ON THE USE OF POLLEN 
Thymelee. 
Polygonee. 
Chenopodee. 
Amaranthacee. 
Euphorbiacee. 
Urticee. 
Plumbaginee. 
Plantaginee. 
Tropeolee. 
Ranunculacee, genera 
with an Eteri 
Alismacee. 
Synantheree. 
ipsacee. 
Caprifoliacee. 
Rubiacee. 
Jasminee. 
Convolvulacee. 
Polemoniacee. 
Labiate. 
Verbenacee. 
Tiliacee. 
Malvacee. 
Berberidee. 
Polygalee. 
Portulacee. 
Ficoidee. 
dlicinee. 
5. Represents the ordinary form in Ericinee and Epacri- 
dacee. 
6. The usual kind of pollen in Boraginee. 
7. The universal form in Umbellifere. 
In this and the 
last case, the pollen is represented as having dehisced inan ` 
acid. 
8. a, the pollen dry; 5, in water; c, in acid; this pollen pre- 
vails in : 
Rutacee. 
Ranunculacee, follicular 
genera. 
