1912] BRIEFER ARTICLES 437 
Adiantum cuneatum by Miss Lyon,? and again by Miss Frrcuson’ in 
Pteris, probably P. cristata. Unlike the case cited by Miss FERGuson, 
the basal cell did not give rise to the second egg and ventral canal cell, 
but had divided periclinally into approximately equal cells. In some 
other archegonia a similar periclinal division gave rise to two unequal 
cells, not strikingly different in proportions from an egg and ventral 
canal cell, but not having the characteristic granular appearance 
of such. 
Fics. 1, 2.—Fig. 1, archegonium of Pieris longifolia, showing four neck canal 
nuclei; 500; fig. 2, archegonium in which two eggs and two ventral canal cells have 
been formed; the basal cell has divided periclinally; X 500. 
A third unusual condition, of which no former report has come to 
hand, is one in which a definite wall has been formed between the two 
neck canal nuclei, giving two neck canal cells. This preparation is 
shown in fig. 3. The cells are practically equal in size and very similar, 
or one might be led to believe that this is an early stage in the develop- 
ment of such an archegonium as shown in fig. 2. In this archegonium 
the basal cell appeared to have divided unequally in a periclinal direction. 
2 Lyon, Frorence M., Evolution of the sex organs. Bot. Gaz. 37: 280-293. 
Jigs. 16. 1904. 
3 FERGUSON, MARGARET C., Imbedded sexual cells in the Polypodiaceae. Bor. 
GAz. 51:443-448. pls. 26, 27. I9IT. 
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