BASISPORIUM GALLARUM MOLLIARD IN MICHIGAN. 81 



and Pertz, working with roots and hvpocotyls of seedlings, blades of 

 Secale. and certain steins, have found the strongest response for a devia- 

 tion of 135 degrees, except in one set of grass-stems, whose curvature 

 was greatest when placed at an angle of 00 degrees from the normal. 



Since in all cases, the weight of opinion has been in favor of one 

 of these two angles, others have been neglected and the present x>aper 

 reports the results of a series of experiments made with the purjiose of 

 determining, for a large number of plants, at which of these two angles 

 of deviation, stems are more strongly influenced by gravity. 



No plants have as yet been found responding much more markedly 

 when inclined at 135 degrees; in but two cases have there been even 

 doubtful results; while repeated experiments with Chrysanthemum, 

 Ageratum, Lavandula, Heliotropium, and Fuchsia plants, and seedlings 

 of Raphanus have shown a much stronger geotropic response for a devia- 

 tion of 90 degrees than for one of 135 degrees. 

 Julia Anna Haynes, 



Botanical Laboratory, University of Michigan, 

 Ann Arbor. 



THE OCCURRENCE OF BASISPORIT M GALLARUM MOLLIARD 



IN MICHIGAN. 



a. w. piersox. 



(Abstract.) 



I discovered in this locality a new species which had never before been 

 described until M. Marion Molliard, a Frenchman, described it in 1902 

 in the "Bulletin de la Soci^t^ Mycologique de France," Vol. 18 (1902) p. 

 107. He found the fungus growing on the dead larvae of Lipara lucens 

 in the galls which this insect produces on the leaves of Phragmites com- 

 munis. I found the fungus growing (1) in this country, and (2) on a 

 different host, viz., cut surfaces of corn stalks. 



A complete description is to be found in his article. 



A. W. PlERSON, 



Botanical Laboratory, University of Michigan, 

 Ann Arbor. 

 11 ' 



