. Class-book of botany : being outlines of the structure, physiology, and classification of plants ; with a flora of the United States and Canada . Botany; Botany; Botany. 90 THE PLAN OP THE FLOWER. 1. In the unequal sae of like organs (petals of mullein). 2. In their dissimilar/orm,? ov positions (petals of the pea). 3. In the unequal cohesion of like parts (petals of Lobelia). 4. In unequal suppressions (stamens of the Labiate flowers, where, indeed, as in many other flowers, all these phases of irregularity are combined).. 2S6. Flower (magnified) of Myosnrus; ft vertical section ehoTVlng it
. Class-book of botany : being outlines of the structure, physiology, and classification of plants ; with a flora of the United States and Canada . Botany; Botany; Botany. 90 THE PLAN OP THE FLOWER. 1. In the unequal sae of like organs (petals of mullein). 2. In their dissimilar/orm,? ov positions (petals of the pea). 3. In the unequal cohesion of like parts (petals of Lobelia). 4. In unequal suppressions (stamens of the Labiate flowers, where, indeed, as in many other flowers, all these phases of irregularity are combined).. 2S6. Flower (magnified) of Myosnrus; ft vertical section ehoTVlng its elongated receptacle, etc 2ST, Tile fiame, naturtil size. 23S, Flower of Isopyram biternatum; vertical'section, showing the convex or globular receptacle, etc. 2S9, Flower of rose, showing its excavated torus. 442. The rboular receptacle has no internodes. It bears the several whorls of the flower in close contact with each other, and is usually short and depressed. 443. Lengthened receptacle. When these whorls are numerous, as in buttercups, tulip-tree, the receptacle is necessarily elongated. So in Myosurus, blackberry, strawberry. In the two latter it imbibes the 290 nutritious juices of the plant and becomes a part of the fruit. 444. Excavated recepta- cle. On the contrary, the to- rus instead of lengthening may be hollowed out in the center. The carpels of the rose are sit^ Bated in such a cavity, while the other organs are borne upon its elevated rim. In Nelumbium the carpels are immersed in as many separate excavations in a large, fleshy receptacle. 445. But the internodes of the torus are sometimes developed, «. g., in noble liverwort a sliort inter- node between the corolla and calyx. 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 Wood, Alphonso, 1810-1881. New York : A. S. Barnes & Burr
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Keywords: ., bookcentury1800, bookdecade1860, bookpublisher, booksubjectbotany
