322 LYCOPODIACEOUS PLANTS FROM THE NORTH OF SCOTLAND. 
_ In the yellow sandstones of Great Britain and Ireland we have a 
species of Lycopod, and perhaps only one. Few plants have been the 
subject of so much observation or received so many names as this 
fossil. Edward Forbes first drew attention to it in 1852, when he 
dj 
» The flora of the lower Devonian rocks is very litt] known. The 
different Continental authors have distinguished seven species, all of 
which have been referred to Alge 
1852. Haliserites Dechenianus, Gépp., Flora  Transitionis,. 
8 
. 88, pl. 2. 
aera acicularis, Gépp., l.c., p. 80, pl. 41, f. 3. 
Spheerococcites lichenoides, Gépp., l.c., p. 91., pl. 41, f. 2. 
Drepanophycus spineformis, Gipp., l.c., p. 92, pl. 41, f,1, 
1854. Chondrites Andres, Roem., Meyer, Paleeont., vol. iii., p. 70; 
pa. 25,2. ¢ 
1855. Chondrites foliosus, Eichw., Leth. Ross., vol. i., p. 58, 
feat. a: 
Caulerpites pennatus, Kichw., Lc., p. 47, pl. 1, f. 1. 
roundish markings like those covering the surface of the Stigmarias of 
the Coal Measures. 
In his second great work on the Old Red Sandstone of Scotland— 
“The Asterolepis of Stromness,” 1849—Hugh Miller added con- 
siderably to our knowledge of the plants of these rocks, and fi 
several more perfect and instructi i 
nodule, and which Prof. McNab has r. cently described with greater 
recision, and named Paleopitys Milleri (r . 
vol. x., p. 312; Journ. Bot., vol. viii., t of more interest 
- In connection with our present subject are the accurate figures and 
descriptions of a plant from Orkney, which was also abundant in the 
