Canna~Fangled Abstracts Intrusive growth of primary and secondary phloem fibres in hemp stem determines fibre bundle formation and structure. 2015 May 27. pii: plv061. Snegireva A1, Chernova T1, Ageeva M1, Lev-Yadun S2, Gorshkova T3. Author information Abstract Plant…Freedom WaresMay 27, 2015