This group of stems has been separated by writers on fossil botany into several genera, as Bothrodendron, Ulodendron, &c.[21] In some of these the scars are five inches in diameter.

[21] See Dr. Buckland's Bridgewater Essay, plate 56.

There are many fine examples of these fossils in the British Museum.

Plate XXVI.

PLATE XXVI.

"Lepidodendron, or Scaly-tree."