On the structure of the palæozoic seed, Lagenostoma Lomaxi , with a statement of the evidence upon which it is referred to Lyginodendron .

Abstract

The present communication deals with the structure of Lagenostoma Lomaxi , a fossil seed from the lower coal-measures, and with the evidence upon which the authors refer it to the well-known carboniferous plant, Lyginodendron . It is found that this species of Lagenostoma , especially in its young form, was inclosed in a husk or cupule, borne on a short pedicel. The seed, which is of Cycadean character, is fully described, and its relation to other fossil and recent seeds discussed.