. Botany, an elementary text for schools. Botany. 198. Improvised stand for lens. stamens nor pistils : these are sterile (snowball and hj^- drangea). Those which have both stamens and pistils are perfect, whether or not the envelopes are missing. Those which lack either sta- mens or pistils are imperfect or diclinous. Staminate and pistillate flowers are im- perfect or diclinous. 258. Flowers in which the parts of each series are alike are said to be regular (as in Figs. 187, 188, 189). Those in which some parts are unlike other parts of the same series are irregular. The irregularity' may be
. Botany, an elementary text for schools. Botany. 198. Improvised stand for lens. stamens nor pistils : these are sterile (snowball and hj^- drangea). Those which have both stamens and pistils are perfect, whether or not the envelopes are missing. Those which lack either sta- mens or pistils are imperfect or diclinous. Staminate and pistillate flowers are im- perfect or diclinous. 258. Flowers in which the parts of each series are alike are said to be regular (as in Figs. 187, 188, 189). Those in which some parts are unlike other parts of the same series are irregular. The irregularity' may be ill calyx, as in nasturtium (Fig. 195); in corolla ^ (Fig. 196, 197); in the stamens (com- pare nasturtium, catnip Fig. 197, sage); in the pistils. Irregularity is most fre- quent in the corolla. Review. —What is the flower for? What are the two general kinds of oigans in the flower? What is the homol- ogy of the flower-parts ? What are floral envelopes ? Calyx ? Sepals ? Calyx- lobes ? Corolla ? Petals ? Corolla-lobes ? Gamosepal- lous flowers ? Gamopetalous ? Poly- sepalous? Polypetalous? Define torus. What are the essential organs? Sta- men? Filament? Anther? Pollen? Pistil? Style? Stigma? Ovary? Car- pel ? Define a complete flower. In what ways may flowers be incomplete? Explain perfect and imperfect (or diclinous) flowers. Define regular flowers. In what ways may flowers be irregular? Note. — One needs a lens for the examination of the flower. It is best to have the lens mounted on a frame, so that the pupil has both hands free for pulling the in pieces. An ordinary pocket 19!) Dissect ingi /4 niitura size. ,\h. 200. Dissecting 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 Bailey, L. H. (Liberty Hyde), 1858-1954. New York Macmillan
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