CONTENTS
[The Fern Flora of Illinois] 32 [Ophioglossaceae] 35 [Osmundaceae] 35 [Polypodiaceae] 36 [Salviniaceae] 40 [Equisetaceae] 40 [Lycopodiaceae] 41 [Salaginellaceae] 41 [Isoetaceae] 42 [A Problematical Fern (Gymnogramma lanceolata)] 42 [The Tall Spleenworts] 45 [Further Notes on Variation in Botrychium Ramosum] 47 [Rare Forms of Fernworts—XXII] 48 [Still Another Christmas Fern] 48 [Polystichum acrostichoides f. Gravesii] 49 [Notes on Various Ferns] 51 [Schizaea Pusilla at Home] 53 [Pteridographia] 55 [Index to Recent Literature] 60 [Editorial] 61 [Book Notes] 62
THE FERN BULLETIN | ||
| Vol. XX | APRIL, 1912 | No. 2 |