391 





The one-leaved ash (lifters from all the preceding in that its 



abnormality lies, not in habit nor in colour of leaf, but in the 

 leaves being simple and consisting of one large, ovate blade 



instead of the normal pinnate arrangement of nine to fifteen 

 much smaller leaflets seen in the common ash. Some seeds sent 

 to Kew from Barton Court, near Canterbury, were sown in 1916. 

 Of the sixty-nine plants raised, thirty-three are true heterophylla, 

 the other thirty-six ordinary pinnate-leaved Fra-rinvs excelsior. 

 Several plants show an intermediate state such as is represented 

 by the sub-variety heteropltylla laciviata, and have, like that 

 tree, leaves composed of three, or sometimes only two, leaflets. 

 No leaf, however, is to be found intermediate in number ot 



leaflets between the trifoliolate and common pinnate arrange- 

 ments. 



The result of the experiment is to show that a sufficient stock 

 of one-leaved ashes can be got on their own roots with little trouble 

 bv means of seeds. 



w. J. B. 



r 



Spartina Townsendii at Clevedon, Somerset. — A report on 



the conditions of the Spartina plantings at Clevedon (see Kew 

 Bull. 1918, pp. 26-31, with map on p. 29), as they presented them- 

 selves about the middle of September of the present year, has 

 been received from Miss Ida M. Roper. It appears from this 

 report that the Spartina growth in the north-eastern section, 

 that is, towards the river Kenn, has increased in a marked degree 

 and that the outer strip of grass has completely joined together 

 for considerable lengths ; but there are still gaps 1-6 yards wide 

 through which the tides rush in, denuding to some extent the 

 surface behind. Yet even there miniature Spartina meadows 

 I have been formed from 5-10 yards wide and 40 yards long, so 



L that there is a reasonable prospect of the inner mud shore 



becoming eventually completely covered over with Spartina. 

 Further on, at B of the map, where the breaches in the sea bank 

 occur, no Spartina has been able to maintain a footing, and the 

 conditions here are as threatening as before. Beyond this gap, 

 outside the three small bights, the Spartina has been able to hold 

 its own in the first half, but suffered much by washing away in 

 the other half, that is towards the Teo River, All along this 

 stretch the conditions for Spartina growth appear to be not 

 very favourable to judge from the general lack of vigour. It is 

 suggested that closer planting from the start or successive 

 additions in the intervals between the original clumps might 

 save many plants and accelerate their closing up. It should be 

 pointed out that the description of the scale on the map quoted 

 above should read 4 inch — 1 mile, but the map has been reduced 

 a little in reproduction. 



o. s. 



Cuscuta suaveolens, Ser. (C. racemosa, Mart., var. cliiUana, 

 Engelm).— In the Journal of Botany, vol. 46, p. 241 (1908), 

 Br. 1 iY. B. Hemsley published a paper dealing with the occurrence 

 in Britain of three alien species of Cuscvta. One of these, 





