NOTICES OF BOOKS AND MEMOIRS 



381 



a 



agree well with this figure, though generally smaller in size. The 

 variety ambiawm was originally detected more than twenty years 

 .__ :Jii.u„ „n^i,^ ft „rim^ nf Paris, and was found shortly afterwards 



in one of the numerous "laiches" at Arcachon. It was hrst 

 noticed as a British plant hy Dr. J. T. Boswell, who detected it in 

 the Orkney Islands; and Mr. Curnow has recently distributed 

 Scilly Islands specimens through the Club The Dyffryn locality 

 is therefore, a connecting link between the extreme stations of 

 western Europe, from the Orkneys in the north to Arcachon in the 

 south. M. Durieu de Maisonneuve finds a separating character 

 between 0. vulyatum and 0. hmtanicum in the surface of he 

 snores which are tuberculated in the former and smooth in the 

 latter.' The spores of the Dyffryn plants are for their size rather 

 coarsely reticulated, and not tuberculated. See Ex. Club Beporto, 

 1870 p is! and 1877-8, p. 20). Mr. Baker and Dr. Boswell 

 ioi fmn the name.— A single specimen sent by Mr. H. Halcro 

 Johnston omT new station in Orkney, the fifth station now 

 known in that island. It was collected 28th July 1879 m a .pasture 

 al the top of crags at the sea-shore at the north-west end of the 



C "S' to „ L. Sent by Mr F. Town^nd from waste 

 around (sand) at Christchurch, Hampshire, 19th July, 1879. U>n 

 Kd by Prof. Babington « a very interesting discovery of Mr. 



ptS'from Balmuto, July, ^^^^^3 ES£ * 

 5 Mr. Baker suppose s t his to b^aj; ar den 1 you ^^ 



flj jwm««»» and 5. ojhc male, between ^^"Vj. t the 



though much nearer S JJJ"-* jfg^.^iW. ; 

 shape of the .^j{^ e ^^ BaLgton thinks it may be 

 * !!^^A^^ is S - ^11 -i-bust 



a luxuriant form oi » "J""--~ ~r £ d VOU ng plants of it 

 as 8. aspern,nn,n (or even ^ mo so , and yo p ^ ^ 



come up ike weeds mih ^HTa i*riJ£ though the 

 more deeply divided than that ot , ^ after 



acute. In 



divisions an .more acu^ ^ ^ ^ d ^ bufc th 



fl ° W T/w J ^tubeiles on which they are seated, become apparent 

 so-caUedwhitetubeicies,on j S . asperrimum, in which 



only when dry, and axe sma ei tnai ^ to 



they are equally green whil the -plant is alive ^^ £ ^ 



better with DeCaiKlolle « jescuptioii o ^ ^ ^ ^ ^^ 

 Ledebour's description oi 6. £ rep n , , 



especially the JS^^** tSeT on lower parte of 



Poa urotma, E^-'^X^ on the bank of the Thames, Kew, 

 panicle than usual. Naturalised on Nic holaon with the 



| mT ey, 30th June, m w «^ rable » uantity of this species 

 following ^-^J' Jew and Mortlake last year, and there 



Z2tt££&« its retaining its holc a specics 



