. Plant life and plant uses; an elementary textbook, a foundation for the study of agriculture, domestic science or college botany. Botany. 280 FLOWERS ered together in determining the relationships of a plant. The flowers, however, are the most important and con- venient means of identification. B. The Simplest Flowers. — We can understand the various kinds of flowers best by considering first the simplest kinds. The more complex kinds have evolved from simple kinds, from ancestral kinds which were much like the simple kinds which exist to- day. The simplest flowers have no perianth, and Fig.
. Plant life and plant uses; an elementary textbook, a foundation for the study of agriculture, domestic science or college botany. Botany. 280 FLOWERS ered together in determining the relationships of a plant. The flowers, however, are the most important and con- venient means of identification. B. The Simplest Flowers. — We can understand the various kinds of flowers best by considering first the simplest kinds. The more complex kinds have evolved from simple kinds, from ancestral kinds which were much like the simple kinds which exist to- day. The simplest flowers have no perianth, and Fig. ioo5. — Flowers of the white ash (Fmxinus they are COm- Americana). A common and valuable tree whose d f essential flowers appear in early spring. Ihey are very simple r and are of two kinds, nearly always borne on different parts Only. The plants, diclinous and dioecious. The picture <-wf) kirirls of PS- shows the end of a pistillate twig above and the end of a staminate one below. Of the two smaller pic- Sential parts are, tures, the one at the left is a staminate flower, the one ^g VOU knOW Sta- at the right a pistillate one. . mens and carpels. The simplest flowers of all are those which have only one kind of essential part. In other words, the simplest flowers of all are borne by plants which have two kinds of flowers; one kind is composed only of stamens, the other kind only of carpels. In some cases, as in the duckweeds, a single stamen or a single carpel is all that there is to the 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 Coulter, John G. (John Gaylord), b. 1876. New York, American Book Co
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectbotany, bookyear1913
