The Permian or Upper Carboniferous Flora of West Virginia and S. W. Pennsylvania (Volume 48) (Paperback)

This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1880. Excerpt: ... evidently not very solid or woody in texture, for it left only a flat leaf-like scale on the shale.) Habitat.--Roof-shales of the Waynesburg Coal, Cassville, W. Va. Guilielmites, Geinitz. Guilielmites orbicularis. Sp. nov., PI. XXXVII, Fig. 2. Fig. 2, PI. XXXVII, represents an impression of a form which we find in considerable numbers at Cassville. It agrees so well with the fruit styled Guilielmites by Geinitz, that we place it in that genus. The point of attachment sometimes shows imperfect marks of a stem, and is shown by the place from which the lines radiate. It is in nearly all the specimens excentrically placed, and the woody lines, resembling coarse veins, which radiate from it, fork frequently, in an irregular manner, as they pass to the margin. It is without doubt a vegetable impression, since it leaves a film of coal on the shale which is sharply defined, and cannot possibly be caused by any compression of the shale, as Carruthers thinks is the case with Geinitz's forms. Geinitz thought that this fruit was allied to the Palms, while Schimper considered them to represent the Cycas. We have no data that can decide this question. The forms are all orbicular in outline, but vary considerably in size, that drawn being of average size. Some are considerably larger. Habitat.--Roof-shales of the Waynesburg Coal, Cassville, West Virginia. CONIFERS. Saportjea, gen. nov. Leaves simple, subreniform-flabellate, or suborbicularcuneate in outline, bordered at the base with a woody rim, which is apparently an extension of the leaf-stalk; terminal margin of the leaves, incised more or less deeply; petiole long, slender and grooved on the upper surface; nerves departing tlabellately from the summit of the petiole and from the woody basal rim throughout its lengt...