270 THE JOURNAL OP BOTANY 



large quantities of Tillcea muscosa line the heath tracks, form- 

 ing conspicuous red streaks at certain seasons; it may be ex- 

 pected on any suitable area in both East and West Norfolk. 

 Oxycocciis qttadripetala and Narthecium Ossifragum made a great 

 display at Koydon and Grimston. Junipers at Thompson were, 

 we afterwards learned, introduced by the late Lord Walsingham ; 

 Plileum iMeoides was seen in Eev. E. F. Linton's station near 

 Thetford, and Apera Spica-venti in many places ; miniature speci- 

 mens of the last-named grass were taken at Santon, two and a 

 half inches high ; at Cressingham it was two feet high. We have 

 seen it in great quantity as a weed of cultivation to the north of 

 Norwich in recent years. A dwarf specimen of Phegopteris 

 calcarea growing in a mortar-joint of a brick-built bridge in 

 Santon, remote from dwellings, has been under observation for the 

 past two years, and Osmunda was seen in two stations in West 

 Norfolk. 



Our attention has been arrested in almost every visit by the 

 unusual prevalence of albinism ; a large proportion of Erodium 

 cicutarium in Breckland has white flowers and pale green stems ; 

 Calamintha Acinos persistently varies in this direction, and white 

 flowers of Galeopsis Ladanum, Erica Tetralix, Prunella vulgaris, 

 and Pedicularis palustris have been noted. At Castle Acre some 

 tall clumps of Echium vulgare had the blue pigment suppressed, 

 and looked unfamiliar with white flowers streaked with pink. 



VEGETATIVE EEPEODUCTION IN SAGINA NODOSA. 

 By W. G. Travis. 



During the past winter I have had an opportunity of making 

 some observations on the vegetative reproduction of this plant by 

 the axillary buds or bulbils which it develops. In the present 

 paper I propose not only to touch upon the principal points of 

 interest which came under notice in regard to vegetative repro- 

 duction in this species, but to add a few remarks on the occurrence 

 of the plant on the Lancashire coast and the ecological conditions 

 under which it exists. 



Sagina nodosa Eenzl. occurs plentifully in the moist hollows 

 or " slacks " among the sand-hills of the Lancasliire coast. It is 

 one of the first few flowering-plants to colonise the new slacks. 

 In these situations it is not only scattered in greater or lesser 

 quantity all over the moist sandy ground, but forms conspicuous 

 patches. The other pioneers with which it is associated are 

 Agrostis alba vars., Juncus articulatus var. nigritellus and J. hu- 

 fonius. A few other species occur also, but the four mentioned 

 generally constitute, so far as phanerogams are concerned, the 

 principal components of the florula. In these new slacks, where 

 the plant association is an open one, Sagina nodosa has full scope 

 ior a time, but with the increase of vegetation, especially the ex- 



