On the Roots of Medullosa anglica. 
BY 
E. A. NEWELL ARBER, M.A., F.G.S., 
Trinity College , Cambridge ; University Demonstrator in Palaeobotany. 
With Plate XX. 
HE first British specimens of Medullosa , a genus of 
J- Palaeozoic plants belonging to the Cycadofilices, were 
described by Dr. Scott 1 in a very interesting and complete 
memoir, published in 1899. Dr. Scott there gave the first 
account of the structure of the roots of a Medullosa . 
A short time ago it was found that one of the petri- 
factions belonging to the Binney Collection in the Wood- 
wardian Museum, Cambridge, contained a portion of a stem 
of Medullosa anglica , Scott, with which several roots were 
associated. No section of this specimen could be found 2 , 
although the petrifaction had been cut previous to the 
presentation of the collection to the University in 1892. So 
far as I am aware, Binney did not refer to this specimen in 
any of his papers. 
1 Scott, Phil. Trans. Roy. Soc., Ser. B, vol. cxci, 1899, p. 81. 
2 A section of Medullosa anglica (S. 3533), formerly in the possession of Sir 
Joseph Hooker, and now in the General Collection of Sections of Fossil Plants in 
the Geological Department of the British Museum (Nat. Hist.), which was 
undoubtedly cut from a Binney specimen, may very possibly have been derived 
from the Cambridge specimen. I am indebted to Professor F. W. Oliver for 
calling my attention to this section. 
[Annals of Botany, Vol. XVII. No. LXVI. March, 1903.] 
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