322 GUERNSEY. 
Pediastrum Boryanum, Turp. 
Saints Bay Valley, abundant. Pool by Fort Doyle 
Coelastrum sphaericum, Nag. ' 
Grande Mare, in some of the ditches. 
Characium ornithocephalum, Br. 
Saints Bay Valley, attached to filamentous algae. 
Zygnema cruciatum, Ag. 
Grande Mare. 
Zygnema anomalum, Hass. 
Grande Mare. The Zyvadaridea anoma/la of Ralfs. See remarks 
on this species in Cooke’s Brit. Hr. W. Alg., i. p. 81. 
Spirogyra bellis, Cleve. 
Grande Mare. The plant described by Petit, Spirogyra des 
environs de Paris, p 31. 
Spirogyra porticalis, Cleve. 
Roadside ditch near Vazon, and in pools at Grande Mare. 
Mesocarpus nummuloides, Hass. 
Grande Mare, in good fruit in some gatherings. 
Vaucheria sessilis, DC. 
Moulin Huet Valley, in a well, fruiting 
Conferva bombycina Ag. 
Streamside, Moulin Huet. 
Cladophora glomerata, Linn. 
In streamlets near Ivy Castle-and near Hougue du Pommier. 
Bulbochaete setigera, Ag. 
On submerged reed-stems in deep pools at Grande Mare. 
Bulbochaete pygmaea, Wittr. 
Grande Mare. A very minute species. 
Ulothrix radicans, Kutz. 
Base of walls and damp ground. 
Chroolepus aureus, Linn. 
Common on old walls and tree-trunks. Conspicuous by its 
bright orange-red colour 
Stigeoclonium tenue, Ag. ‘ 
Moulin Huet Cascade. Stream behind Ivy Castle, on stones 
Chaetophora tuberculosa, Ag. 
Plentiful in a water-trough towards the Corbiere. 
