. Diversions of a naturalist. Natural history. 326 DIVERSIONS OF A NATURALIST inches long and half that in breadth. In all the species of Pinus the outer end of the scales which build up the cone is swollen and squeezed compactly by its fellows, forming a hard shield-like surface of a lozenge shape, in the middle of which is a knob or process (see Figs. 3 i, 39, and 40). Usually this is short and not very sharp, but in Pinus muricata the cone is very hard and solid and the. Fig. 41.âFemale Cone of Pinus muricata, showing the long sharp spines which stand up from the boss or umbo in the centre
. Diversions of a naturalist. Natural history. 326 DIVERSIONS OF A NATURALIST inches long and half that in breadth. In all the species of Pinus the outer end of the scales which build up the cone is swollen and squeezed compactly by its fellows, forming a hard shield-like surface of a lozenge shape, in the middle of which is a knob or process (see Figs. 3 i, 39, and 40). Usually this is short and not very sharp, but in Pinus muricata the cone is very hard and solid and the. Fig. 41.âFemale Cone of Pinus muricata, showing the long sharp spines which stand up from the boss or umbo in the centre of the swollen, woody, lozenge-shaped end or '' apex â ' of each seed-scale. Compare these with the un-armed bosses in the centre of each lozenge building up the surface of the cones drawn in Figs. 31, 39, and 40. knob is elongated into a spine of nearly one-third of an inch long (Fig. 41). Theses pines are so hard and sharp that they render it impossible to grasp the cone with the hand in order to pluck it. The cones remain on the tree for fifteen years or more, and may be seen in close-set clusters sur- rounding quite old branches. The cones of Pinus rigidaâ one of the American pitch-pinesâare similarly protected by spines. Pinus rigida is easily distinguished by its. 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 Lankester, E. Ray (Edwin Ray), Sir, 1847-1929. London Methuen
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Keywords: ., bookauthorlankestereray, booksubjectnaturalhistory, bookyear1915
