Sentence:  In this case the longitudinal growth was arrested, and if we examine the regular <WSD>cabbage-head</WSD>, we find ten, fifteen, or often more leaves forming a single cycle round the stem, as in all cases of arrestation of growth — forming of a cone in the pine, for instance— the number of leaves in a cycle were increased. 
Meaning of the word marked with <WSD> tags:  Head of cabbage