58 EXTRACTS FROM REPORT OF BOTANICAL EXCHANGE CLUB, 1887. 



as C. submersum. Also, in some seasons and situations, the fruit 

 has neither spines nor tubercles. Tiie style, too, is variable in 

 length. Perhaps members will be induced to examine Ceratophylla 

 in their own neighbourhoods. — Alfred Fryer. 



Luzula maxima DC, var. qracUis Rostrup. Top of the Sneug 

 (alt. 1400 ft.), Foula, Shetland, 25th August, 1887. I send a few 

 specimens from this locality. The very exposed situation in which 

 the plant grows here, combined with late season of gathering, 

 causes the specimens to be somewhat poor. A few, however, 

 retained the flexuous or drooping peduncles which are one of the 

 characteristics of the variety. — W. H. Beeby. 



Sparqanium ner/lectum Beeby. Growing with Sparganiumramosum 

 Curtis, in a ditch below the Causeway Mill, between Gumfreston 

 and Hollow-ways, Tenby, 3rd and 5th October, 1887. Fruits of S. 

 neglcctum also sent from ditches in the Penally Burrows, near 

 Tenby, 5th October, 1887. — Charles Bailey. " The plants are 

 rightly named, but the separate packets contain fruits of ramosum 

 and neglectwn mixed." — W. H. Beeby. New county record. 



Potam.ogeton fluitans Roth. Cultivated plants from Hunts, Co. 31, 

 28th July, 1887. The poor condition of the plant sent is due to 

 none having been gathered until all hope of obtaining fruit was 

 gone. Some were picked up in a withered state after the weed- 

 cutters, and the others were gathered from a rapidly drying-up pond. 

 After this pond became quite dry, the already-formed foliaged 

 branches of P. flititans died away, and the surface of the mud soon 

 became studded with the small tufted shoots of the land-form, which 

 this species produces as freely as P. natans does. This state of the 

 plant was also left ungathered, with the hope of preserving the 

 vigour of the rootstock unimpaired for the production of fruit next 

 season. These subaerial shoots survive throughout the hot, dry 

 summer, and grow until killed by the frosts of late autumn. This 

 species seems dying out in the fens, probably through the frequency 

 with which the drains are cleared of weeds. Hence, too, the plants 

 are cut down before they have time to ripen their fruit, which 

 seems to set freely in natural stations. On the other hand, though 

 cultivated specimens grow into extraordinary vigour, they show no 

 tendency to flower at present. Our plant has affinities with P. 

 natans on the one hand, and with the coriaceous-leaved forms of the 

 lucens-gmw.^ on the other. — Alfred Fryer. 



P. fiahellatm Bab. A splendid series of this, distributed by Mr. 

 Alfred Fryer, in sets of three, viz. : — 839. Drain by Fortrey Hall 

 Farm, Welches Dam, 12th Aug. 1887 ; 810. Same locality, 22nd 

 Aug. 1888; 876. The New Bedford River, 15th July, 1887; all in 

 Cambridgeshire, Co. 29. "The broader-leaved forms from the 

 Ouse and the New Bedford River agree well with Prof. Babington's 

 typical plant ; the finer-leaved forms from Welches Dam are towards 

 the P. 'scoparim' of British authors. The Professor has kindly 

 examined all my gatherings for some seasons past, and considers all 

 the plants now sent as belonging to his P. fiahellatus. I have 

 carefully watched these forms for four years, and have satisfied 

 myself, by the habit of growth and foliage, as well as by the fruit, 



