284 



THE AMERICAN NATURALIST [Vol. XL 



JUEL, H. O. 



: 04. Uebor den Pollonsehlauch 

 56-62, pi. 3. 



nd Eritwickelung des Pollens 1 



'82. lieitriige zur Kenntniss der Pollcn-entwickelung der Cycadeen 

 urid Conifcrcn. Bot. ZciL, vol. 40, pp. 814-818, 835-844. 

 Land, W. J. (J. 



: 02. A Morphological Study of Thuja. Bot. Gaz., vol. 34, pp. 249- 

 Lam), W. J. G. 



: 04. kSperrruitogencsis and Oogenesis in Ephedra trijurca. Bot. Gaz., 

 vol. 38, pp. 1-18. pis. 1-5. 

 Lang, W. H. 



'97. Studios in the Development and Morphology of Cycadean Spo- 

 rangia. I. The Microsporangia of Stancferia paradoxa. Ann. 

 Hot., vol. 11, pp. 421-438, pi. 22. 



(Ill and I'hnbryo of 

 l)ry(i of Cryptomeria 



220-23(), 301-34(). 



