Directions for Collecting and Preserving Plants. 



i. A complete specimen will represent the root, stem, leaves, flowers 

 and fruit. 



2. Collect small plants, like the Violet, entire. 



3. When the leaves of the stem and the root differ, as in some Butter- 

 cups, get both. 



4. If the staminate and the pistillate flowers are on different plants, as 

 in Thalictrum (Rue), or on different parts of the same plant, as in the Butter- 

 nut, look for both. 



5. Plants of the Orders, Cruciferae (Mustard Family), and Umbelliferae 

 (Parsley Family), with all Rushes and Sedges are classified by the fruit. 

 Grasses maybe gathered in flower. 



6. Ferns should be in fruit, and when the sterile and fertile fronds dif- 

 fer, as in Osmunda, get both. 



7. Thick roots and stems can be split in two and one-half Jonly be pre- 

 served. 



8. Arrange the plant to be dried in a folded sheet of thin, bibulous 

 paper, and do not disturb it until dry. Let thick pads of drying paper alter- 

 nate with these single sheets, and then place the whole under pressure. 

 Change the drying pads every day or two, and dry as rapidly as practicable. 



Summary of Species. 



Polypetalous, 





286 



Monopetalous, 





265 



Apetalous, 





96 



Angiosperms, 





647 



Gymnosperms, 





*3 



Exogens, 





— 660 



Endogens, 





296 



Phaenogams, 





— 956 



Cryptogams, 





5 2 



Total number of species, 





— 1008 



Introduced phaenogams, 144 







Additional species to be expected, 



146 









P. H. WHITCOMB, 







DARTMOUTH STEAM PRESS, 







HANOVER, N. H. 



