaereolate, apices acuminate.
Ten umbels were collected at random from each plant, and floral bract and standard lengths and widths: and calyx, calyx tube, style, and ovary lengths were measured on one flower from each umbel.
Lengths of central leaflets, floral bracts, standards, calyx tubes, and styles of 4x 204882-1 were not different from those of MU-81.