VO l889 n '] PROCEEDINGS OF THE NATIONAL MUSEUM. 609 



twenty or more rows of cells superimposed in one series. Rings of 

 growth slightly marked. Approaches C. Brandlingii, but with the 

 medullary rays much longer. (Dawson.) 



Middle and upper coal-measures, Joggins, Malagash, Pictou, Glace 

 Bay, Miramichi, etc. 



DADOXYLON Endlicher. 



Araucarites Presl. Araucarioxylon Kraue. 



1. Dadoxylon Beinertianum Endl. 



Endlicher, Syn. Conif., p. 300. 



Araucarites Beinertianus Giippert, Foss. Fl. Schles. in Wimmer's Fl. v. Schles. ed. 

 2, Vol. ii, p. 218 ; Monog. d. Foss. Conif., p. 233. PI. xlii, figs. 1-3 ; xliii, fig. 1. 

 Araucarioxylon Beinertianum Kraus in Schiinp. Pal. V6g., Vol. n, p. 381. 



Annual rings evident ; tracheitis broad, thin walled ; pores in one to 

 four series, approximate; medullary rays in a single series of from one 

 to ten superimposed cells. (Goppert.) 



Subcarboniferous formation, Falkenburg, in Silesia. 



2. Dadoxylon Tchichatcheffianum Endl. 



Endlicher, Syn. Conif., p. 300. 



Araucarites Ichichatcheffianus Goppert in Tchichatcheff, Voyage dans 1' Altai, p. 

 389; Monog. d. Foss. Conif., p. 235. 



Concentric circles distinct, broad, equal ; tracheitis with one to four 

 series of hexagonal pores ; medullary rays in a single series, similar. 

 (Goppert.) 



Subcarboniferous formation, Russia. 



3. Dadoxylon Buchianum Endl. 



Endliche.r, Syn. Conif., p. 300. 



Protopitys Buchiana Goppert, Monog. d. Foss. Conif., p. 229, PI. xxxvii, figs. 



4-7; xxxvm, figs. 1,2. 

 Araucarioxylon Buchianum Kraus, in Schiinp. Pal. Veg., Vol. II, p. 381. 



Concentric circles indistinct ; tracheids prosenchymatose, rather 

 thick- walled ; pores contiguous, compressed, in a single series, not 

 observed on walls parallel to the medullary rays ; medullary rays sim- 

 ple, of a single row of superimposed cells. (Goppert.) 



Subcarboniferous formation, Frankenberg, in Hesse. 



4. Dadoxylon Vogesiacum Ung. 



Unger in Kochlin-Schlumb. et Schimp., Terr, de trans, des Vosges, p. 342, PI. 

 xxx, figs. A, 1-4. 



Concentric circles apparent to the naked eye, nearly l mm broad; 

 medullary rays in transverse section appear numerous ; tracheids pro- 

 vided with one or two rows of pores which are contiguous and rounded 

 when in a single series, irregularly hexagonal when in two series; 

 medullary rays numerous, composed of a single layer of superimposed 

 cells. (linger.) 



Grauwacke, of Niederburbach. 

 Proc. K M. 89 39 



