CRETACEOUS CONIFERALES 4! 
and less well preserved, Ше tracheary tissues have suffered greatly 
from decay, while the stone cells are much better preserved than 
they are in the material illustrated in our figures. This swelling up 
and lamination of sclerenchyma makes it necessary, in many cases, 
to study the structure of both badly and well preserved branches 
which present the anatomical peculiarities of Brachyphyllum macro- 
carpum and Geinitzia Reichenbachi. Figure 2, Pl. 18, shows a 
transverse section of the wood, X 180. It may be noticed that the 
resin cells, which are so characteristic of the wood of the living 
species of Sequoia, are quite absent in this case. Figure 3, Pl. 18, 
shows a longitudinal section of the wood, X 500, in which the pitting 
it obviously araucarineous. Figure 4, Pl. 18, shows another similar 
section, under the same degree of magnification, with alternating pits. 
In the tracheid to the right of that containing these pits may be seen 
a single row of pits, some of which are in contact and others show 
a round contour. We have in fact in this wood the same type of 
structure that is found in Brachyphyllum, as described on p. 35 of 
this Memoir. In the case of the remains commonly called Sequoia 
Reichenbachi we have accordingly to do, not with a species belong- 
ing to the modern genus Sequoia, but with one of araucarineous 
affinities, and this instance is another of the many in which we have 
learned the futility of attempting to definitely refer Mesozoic leafy 
twigs to genera still living on the sole basis of external habit. In 
this connection it is interesting to recall that Schimper?? expressed 
his ideas in regard to the probable relationship of the Cretaceous 
so-called Sequoias in the following words: “Les especes de l'epoque 
crétacée reproduisent par leurs feuilles tétragones courbees en faux 
l'aspect des Araucaria, avec lesquels elles ont été quelquefois con- 
fondues. Elles pourraient bien former un genre particulier." 
Locality: Androvette pit. Plate 5, figs. 7, 8, 10, collected by 
Arthur Hollick. Plate 5, fig. 9, collected by William Т. Davis. 
Figures 7, 9, specimens in Mus. Staten Island Assoc. Arts and Sci.; 
figs. 8, 10, specimens in Mus. N. Y. Bot. Gard. 
Plate 8, figs. 3, 4; Pl. 16, figs. 2-4; Pl. 17, figs. 1-4; Pl. 18, figs. 
1-4, collected by E. C. Jeffrey and Arthur Hollick. Specimens in 
Jeffrey collection, Cambridge, Mass. 
% Palaeont. Veg. 2: 314. 
