32 



localities visited, but near Pompton Lakes only one plant of 

 C. maculata was observed and a large and flourishing colony 

 was found of C. corymbosa, on one of the ridges, in an open, 

 much-frequented wood, near camping places. 



Just outside the village of Ramsey in Bergen County, is a 

 low wood in which Lycopodium hccidulum Mx. is very abundant 

 and near by a swamp that is possessed by Equisetum and 

 Symplocarpus. 



There are some advantages in botanizing in the early autumn, 

 before the leaves have fallen too abundantly, for the decay and 

 shriveling of many herbs makes it easier to detect some species 

 that are wont to hide. — H. M. Denslow. 



A Mid-Devonian Callixylon; by C. J. Hylander, Amer. Jour. 

 Sci., Vol. IV, Oct., 1922, pp. 315-321, with 6 figs, in text. 



Describes a new species of petrified wood from the Hamilton 

 of Eighteen Mile Creek, western New York. Pit grouping on 

 the radical tracheidal walls in series, determines the reference 

 to Callixylon, a genus established by Zalessky for wood with 

 the grouped pits from the Upper Devonian of the Province of 

 Ekaterinoslav, Russia. As the Russian stems retain primary 

 xylem strands or old cryptogamic wood next the pith they may 

 at once be included in the Pityae. 



American forms are arbitrarily referred to Callixylon, since 

 the inner limits of the secondary wood have not been seen. 

 But as no new generic feature appears, inclusion in any other 

 Cordaitalean genus would be unsatisfactory. 



Three American species with the grouped pits are cited; 

 whence the Callixylon type of secondary wood marks certain 

 widespread forest forming elements of the mid to Upper Devon- 

 ian, and may extend into the Carboniferous, as follows: 



Callixylon Trifilievi Upper Devonian Russia. 



" Oweni " " Indiana. 



" Newberryi Mid-Devonian to 



Lower Carboniferous, Ohio. 

 " Marshii Mid-Devonian New York. 



Thin growth rings are observed in the new Callixylon, and such 

 hence persisted from mid to late Devonian time, having the 

 same development in C. Oweni. These rings are not held to 

 indicate as sharp seasonal change as those of existent plants. 

 But, scant attention has been given the fact that in old and 



