INTKolMCTKtN. 9 



very wide Icavi's the lower piiiiia- on oin' sido niay bo cut away to prevent 

 the too great niassiny of foliage when the leaf is doiiijled on itself to make 

 a manageable specimen. 



(3) In tree ferns the basal portion of the petiole should always be 

 secured, if possible, attached to the lower pinnules. Wiiere possible the 

 top of tlie eaudex should also be taken. Notes on the character of the leaf 

 scars sliould always be made. 



(4) If the specimen taken does not sliow whether the leaves are scattered 

 or ccspitose this should always bo iiu'lud('<l in the notes. 



(5) In ferns, of whatever size, invariably secure some portion of the 

 rootstock, for it nearly always possesses diagnostic characters. 



(G) In largo loaves note whether the lowermost piinuo are larger than 

 the others or are reduced in size and if tiieir lamiiue staiul in the same 

 plane as the rest of the leaf or are set obliquely. 



