Complex sentence: The inflorescence forms an umbel of 10--20 pendant bell-shaped flowers with six tepals that are yellowish to green, on a stem of about 2 1/2' feet (50--80 cm) in height.
Split into simpler sentences: The inflorescence forms an umbel of 10--20 pendant bell-shaped flowers with six tepals that are yellowish to green. Stem of about 2 1/2' feet (50--80 cm) in height.