On medullosa pusilla

In the second edition of my ‘Studies in Fossil Botany,ʼ I referred in the following words to the fossil plant which forms the subject of this notice. “A very smallMedullosa (named provisionallyMedullosa pusilla ), the stem with the leaf-bases not exceeding 2 cm. in diameter, has since been found by Mr. P. Whalley, of Colne, Lancashire. The stem has three steles, and agrees very closely withM .anglica , except in size.”* In order to clear the ground for other observers, it now seems desirable to give some further account of this fossil, with the necessary illustrations. Though the plant differs in no important respect from the now well-known speciesM .anglica , it is of some interest, as probably the smallestMedullosa on record.