. Studies in fossil botany . Paleobotany. PALAEOSTACHYA 65 of one kind, and of similar dimensions to those of Calamostachys Binneyana. The apparently axillary position of the sporangio- phores in Palaeostachya evidently suggests caution in. Fig. 26.—Palaeostachyavera. Transverse section of cone. Surrounding the fistular pith is the ring of bundles (v£>) grouped in pairs. Outside them is the cortex and disc (c). sp, pedicels of the sporangiophores, some shown attached to the axis, others between the sporangia (sm)} which are grouped in fours around the sporangiophores; sp', remains of peltat
. Studies in fossil botany . Paleobotany. PALAEOSTACHYA 65 of one kind, and of similar dimensions to those of Calamostachys Binneyana. The apparently axillary position of the sporangio- phores in Palaeostachya evidently suggests caution in. Fig. 26.—Palaeostachyavera. Transverse section of cone. Surrounding the fistular pith is the ring of bundles (v£>) grouped in pairs. Outside them is the cortex and disc (c). sp, pedicels of the sporangiophores, some shown attached to the axis, others between the sporangia (sm)} which are grouped in fours around the sporangiophores; sp', remains of peltate lamina of a sporangiophore ; br, bracts. X about 7. S. Coll. 474. (G. T. G.) accepting the current view that these organs in Equisetineae are simply leaves. Mr. Hickling's obser- vations have cleared up, for the first time, the course of the vascular strands which supply the sporangiophores. He finds that they start from the same node as the 5. 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 Scott, Dukinfield Henry, 1854-1934. London, A. and C. Black
Size: 1654px × 1510px
Photo credit: © The Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1900, bookpublisherlondonaandcblack
