430 THE JOURNAL OF BOTANY 
such rocks is generally composed of decaying needles of firs or 
pines, and it is surprising how soon such plants as Sedums, 
uny meadow-sweet in the valley of the Drance itself, which flows 
a few hundred feet below on the other side of the road.—H. 8. 
HOMPSON. 
Rapricuna-Hysriw.—Whilst paying attention, during the 
past season, to the plants growing by the River Thames above 
Putney, I have had under observation a form of FRadicula, obviously 
not identical with any one of the three yellow-flowered species 
also growing by the river. This form appears to be a hybrid not 
previously noticed for this country, namely, Radicula amphibia x 
These latter are very much smaller than those of R. amphibta, 
but are larger than the flowers of R. palustris. It is an infertile 
hybrid with barren stamens somewhat shorter than the pistil, 
which swells to but a small extent, and does not produce seed. 
similar. No mention of this hybrid is made in Focke’s Pflanzen- 
maschlinge. nder the name of x Roripa erythrocaulis Borbas 
lt 18 described in Rouy & Foucaud’s Flore de France. —C. EH. 
Britton. 
LrtcestersHire Piants.—A week or so ago I found Scirpus 
compressus Pers., which is new to the county, growing in quite a 
small isolated boggy patch of ground in a hay-field close to Norton 
Gorse, ing’s Norton, Leicestershire. The spot had previously 
yielded a rare moss, Mni me and var. elatum. At the same 
place though nearer the village itself also, curiously enough, I found 
