Complex sentence: Representatives of this species grow as a rosette herbaceous plant that spans from 10 to 29 centimeters; the stem axis alone reaches approximately a length of 2 to 4 centimeters.
Split into simpler sentences: Representatives of this species grow as a rosette herbaceous plant that spans from 10 to 29 centimeters. The stem axis alone reaches approximately a length of 2 to 4 centimeters.