446 BOTANICAL GAZETTE [NOVEMBER 
contribution deals chiefly with stratigraphy, but a fact of botanical interest 
is that several species, including Amnularia galioides, Sphenopyllum majus, 
Lepidodendrom dichotomum, and three species of Sigillaria, were found in a 
higher horizon (Upper Coal Measures) than known before in Great Britain. 
Miss HoLpEns has begun a series of contributions dealing with the anatomy 
of mesozoic conifers, the first one giving the results of a study of some Jurassic 
material from Yorkshire. The collection proved to contain some typically 
abietineous woods and some typically araucarian woods, but most of the woods 
were intermediate between the two. It is concluded that the character of these 
transitional woods corroborates the view that the Abietineae are the oldest 
conifers and that the araucarians have been derived from them. A remarkably 
strong statement is the following: “Comparative examination of living and 
fossil forms leads to the rejection of os criteria except cellulose bars of Sanio 
as an infallible test for tribal affinitie 
Miss Hotpen*’ has investigated a Tie of lignite from some Middle 
Cretaceous beds of New Jersey. Most of the plants belonged to Cupressinoxy- 
lon, Araucarioxylon, and Brachyoxylon, and will be described later. In the 
present paper three types of Pityoxylon are described as new species: Pinus 
protoscleropitys, Pityoxylon foliosum, and P. anomalum. The first mentioned 
is probably the earliest form with all the characters of a modern hard pine, 
and the occurrence of such a pine as early as the Middle Cretaceous is thought 
to argue strongly for the great antiquity of the genus Pinus. Pityoxylon 
foliosum is probably the wood of Prepinus, all the leaves being borne directly 
on the main axis, and combining characters that are now separated in hard 
and soft pines. P. anomalum has a woody structure like that of Prepinus, 
but all the leaves are borne on short shoots. 
cupiocat has described a leaf from the Jurassic of Yorkshire which he 
represents a new genus (Eretmophyllum) of Ginkgoales. The leaves 
differ | from those of Ginkgo in being oblanceolate or linear, but approach those 
of Ginkgodium in outline; the leaves of the latter, however, are shorter and 
comparatively broader and are often deeply divided at apex. The most 
important distinction, however, is found in the venation. 
Sewarp* has described some dicotyledonous leaves from the coal measures 
of Assam, which are probably Tertiary, although there are claims that they 
5’ HotpEN, Rurtu, Contributions to the anatomy of mesozoic conifers. I. Jurassic 
coniferous woods from Yorkshire. Ann. Botany 27:533-545. pls. 39, 49- 1913- 
———, Cretaceous Pityoxyla from Cliffwood, New Jersey. Proc. Amer. Acad. 
48:609-623. pls. 4. 
7 THomas, H. wis HAW, On some new and rare Jurassic plants from Yorkshire; 
Eretmophyllum, a new genus of Ginkgoalian leaf. Proc. Cambridge Phil. Soc. 17° 
256-262. pls. 6, 7. 1913 
8 SEWARD, AC Di Pa ee ¢ a 1 f Accam Records 
Geol. Survey India 42: 93-101. pls. 17, 18. 1913. 

