DoDGE: RELATIONSHIPS OF FLORIDEAE AND ASCOMYCETES 197 
principles is furnished by Sturch (87) who transfers the genus 
Harveyella from the Nemalionales to the Gigartinales on the 
basis of the method of development of the procarp and the forma- 
tion of the auxiliary cell, 7. e. processes that are concerned with 
fertilization and the development of the sporophyte. Twiss (91) 
would transfer Erythrophyllum to the Gigartinaceae and Daines 
(28) Prionitis to the Ceramiales for like reasons. De Bary and 
Janczewski maintained on the same ground that the nature of the 
ascogonium and the method and degree of its development rather 
than the form of the mature ascocarp furnish the best basis for 
the determination of homologies in the Ascomycetes. 
_ New data as to the morphology of the ascogonium and tricho- 
gyne are accumulating rapidly. Investigation of a great number 
of species ranging from the gelatinous Collemaceae to the dry 
Cladoniaceae, or the hard and black Graphidiaceae, including 
both discomycetous and pyrenomycetous forms, discloses the fact 
that a vast majority of these fungi are provided with trichogynes, 
and where no such structure has been found, an ascogonium has 
generally been more or less clearly recognized. It is not improb- 
able that further research will disclose many other interesting 
transition forms such as we now find in Collema pulposum, Asco- 
bolus carbonarius, and Ascobolus magnificus. 
BIBLIOGRAPHY 
I. Agardh, J. C. Species genera et ordines Floridearum. 2: iv—xii. 
Lund. 1851. 
. Bachmann, F. M. A new type of spermogonium and fertilization 
in Collema. Ann. Bot. 26: 747-760. pl. 69. Jl 1912. 
- Bachmann, F. M. The origin and development of the apothecium 
in. Collema pulposum (Bernh.) Ach. Archiv Zellforschung 10: 
369-430. pl. 30-36. 8 Jl 1913. 
. Bary, A. de. Eurotium, Erysiphe, Cicinnobolus. Nebst Bemer- 
kungen iiber die Geschlechtsorgane der Ascomyceten. Abhand- 
lungen Senckenbergischen Naturforschenden Gesellschaft 7: 361- 
455. pl.-r2. 1870. 
Uber die Fruchtentwicklung der Ascomyceten. 
Ny 
oO 
7s 
ou 
w& 
§ 
> 
& 
Leipzig. 1863. 
Bary, A.de. Morphologie und Biologie der Pilze. Leipzig. 1884. 
Bauke, H. Z. Zur Entwickelungsgeschichte der Ascomyceten. 
Bot. Zeit. 35: 314-326. 1877. 
7 
