1903] MITOSIS IN PELLIA 49 
26. SCHAFFNER, J. H., The embryo-sac of Adisma Plantago. Bort. Gaz. 
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27. Contribution to the life history of Lilium philadelphicum. 11. 
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28. Karyokinesis in the root tips of A//ium cepa. Bot. GAZ. 24 :225- 
246. pls. 27-22. 1898. 
29. SHAW, W.R., Ueber die Blepharoplasten bei Onoclea und Marsilea. Ber. 
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33- Karyokinetische Probleme. Jahrb. Wiss. Bot. 28:151-204. Ads. 
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34. Kerntheilung und Befruchtung bei Fucus. Jahrb. Wiss. Bot. 
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EXPLANATION OF PLATES XII-XIV. 
All figures were made with a Bausch & Lomb camera lucida, Zeiss 
apochromatic immersion objective 2™ 1.30 N. A., and Zeiss compensating 
ocular 12; magnification, about 1,500 diameters. All figures are from Peé/ia 
— Raddi, except figs. 7, 2, 77, and 72, which are from Pellia calycina 
PLATE XU, 
(Figs. 7-8, mitoses in germinating spore; /—6 first mitosis, 7 and § third 
mitosis ; figs. 8 and zo, mitosis in apical region of thallus.) 
Fig. 1. Area about the elongating nucleus has become rather free frem 
Starch grains and larger granules. Asters and caps are present. 
Mo. Bot. Garde 
1904. 
