PLANTS OF GEORGIAN BAY . 209 



SESSIONAL PAPER No. 39b 



Nodularia paludosa, Wolle. Swale near Colpoy's Bay, May 20: Swamp, Golden 



Valley, June 1. 

 Anabaena torulosa, Lagerheim, Swale, Colpoy's Bay, May 20; Swamp, Golden 



Valley, June 1. 

 Stigonema mamillosum, Agardli. Bog, Mud Lake, near Colpoy's Bay, June 7. 

 Calothrix pirietina, Thuet. Damp place on limestone rock, Colpoy's Bay, May 11. 

 Ophiocytium cochleare, A. Braun. Swale, Colpoy's Bay, May 20; Swamp, Golden 



Valle}^, June 1 ; Swamp near Boat Lake, June 16; Ditch, Oliphant, June 14. 

 Ophiocytium parvulum, A. Braun. Swale, Colpoy's Bay, May 20; Swamp Golden 



Valley, June 1; Bog, Mud Lake, June 7; Swamp near Boat Lake, June 16; 



Ditch, Oliphant, June 14; Pool, Hope Bay, June 8. 

 Ophiocytium gracilipes, Rab. Scarce, in a collection from a marsh on the Cape 



Croker road. May 30. 

 Conferva bombycina, Agardh. Swamp, Golden Valley, June 1; Swamp, Mar road, 



June 5. Diteh, near Boat Lake, June 16; Stream in sandy shore, Oliphant, 



June 14. 

 Zygnema leiospermum, De Bary, common near mill at Lake Isaac, June 5. 

 Spirogyra catenaeformis, Kuetzing, Bog, Mud Lake, June 26. 

 Spirogyra varians, Kuetzing. Common with abundant zygospores, in ditch near 



Wiarton, May 5. By May 26 it had completely disappeared though the ditch 



still contained plenty of water. Scarce in a swamp near Boat Lake, June 16, 



zygospores present. 

 Spirogyra orthospira, Naegeli. Small stream from spring, Oliphant, June 14, 



in all stages of conjugation; Ditch, Colypoy's Bay, June 23. 

 Spirogyra weberi, Kuetzing. Common in pools in sand of shore of Lake Huron at 



Golden Valley, in all stages of conjugation, June 1; Ditch, Lion's Head, June 8, 



just beginning conjugation; in small stream in sandy shore at Oliphant, June 



14, spores mature; Swamp, Adamsville, June 8. 

 Spirogyra insignis, Kuetzing. Ditch, near Wiarton, June 4, spores nearly mature. 

 Mougeotia genuflexa, Agardh. Common in a small marsh near Purple • Valley, 



May 30, very sparingly fruited; Swamp, Golden Valley, June 1. 

 Mougeotia scalaris, Hassall. Near mill, Lake Issac, June 5; Pool in swamp at 



Mud Lake, June 6. 

 Mougeotia viridis, Wittrock. Common in swale, Colpoy's Bay, May 20. 

 Ohlamydomonas communis. Snow. Abundant in a collection from a swamp 



on Mar road, June 5. 

 Chlamydomonas globosa. Snow. Common in pools and swamps throughout 



the Peninsula. 

 Pandorina morum, Bory. In small marsh at Sky Lake, May 28; in marsh on 



Cape Croker road. May 30; Swamp, Golden Valley, June 1; abundant in a 



collection from a swamp on Mar road, June 5. 

 Tetraspora lubrica, Agardh. Common in a stream in a pasture, Colpoy's Bay, • 



April 30th; in pools along a bush road, near Mar, May 10. In a stream be- 

 tween Colpoy's Bay and Purple Valley, May 27. 

 Chlorococcum humicola, Rabenhorst. Common under dripping water. 



