90 N. WILLE, BIDRAG TIL ALGERNES PHYSI0L06ISKE ANATOMI. 



WiLLB, Zellkenie n. Poren b. Phycochromaceen. = N. Wille, Ueber die Zellkerne und die Poren der Wände bei 

 den Phycochromaceen. (Berichte d. deutsch. bot. Gesellsch. B. 1. Berlin 1883.) 



WiTTROCK, Monostroma. := V. B. Wittrock, Försök till en inonographi öfver algslägtet Monostroma. Stock- 

 holm 1866. 



' , Pithophoraceae. = V. B. Wittrock, On the developmeut and systematic arrangement of the Pithophoraceae 



a new order of Algae. (Nova acta reg. soc. se. Upsaliensis. Ser. III, Vol. extra ordinera. Upsala 1878.) 



Wright, On Griffithsia = P. Wright, On the cell-structure of Griffithsia setacea (Ellis), and on the development 

 of its Antheridia and Tetraspores. (Transactions of the E. Irish Acad. Vol. 26, N:o 18. Dublin 1879.) 



, On Formation of Siphons. = P. Wright, On the Formation of the so-called »Siphonsu, and on the 



development of the Tetraspores in Polvsiphonia. (Transactions of the E. Irish Akad. Vol. 26, N:o 18. 

 Dublin 1879.) 



