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I see that river, with its trees and shrubs, all unknown now except in museums the vegetation of the Coal Period the lepidodendron, the lepidostrobus, the pecopteris, the neuropteris, the lonchopteris, the odontopteris, the sphenopteris, the cyclopteris, the sigellaria veniformis, the sphenophyllium, the calamites " Melick started to his feet. "There, there!" he cried, "hold hard, doctor.
The opinion of M. Brongniart that the Lepidostrobus is the fruit of Lepidodendron has been confirmed, for these strobili or fruits have been found terminating the tip of a branch of a well-characterised Lepidodendron in Coalbrook Dale and elsewhere. Calamites Sucowii, Brong.; natural size. Radical termination of a Calamite.
This minuteness of the seed-germs goes to explain the reason why, as Sir Charles Lyell remarked, the same species of lepidodendra are so widely distributed in the coal measures of Europe and America, their spores being capable of an easy transportation by the wind. Lepidostrobus.
Fragments of others, found in the same shale, indicate, by the size of the rhomboidal scars which cover them, a still greater magnitude. The living club-mosses, of which there are about 200 species, are most abundant in tropical climates. Lepidostrobus ornatus, Brong. Shropshire. a.
Portion of a section, showing the large sporangia in their natural position, and each supported by its bract or scale. c. Spores in these sporangia, highly magnified. In the Carboniferous strata of Coalbrook Dale, and in many other coal-fields, elongated cylindrical bodies, called fossil cones, named Lepidostrobus by M. Adolphe Brongniart, are met with.
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