Stamina. Filamenta quatuor, filiformia, fauci tubi inserta, quorum duo superiora longiora, fertilia; duo breviora sterilia. Antheræ loculis oblongis, duæ superiores dependentes; duæ inferiores erectæ, sagittatæ, squamiformes.
Pistillum. Germen tetragonum. Stylus filiformis, parum curvatus, longitudine tubi. Stigma bifidum, reflexum.
Pericarpium nullum. Calyx in fundo semina continens.
Semina quatuor, ovalia.
Empalement. Cup one-leaf, nearly cylindrical, upright, remaining, five-toothed, equal; supported by two leaflets.
Blossom one petal; petal tubular, rather longer than the cup; border spreading, five-divided, nearly equal; the two upper segments notched at the end.
Chives. Four threads, thread-shaped, inserted into the mouth of the tube, of which the two upper ones are longer, and fertile; two shorter, and sterile. Tips with oblong cells, the two upper ones hang down; the two lower are upright, arrow-shaped, and like thin scales.
Pointal. Seed-bud four-sided. Shaft thread-shaped, a little curved, the length of the tube. Summit two-cleft, reflexed.
Seed-vessel none. Cup containing the seeds at the bottom.
Seeds four, oval.