APPENDIX II 465 



notes should be made to amplify or to correct the information 

 therein to be found. 



How to collect plants is a question for individual choice. 

 If they are to be preserved for herbarium purposes they 

 should be perfect specimens, complete^ and typical. A series 

 of specimens of the plant in different stages should be 

 collected, if any extended series of observations is desired. 

 Mr. J. Britten, late of the Botanical Department, British 

 Museum (Natural History), long ago emphasised this point. 

 Certain genera require special treatment. Brambles, roses, 

 hawk-weeds, willows, grasses are examples. The barren 

 stem and panicle of a bramble are required, the flowers and 

 later fruit of roses, the radical leaves, fruit as well as flowers, 

 of hawkweeds, the early leaves and catkins (male and 

 female) of willows, and their later leaves, and the roots or 

 rhizomes or stolons of grasses. Since so much depends in 

 plant classification upon the flowers or fruit or seed, these 

 parts should be collected in good condition. 



The drying of plants is a question for careful thought. 

 Generally speaking, plants dried for the herbarium should be 

 pressed between botanical paper or newspapers. The plants 

 should be arranged in the form in which they are required 

 for mounting, large specimens being bent back. The 

 papers should be changed daily or every six hours. Delicate 

 flowers may be dried separately. Aquatic plants should be 

 floated out. A sufficient supply of paper should be placed 

 between separate plants and adequate pressure applied. A 

 temporary label should be placed with each plant. 



The method of mounting of plants is a matter for 

 individual taste. The size of paper is usually 16 x 10 

 inches or 1 7 x 11 inches. Single cartridge sheets are usually 

 employed, but some botanists prefer to use a double folded 

 sheet, the upper sheet serving as a cover. 



The plants may be fastened down with strips of trans- 

 VOL. III. 30 



