12ff NINTH REPORT. 



THE CHARACEiE OF MICHIGAN. 

 Ellen B. Bach. 



Nitella batrachosperma (Reichmb.) A. Br., Nitella flexilis (L. ex parte) 

 Ag., Chara aspera Willd., C. contraria A. Br., C. folio^osa Muhl., C. formosa 

 Robinson, C. fragilis Desv., C. Hicksii Allen, C. Morongii Robinson, C. Rob- 

 binsii Halsted, C. Schweinitzii A. Br., C. sejuncta A. Br., C. vulgaris L. 



The above is a partial list of the Characeae of Michigan. Little attention 

 has so far been paid to the collection of this widely distrbiited group of water 

 plants, though nearly every river and lake in the state contains one or more 

 forms. 



Will not plant collectors throughout the state keep the Characese in mind 

 during their fruiting season, which varies from May to September, or even 

 later, and send specimens to the University laboratory for identification, 

 that we may complete our list of the species of this sta'te? These plants 

 may be either pressed or kept in 3 per cent formalin or 50 per cent alcohol. 



Botanical Laboratory, University of Michigan, Ann Arbor, Mar., 1907. 



