242 BOTANICAL GAZETTE [SEPTEMBER 
author also describes the insect, gives its life history, and suggests methods of 
control—Met. T. Cook. 
Paleobotanical notes.—Miss HoLpEn*' has investigated specimens of a 
conifer from the Trias of New Brunswick which she refers to Voltzia coburgensis 
Schaur. She finds that the foliage of this species is araucarian, the organization 
of the cone abietineous, and the anatomical structure intermediate between these 
two groups. ses apecies oa aie neretore, represents another early mesozoic 
form which may | iti the. Abietineae to the Araucarineae. 
Miss BANcROFT* | has added to the evidence of the uniformity of the mesozoic 
floras in describing some fossil gymnosperms obtained from the Jurassic of India. 
The cycadophyte remains are of the Williamsonia type, and the vegetative 
organs show a combination of the characters of Bennettitales and Cycadales. 
Miss Bancrort’s has described a new stem genus (Rhexoxylon) from the 
later Paleozoic of South Africa. Its general structure suggests relationship with 
Medullosa and Steloxylon, and it seems certainly to be an addition to the Medul- 
loseae. A peculiar feature is the character of the inner series of vascular strands, 
each one consisting of two parts, the outer small and normally oriented, the inner 
larger and inversely oriented, the two parts being almost in contact. An outer 
series of strands consists of normally oriented xylem. As contrasted with medul- 
losean stems in general, the wood is compact, the medullary rays are uniseriate, 
and the pitting of the tracheids is biseriate. 
_ SEWARD and Miss BANcrort* have added to the list of species of Scottish 
Jurassic plants, describing new species in Thinnfeldia, Brachyphyllum, M asculo- 
strobus, Conites, Strobilites, and Cedroxylon. 
SEWARD* has published a memoir dealing with two collections of mesozoic 
plants: the ict one from Afghanistan, made by Mr. H. H. HAYDEN in 19075 
rou hia from barre anne by Mr. Griespacu. The composition of the 
ncluding the following great groups: Equisetales 
eve species of RO Fikcales (one water fern and several true ferns, 
including a new genus, Haydenia, of Cyatheaceae), Ginkgoales (3 genera), 
Bennettitales (7 species, among them a new Williamsonia and a new N ilssonia), 




* HOLDEN, oie oe fossil plants from Eastern Canada. Ann. Botany 27? 
243-255. pls. 22, 23. 
32 BANCROFT, na On some — i Linn. Soc. 
gymnosperms. Trans. 
London II. Bot. 8:69-86. pls. 7-9. 19 
CROFT, NELLIE, . ae a new medullosean stem. bid. 
ide pls. 10, 11. 1913. 
bn So Sewarp, A. C., and Bancrort, N., Jurassic plants from Cromarty and Suther- 
Scotland Trans. Roy. Soc. — rood Tomas pls. 1, 2. 1913- 


