LETTERATURA DELL'ARGOMENTO 
Arber N. — On part history on the Ferns. Ann. of. Bot. z0, 1906. 
Td. .:— The N of Glossopteris Browniana Brong. Quart. Tourn. 
Geol. Soc, LXI, 
Atkinson G. — The su; ble influence of distri tition on the evolution 
| of the vegetative Phase of the Sporophyt. The Amer. Naturalist. 1896. . | 
Id. — Compar. study ot the structure and function of the sporangia oi 
Ferns. in the-dispərsion of Spores. Int. Iourn. Microsk. C. f. Bot. I. XXI. 
Id. — The extent of the Annulus and the funktion of the different Parts 
of the Sporangium of Ferns in the dispersion of Spores. Torrey Bot. Club xx 
ta E The Study of the Biology of Feros by the Collodion Method for 
adwanced and collegiated Students, New Iork. 1894. 
Brnson M. — The sporangiophor. a. unit. of the structure in the Preridophyia, 
New Phytol. VII, 1908. 
Bertrand P. — Sur les affinites d. Zygopter desi, ©. R: Assoc. Frane. p. Vu 
vanc. de Se. Reims, 1907. 
Blasdale W. — On certains leaf-hairs structures. Erythea Vol. I, 1893. 
Bower F. — O. Is the Eusporangiate or the Leptosporangiate the more prim 
tive type in the Ferns? Ann of Bot. Vol. V, 4, XVIII s 
Buller A. — The function and fate of the Cystidia of Coprinus atramentari 
| together with some general remarks on Coprinus fruits bodies. Ann. 
XXIV, 1910. 
Christ H, — Die TRA d’Erde, 
Id. -- Die Geographie d. Farne. Basel 1910. 
Christensen C. — On. a, natural, Classif. of the Species of Dryopteris. V 
8 K. K. Zool. Bot. Gesellsch, Wien [I XI, 1911. 
Czapek F..— Zur Chemie d. Zellmembranen 6: d Each. a. ee. Flo 
1899, LXXXVI. 
"De Gasparis A. — Contrib. alla biologia d. Felci. Atti d, R. Ace. d. Sc. F 
e Mat. Napoli 1908. 
`: Demelins P. — Beitr. Z, Kenntnis d. Cyetideù, ta, a. KK, Zool. Bot. 
2 'sellsch. Wien. LXI, De 
Dummer R. — Grape Sugar asa. excretion im. Platycerium. Ann. Bot. XXV, 
| Durand E. — Sporangial trichomes. The Ferns Bullet. XIV, 1906. 
‘Fee A. — Mom. sur la Famille d. Fougeres. Strasbourg 1844-46. 
| Figdor — Ueb.. La extranupt. Nektarien Yi Pearläiem aquilinum Bot. Zeit. 
