Notes. 187 
the familiar example of Stangeria teaches, is as consistent with 
Cycadaceous or with Filicinean affinities. 
When Medullosa thus combines, in a striking manner, the characters 
of Ferns and Cycads, the author is not disposed to regard it as having 
lain very near the direct line of descent of the latter group. It is more 
probable, as Count Solms-Laubach has suggested, that the Medulloseae 
represent a divergent branch, which has left no descendants among 
existing vegetation. 
Medullosa anglica , sp. nov. 
Stem vertical, clothed by large, spirally arranged, decurrent leaf- 
bases, perhaps cast off in old stems. External surface of leaf-bases 
longitudinally striate. 
Vascular system of stem consisting of a few (usually three) uniform 
steles, somewhat elongated and lobed as seen in transverse section. 
Star-rings absent. Interior of each stele wholly occupied by primary 
wood. 
Secondary wood and bast of moderate thickness, developed on all 
sides of the steles. Tracheides usually with bordered pits. 
Leaf-traces concentric on leaving the steles, branching and becoming 
collateral in traversing the cortex. 
Leaf-bases and petioles with the structure of Myeloxylon Landriotii , 
Ren. 
Leaves highly compound. 
Gum-canals abundant in the petioles and leaf-bases, and in the 
cortex, and around the steles of the stem. 
Adventitious roots borne in vertical series, triarch, with secondary 
wood and bast, and periderm. 
Stem with leaf-bases, about 7-8 cm. in mean diameter. 
Petioles about 2-5-4 cm. in diameter at base, diminishing to about 
1 mm. in the ultimate branches of the rachis. 
Leaflets about 3 mm. wide. 
Roots reaching 12 mm. in diameter. 
Locality : Hough Hill Colliery, Stalybridge, Lancashire. 
Horizon : Lower Coal-measures. 
Found by Messrs. G. Wild and J. Lomax, 1892-98. 
NEW 3PUGUS HYBRIDS. — Thuret, in the Etudes Phycologiques, 
describes his attempts to produce crosses between various members of 
