order psilotales

English Thesaurus

1. lower vascular plants having dichotomously branched sporophyte divided into aerial shoot and rhizome and lacking true roots (noun.plant)

hypernym	:	plant order,
definition	:	the order of plants (noun.plant)

member holonym	:	family psilotaceae, psilotaceae,
definition	:	small family of lower ferns having nearly naked stems and minute scalelike leaves (noun.plant)

member meronym	:	class psilopsida, class psilotatae, psilopsida, psilotatae,
definition	:	whisk ferns; comprising the family Psilotaceae or Psilotatae: vascular plants with no roots, partial if any leaf differentiation, and rudimentary spore sacs (noun.plant)