10 A CATALOG OF ILLINOIS ALGAE 



Transeau (1925) published a critical analysis of the genus De- 

 barya and gave distribution records of the known species, including 

 Debarya decussata Transeau (now Zygnemopsis decussata Transeau) 

 from Illinois. The following year (Transeau 1926) a similar treatment 

 of the genus Mougeotia, including 14 Illinois species and varieties, 

 was published. 



TifTany (1928) monographed the genus Bulbochaete, listing 13 

 species and varieties as occurring in Illinois. This paper was followed 

 (Tiffany 1930) by a definitive illustrated monograph of the family 

 Oedogoniaceae, the first comprehensive treatment of this group to 

 appear in the English language. Distribution records known to the 

 author at that time show Illinois to be represented by 13 species and 

 varieties of the genus Bulbochaete and 69 species, varieties, and 

 forms of the genus Oedogonium. Tiffany (1937) revised his mono- 

 graph, including only those species known to occur in North America, 

 as a special edition of "North American Flora" published by the New 

 York Botanical Garden. Additional distribution records and changes 

 of synonomy resulted in a slight shift in the number of species of this 

 group from Illinois. At this time (1937) Illinois records numbered 

 14 species, varieties and forms of Bulbochaete and 76 of the genus 

 Oedogonium. 



Brown (1929) published her interpretation of the family Vaucheria- 

 ceae and listed Dichotomosiphon tuherostis (A. Br.) Ernst and 7 species 

 of the genus Vaucheria from Illinois. 



Eddy (1930) pubHshed an account of the "Freshwater Armored or 

 Thecate Dinoflagellates," listing 5 genera and 16 species of this group 

 known to occur in the United States, 3 genera and 10 species of which 

 were reported from Illinois. 



Ahlstrom (1937) studied variability in the genus Dinobryon and 

 listed 6 species and varieties collected from Lake Michigan and small 

 lakes of northeastern Illinois, 



Smith (1933) mentions a few Illinois algae in his "Freshwater Al- 

 gae of the United States," including Sirogonium illinoisense (Trans.) 

 Smith, originally described as Spirogyra illinoisensis by Transeau 

 from type material collected in Illinois. 



Miscellaneous Papers 



The following papers are mainly experimental studies involving the 

 use of algae collected in the State. Davis (1904) studied oogenesis 

 in the genus Vaucheria, using as a source of material a collection of 

 Vaucheria geminata forma racemosa (Vauch.) Walz, from Chicago, 

 Cook County. Wesley (1928) studied the asexual method of reproduc- 

 tion in 4 species of Coleochaete collected in Washington Park, Chicago. ^ 



2 Not all of these records are recorded specifically as coming from Washington 

 Park, but such may be inferred from the text. 



