. Lessons with plants. Suggestions for seeing and interpreting some of the common forms of vegetation. re are three stamens with versatile anthers,h h h. There are two parts, c c, which might betaken for petals. The flower is, therefore, whollyunlike the rush in its plan, and suggests that thetwo plants are not close of kin. 260a. Similar structure can be made out for the flower of Junegrass in Fig. 218, which is a flower taken from the panicle inFig. 189. 261. If the flowers of grasses were examinedwith care, however, two or three minute scaleswould be found at the base of the ovary; these (k
. Lessons with plants. Suggestions for seeing and interpreting some of the common forms of vegetation. re are three stamens with versatile anthers,h h h. There are two parts, c c, which might betaken for petals. The flower is, therefore, whollyunlike the rush in its plan, and suggests that thetwo plants are not close of kin. 260a. Similar structure can be made out for the flower of Junegrass in Fig. 218, which is a flower taken from the panicle inFig. 189. 261. If the flowers of grasses were examinedwith care, however, two or three minute scaleswould be found at the base of the ovary; these (known as lodicules)are held to represent the two petal-like bodies, then,must be reinforcements of the flower,and they are now considered to bespecialized bracts (or glumes). Theouter bract (seen on the right inthe picture of rye and on the left Pro 218 in Fig. 218) is called the flower- Reinforced flower of ing-glume, and the inner and smaller the palet. They were formerlycalled the outer and inner —or lower and upper—palets. These are characteristic features of the. 228 ZHSSOJVS WITH PLANTS grass flower, and the rush, which, to casual obser-vers is a grass, really belongs to another family. 262. In Obs. xxx. we became acquainted withthe pistillate spike of Indian corn (Fig. 167), andthe pupil was asked to find the stam-inate flowers. Some of these stami-nate flowers are shown enlarged inFig. 219. It will beseen that there aretwo flowers in the littlecluster, each compris-ing three stamens, andthe flowering glumesare at 1, 1, and thepalets at 2, 2. Theflower at the right isnot yet in bloom. In otherwords, Fig. 219 shows a flower-cluster, or a part of is called a spikelet, a termapplied, in the grasses, to theclosely associated flowers upon the ultimate branchesof the cluster. The pupil will at once catchthe resemblance of these flowers to those of therye and June-grass, and will be prepared to betold that Indian corn belongs to the grass
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Keywords: ., bookauthorbai, bookcentury1900, bookdecade1900, booksubjectbotany
