Note AP — INTRODUCTION TO PART II.
Reading edition
Since this was written, Lippen has described a third stage in the life-history of Polypodium (Zool. Anz. Leipzig, xxxvii, Nr. 5, p. 97 (1911)).
Reading edition
Since this was written, Lippen has described a third stage in the life-history of Polypodium (Zool. Anz. Leipzig, xxxvii, Nr. 5, p. 97 (1911)).