Notes on Pollen. By Lord Avchurij. 



485 



Platanus orientalis. 

 P. occidentalis. 

 Juglans regia. 

 Fagus sylvatiea. 

 Quercus peduiiculata . 

 Q. sessilijiora. 

 Carpinus Betulus. 

 Betula verritcosa. 

 B. pidifscf'/ris. 

 B. picmila. 

 B. nana. 

 Populiis alba. 

 P. trenmla. 

 P. nigra. 

 P. vionilifera. 



To these must be added : — 



Tkalictrum. 



Poterium. 



Artemisia. 



Hippophae. 



Urtica. 



P. balsa mif era. 



Fraxinus c.vcclsior. 



Grasses. 



CyperaccK. 



Juncacex. 



Potamogeton. 



Triglockin. 



Rumex. 



Choiopodivm. 



Plantago. 



Littorella. 



Hippnris. 



Myriophyllum. 



(Tymnosperms. 



Humulus. 

 Parietaria. 

 Rumex. 

 AmaranthAis. 



Even then the list is typical, rather tban complete. 

 Let us now examine these species as to their pollen. 



Thalictrum 



Poterium 

 Myriophyllum 

 Triglochin maritimum 

 Hippuris 



Artemisia 



Fraxinus 



Plantago 



Bocconia 



Littorella 



Chenopodiace.e- 



Salicornia 

 Sueda 



Chenopodiu7n 

 A triplex i 

 Amaraiithus . 

 Rumex 



According to Mohl, the pollen of T. 



angustifolium is spherical, with many 



pores. 

 Pollen spherical, smooth. 



,, spherical, smooth. 



„ spherical, smooth. 



„ barrel-shaped, with five ribs^ 

 smooth. 



„ elliptic, smootli. 



,, elliptic, smooth. 



„ spherical, smooth. 



„ spherical, smooth, 



„ spherical, smooth. 



Pollen spherical, smooth. 

 „ spherical, smooth. 

 „ spherical, smooth. 

 „ spherical, smooth. 

 „ spherical, suiooth. 

 „ spherical, smootli. 



