Or LOWKR GREKXSAXD PLANTS. 121 



canals, but the}' may follow an attack of Chermes (the witches' 

 broom). In such a case it is probable that the area uniformly 

 affected might be larger than that resulting from a wound, 

 and so our fossil may have only traumatic resin. On the other 

 hand, there is a strong argument in favour of the resin-canals 

 being normal, in the exceedingly Pine-like character of the rays 

 and their ray-tracheids (PI. IX, fig. 3, and text-fig. 29). 



This new species and P. tSeivardi agree with the Upper 

 Cretaceous Pityoxylon scituatense and P. scitaatensifonne in 

 having considerable quantities of large-sized and resinous paren- 

 chyma associated with the resin -canals, a feature said by Bailey 

 (1911) to be "without parallel among living Pines." 



The radial section (text-fig. 29) is so much like that of several 

 living species of Pinus that the fossil has doubtless considerable 

 affinity with that genus, probably among the species of the 

 section of " soft Pines." 



V. 5429. Type-specimen. It consists now of a fiat wedge of 

 much-weathered secondary wood, 3'oxl'o cm. and 

 18'5 cm. long, as well as some small pieces of the 

 same from which sections have been cut. 



V. 5429 a. Figured, PI. VIII, figs. 1 & 2, arid text-fig. 28. 

 Transverse section of rings of secondary wood, with 

 no pith or outer tissues. The alternation of the 

 seasonal growth is very strongly marked, and the 

 autumn wood is wide and thick-walled. There are 

 series of resin-canals throughout the tissue, as is 

 illustrated. 



V. 5429 b. Figured, PI. IX, figs. 1-3, and text-fig. 29. Kadial 

 section of the above, which shows the ray-tracheids 

 and parenchyma-cells with their pittings as described 

 and illustrated. 



V. 5429 c. Tangential section, showing the rays, some of which 

 are multiseriate and contain large, transversely running 

 resin-canals. Part of the section slopes into the radial 

 direction, in which the rays can be well seen. 



V. 5429 d. Thick, uncovered, transverse section, cut as sample. 

 Lower Greensand ; Woburn, Bedfordshire. 

 [Veasey Coll. ?], transferred from the Botanical Vfpt., 1898. 



