Noy. 1906. ] BOTANICAL SOCIETY OF EDINBURGH. 235 
up of the surface, so that these clumps stood conspicuously 
above the general level of the vegetation. 
I broke up one or two of the larger stumps and found 
the component parts throughout; if the Pteris and Arundo 
are subsequent members of the mass, they must become so 
at an early stage. In some cases the Pleris seemed to pre- 
dominate, though usually the Carez is the chief component. 
The commoner accessory plants were noted :—Rubus sp., 
Solanum nigrum, Digitalis purpurea, Apium nodiflorum, 
Oenanthe crocata, Carduus palustris, Myosotis repens, Osmunda 
regalis, and Lastrea dilatata, 
The accompanying figure serves to illustrate the formation. 
Plate I. fig. 1. 
Mr. D.S. Fish exhibited photographs of various pendulous 
trees ; a variegated form of Vaccinium Vitis-Idea and Senecio 
albescens, Burbidge and Colgan (S. Cineraria, DC., x WS. 
Jacobea, Linn.). 
Mr. JAMES GRIEVE showed Cypripedium insigne vay. 
Sanderi in fine flower. 
R. Stewart MacDouGat.t, M.A., D.Sc., showed specimens 
of Tetranychus tiliarum. This species infests lime trees. 
The web—a specimen of which was shown—is sometimes 
found forming a glaze over the stem. The specimen shown 
was over a foot long, and was found hanging from a branch. 
Inside the web were thousands of the mites. Tetranychus is 
a genus of which perhaps the best known species is the Red 
Spider of greenhouses and other plants. 
Mr. k. L. Harrow showed the following plants in flower 
from the Royal Botanic Garden :—Ayathwa celestis, Begonia 
prismatocarpa, Exacum zeylanicum var. macranthum, Leptosyne 
gigantea, Crowea latifolia var. major, Nicandra violacea, Habe- 
naria carnea, Gonyora armeniaca, Phalenopsis Esmeralda, 
Pleurothallis rubens, Pleurothallis Grobyi, Celogyne Lagenaria. 
Mr. W. B. Boyp exhibited branches of Sequoia gigantea 
in good fruit. 
W. CALDWELL CRAWFORD, M.A., showed a fungus, Plewrotus 
decorus, found by Mr. Grant of Drumnadrochit—a new record 
for Great Britain. 
