166 



PROCEEDINGS OF THE 



Crowberry, . 

 Dwarf-Spurge, 

 Wall-Pellitory, . 

 Least-Willow, 

 Common Juniper, . 

 Common Yew, 

 Common T way-blade, 

 Heart-leaved Tway-blade, 

 Green Man-orchis, 

 Broad-leaved Garlic, 

 Lesser Water-Plantain, 

 Great Eeed-mace, . 

 Floating Bur- weed, 

 Grassy Pond-weed, 

 Spreading Millet-grass, 

 Water Whorl-grass, 

 Common Quaking-grass, 



Common Ceterach, 

 Pale Mountain Polypody, 

 Heath Shield-fern, 

 Sea Spleen-wort, . 

 Scottish Filmy-fern, 

 Tunbridge Filmy-fern, 

 Common Osmond royal, 

 Common Moon-wort, 

 Lesser Alpine Club moss, 

 European Quill- wort, . 



Fer 



ns, etc. 



Empetrum nigrum. 

 Euphorbia exigua. 

 Parietaria officinalis. 

 Salix herhacea. 

 Juniperus communis. 

 Taxus baccata. 

 Listera ovata. 



cordata. 



Aceras anthropophora. 

 Allium ursinum. 

 Alisma ranunculoides. 

 Typha latifolia. 

 Sparganium natans. 

 Potamogeton gramineus. 

 Milium effusum. 

 Catabrosa aquatica. 

 Brim media. 



Ceterach officinarum, 

 Polypodium Phegoi^teris. 

 Aspidium Oreopteris. 

 Asplenium marinum. 

 Hymenophyllum Wilsoni. 



Tunbridgense. 



Osmunda regalis. 

 Botrychium Lunaria. 

 Lycopodium selaginoides. 

 Isoetes lacustris. 



in. — A New Sj^ecies of Sulcoretejjora. By Dr Young and 

 Mr John Young, F.G.S. With a Plate. 



Stilcoretepora Eobertsoni, Y. & Y. 



Polyzoary erect, cylindrical, branching dichotomously ; branches 

 J to J of an inch apart, nearly circular in section ; diameter about 

 ^ a line, the greater thickness at the points of bifurcation ; the 

 angle of divergence about 45°. Cells oval, dej^ressed, usually 

 arranged round the stems in 8 to 10 parallel rows, each row 

 containing 18 cells in J of an inch, the cells being about their own 

 length apart. Irregular tuberculated ridges sej^arate the rows of 

 cells, giving the stem and branches an angular cross section. 



