PAPERS BY MEMBERS 75 



Streams. Fruits from March to May. Produced akin- 

 etes in 1912. Fide Collins. 

 Spirogyra areolata Lagerh. 



Occurs in the pond west of Greenup, in the pond on the 

 Brookhart farm southwest of Oilfield and Hodgen's 

 pond. 

 Spirogyra catenaeformis (Hass.) Kuetzing. 



\'ery abundant in pools, ponds, and small streams. 

 Fruits during April. ]\Iay. and June. Fide Collins. 

 Spirogyra circumlineata mss. 



Resembles varians, but is considerablly larger. Found in 

 Marshall pond during May. 1912. 

 Spirogyra communis (Hass.) Kuetzing. 



Common in ponds and intermittent streams. Fruits from 

 April to June. 

 Spiragyra condensata (\'auch.) Kuetzing. 



\*egetative filaments apparently of this species have been 

 found in several small streams and ponds. It has been 

 found in fruit only once in Campus creek about one 

 mile from the Normal school. The dimensions and 

 appearance correspond closely to Petit's description. 

 Spirogyra crassa Kuetzing. 



Rather frequent in ponds at Charleston, Ashmore, Casey 

 and Newton. Dimensions often smaller than those 

 given in Collins' Green Algae of Xorth America. 

 Fruits from May to July. 

 Spirogyra decimina (Mueller) Kuetzing. 



A'ery generally distributed in streams and ponds. Fruits 

 commonly during June, July and August. Fide Col- 

 lins. 

 Spirogyra decimina triplicata Collins. . 



]\Iore abundant than the type. Frequently associated 

 with it. Fruits about the same time. Fide Collins. 

 Spirogyra dubia Kuetz. 



Found during the summer months in the Polk street 

 pond. Charleston and the pasture ponds south of Ash- 

 more. 

 Spirogyra fluviatilis Hilse. 



Has been found fruiting in the Big Four ponds, Charles- 

 ton, and m the Embarras river near Greenup, and 

 \\'heeler. The cells have three or four chromatophores 

 and the spores have the median wall pitted. Fruits 

 during the summer months. 

 Spirogyra gracilis (Hass.) Kuetzing. 



Rare in swampy intermittent stream near Casey. Found 

 fruiting in April. 



