Sentence:  This is a small distinct genus of robust-growing and highly ornamental plants; and, though generally considered Tree Ferns, some species have a decumbent rhizome, of which the <WSD>Barometz</WSD>, or Vegetable Lamb, is a good example. 
Meaning of the word marked with <WSD> tags:  The woolly fern, (noshow=1), whose inverted roots are thought to be the basis for the legend.