. Our ferns in their haunts; a guide to all the native species. Ferns. THE CLIFF BRAKES. HE bracken is now considered to be the sole representative of its genus in northeastern America. Time was, however, when other species were classed with it, but owing to some slight differences in the manner of fruiting, these latter are now placed in the genus PellcBa. Superficially examined, the fruiting seems to be identical, but there is this difference: in Pteris the sporangia are borne on a continuous receptacle connect- ing the ends of the veins, on the margin of the pinnules; in Pellcsa the sporang
. Our ferns in their haunts; a guide to all the native species. Ferns. THE CLIFF BRAKES. HE bracken is now considered to be the sole representative of its genus in northeastern America. Time was, however, when other species were classed with it, but owing to some slight differences in the manner of fruiting, these latter are now placed in the genus PellcBa. Superficially examined, the fruiting seems to be identical, but there is this difference: in Pteris the sporangia are borne on a continuous receptacle connect- ing the ends of the veins, on the margin of the pinnules; in Pellcsa the sporangia are borne in dot- like masses at the ends of free veins, inside the margins. The indusia are similar and when the spore-cases of Pellcea are ripe, they frequently appear to form a continuous line, as in Pteris. WINTER BRAKE. Pellaa Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Clute, Willard Nelson, b. 1869. New York, F. A. Stokes Co
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Keywords: ., bookcentury1900, bookdecade1900, bookpublishernewyo, bookyear1901
