176 THE JOURNAL OF BOTANY 
tostely to raking took place in the Cyatheace@ and Polypodiacee. 
the ancestral protostele of these two orders never 
contained a definite pith, and its conversion into a solenostele began 
by the replacement of some of its xylem elements by phloem, later 
on by endodermis and ground-tissue. This suggestion is not i 
any way affected by the question as to the cortical or stelar ag 
of the internal ground-tissue. The xylem in — bees of fern- 
Ww 
xylem elements are more or less evenly disibuted all round the 
periphery of the xylem mass, or else they are localized in definite 
would seem that endar archy originated in the leaf- trace, snd ‘that 
in general, it appeared in the stem only when the neste of ha 
leaf-trace had begun to dominate the structure of the latt 
In the Transactions of the British Mycological Society - 1902, 
Dr. M. C. Cooke, Miss A. Lorrain Smith, and Mr. Carleton Rea 
supply lists of fungi that have been aieieds to the Flora of our 
country during the past year. The various a have been 
successful in adding many new species to science, and also in find- 
ing forms already recorded on the Gonna: Fungi i have an un- 
usually wide gtr a owing to the lightness m the 
spores, and the British Isles, as a field of discovery, are not yet 
. Biffen aisles an interesting account of 
the mould der Rees! ‘mirabilis, the entire life-history of which he 
has been able to tra Dr. C. B. Plowright gives a list of British 
Puccinie or Umbellifera according to Lindroth’s recent classifica- 
lis 
interest and is practically indispensable to whoever wishes to keep 
abreast of such a growing science as mycology. 
Mr. Wituam Rosison’s new serial Flora and Sylva is hand- 
some, but not cheap. The first number contains forty-six well- 
printed quarto pages and two excellent coloured plates, with other 
illu ustrations in the text ; but The Burlington Magazine has lately 
n be given for half-a-crown (net). 
THE HE recently issued part of the Flora of Tropical Africa contains 
the completion of the Asclepiadee by Mr. N. E. Brown; the Legania- 
cee by Mr. J. G. Baker; and the Grins by Messrs. Baker an 
Tae publication is announced of the Alya-F ee of Yorkshire, 
as a account of the known Freshwater Alge of the County, 
many notes on their affinities and distribution,” by Messrs. 
We and G. 8. West. 
