. A manual of botany. Botany. Fig. 388. Pollen of the Passion-flower (FassiJIora), before bursting, o, o, o. Liil-like processes. Fig. 389. Pollen of the Gourd, at the period of bur-;tinff. o, o. Lid-like processes of the extine protruded by the projec- tions, ^ ', of the intine. From Jnssieu. F/g. 390. Trigonal pollen of the Evening Primrose ((Eaothera biennis). or reticulations (fig. 388). The nature of these markings is always the same for the pollen of any particular species or variety of plant, but varies much in that of different plants. The extine is often covered by a viscid or oily se
. A manual of botany. Botany. Fig. 388. Pollen of the Passion-flower (FassiJIora), before bursting, o, o, o. Liil-like processes. Fig. 389. Pollen of the Gourd, at the period of bur-;tinff. o, o. Lid-like processes of the extine protruded by the projec- tions, ^ ', of the intine. From Jnssieu. F/g. 390. Trigonal pollen of the Evening Primrose ((Eaothera biennis). or reticulations (fig. 388). The nature of these markings is always the same for the pollen of any particular species or variety of plant, but varies much in that of different plants. The extine is often covered by a viscid or oily secretion. The colour of pollen-grains also resides in the extine. In by far the majority of cases they are yellow, but various other colours are also occasionally found ;,thuB they are red in species of Verhascum,. 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 Green, J. Reynolds (Joseph Reynolds), 1848-1914. London, J. & A. Churchill
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