142 THE JOURNAL OF BOTANY 



Date. English Elm Wych Elm. Winter weather. 



1916 Jan. 16 Jan. 25 Warm January, terrible gales. 



1917 Apr. 4 Apr. 8 Coldest winter for 20 years, 



0° F. early February. 



1918 Feb. 6 Feb. 10 Heavy snow, Januarj^ 



1919 Mar. 30 Apr. 4 Frosty February. 



1920 Jan. 24 Jan. 25 Mild,\vind\' January. 



1921 Feb. 5 Feb. 8 Mild Jan uar^^ 



1922 Feb. 10 Feb. 18 Variable, late spring. 



Mr. Turner's January date for 1905 does not correspond with 

 mine, Feb. 26, but his March dates of 1904 and 1909 do— March 9 

 and 21 respective!}''. Mr. Miller Christy's English Elm dates for 

 1911, Feb. 19, compare with mine, Feb. 18 ; 1912, Feb. 4, with 

 Jan. 16 ; but in 1913 the unusually early date, Jan. 4, does not tally 

 with mine of Jan. 24. The years of 1914-1919 are in close 

 correspondence. 



With regard to the fruiting of the English Elm, I have in my 

 Herbarium fruiting specimens gathered by the Rev. A. Ley in 1887 ; 

 of my own gathering I have fruits dated 1899, which was a cold late 

 spring ; 1902, weather variable, cold February ; 1909, variable, 

 flowers Mar. 21 (data kept for me as I was in Madeira) ; and 1917, 

 which was a bitterly cold, long winter, when neither species of Elm 

 flowered till April. The quantity of fruit was most striking this 

 year (see my note in Journ. Bot. 1917, 162), but I did not observe 

 a similar occurrence here in 1914 as related b}' Mr. Miller Christy. 



I am led to think that as this Elm is a southern and western species, 

 when it flowers early in this country the colder weather supervening 

 later destroys the incipient fruits ; but that when, owing to very 

 cold winter weather, flowering is greatl}^ retarded, the warmer weather 

 following encourages rapid development and maturation of the fruits. 

 I think it will be found that the dates in the Table u2:)hold this 

 theory. 



The Wych Elm is very common in Herefordshire and fruits 

 abundantly. It begins to flower almost always about ten days later 

 than the English Elm, though occasionally tha dates almost syn- 

 chronise, as in 1898, 1903, 1904, 1908, 19li, 1917, 1920, 1921, and 

 these years were either unusually mild or unusually cold. 



The records are all from native trees, not from planted forms or 

 varieties. 



NEW OR NOTEWORTHY FUNGI.— IX. 

 By W. B. Gkoye, M.A. 

 (Plate 563.) 



(Continued from p. 86.) 



355. Leptothyrium Osmanthi, sp. n. 



Pycnidiis amphigenis, stipatis, subglobosis v. lenticularibus, crassis, 

 nitenti-aterrimis, usque 200 /x diam., halone nigro cinctis, postremo 

 cuticulam elevantibus poroque centrali erumpentibus. Sporulis linea- 

 ribus, utrinque rotundatis, plerumque rectis, 12-18 X 2-2| /x, sporo- 



