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Sympodial branching Black & White Stock Photos

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Sympodial branching Black & White Stock Photos

. A manual of botany. Botany. GENEBAL MORPHOLOGY OP THE PLANT 33 of lateral branching in which we have a continuous axis giving off lateral branches; but it differs in the fact that here the apparent primary axis consists of a succession of secondary axes. In sympodial branching, again, the sympodium may be either formed of the fork-branches of the same side (left or right) of successive dichotomies [fig- 43, A, I, I, I) ; or it may consist alternately of the left and right fork-branches or bifurcations {fig. 43, B, /, r, 7, r). In the former case it is called helicoid diclioiomy ; in the latt Stock Photo
RMRE1MG9–. A manual of botany. Botany. GENEBAL MORPHOLOGY OP THE PLANT 33 of lateral branching in which we have a continuous axis giving off lateral branches; but it differs in the fact that here the apparent primary axis consists of a succession of secondary axes. In sympodial branching, again, the sympodium may be either formed of the fork-branches of the same side (left or right) of successive dichotomies [fig- 43, A, I, I, I) ; or it may consist alternately of the left and right fork-branches or bifurcations {fig. 43, B, /, r, 7, r). In the former case it is called helicoid diclioiomy ; in the latt
. Plant life, considered with special references to form and function. Plant physiology. THE LEA VES. 12S 145). More profound branching is evident in divided or parted leaves (fig. 146). In some blades the branching is so extensive and complete. B Fig. 145. Fig. 146. Fig. 145.âDiagrams of slight leaf branching. A, leaf with crenate edge ; /.', leaf ^^th dentate edge ; C, leaf witli serrate edge.âAfter Bessey. Fig. 146.âLeaf of A lUOT/'hopkalhiS, â iWiw'Wi^ sympodial branching. The successi'e lateral axes are numbered in order. Tlte e.xtent of branching makes the blade diided. Reduced.âAfter Stock Photo
RMRDYA7A–. Plant life, considered with special references to form and function. Plant physiology. THE LEA VES. 12S 145). More profound branching is evident in divided or parted leaves (fig. 146). In some blades the branching is so extensive and complete. B Fig. 145. Fig. 146. Fig. 145.âDiagrams of slight leaf branching. A, leaf with crenate edge ; /.', leaf ^^th dentate edge ; C, leaf witli serrate edge.âAfter Bessey. Fig. 146.âLeaf of A lUOT/'hopkalhiS, â iWiw'Wi^ sympodial branching. The successi'e lateral axes are numbered in order. Tlte e.xtent of branching makes the blade diided. Reduced.âAfter
. Outlines of plant life : with special reference to form and function . Botany. 104 OUTLINES OF PLANT LIFE. intervals between the larger ribs, but the blade is made up of a series of independent portions united to a common stalk. Each ultimate branch of the blade is known as a leaflet. Blades in which the green tissue is continuous, even • though deeply divided, are. B Fig. g6. Fig. 97. Fig. g6.—Diagrams ot slight leaf branching. .<4, leaf with crenate edge; 5, leaf with dentate edge; C, leaf with serrate edge. —After Bessey. Fig. 97—Leaf of Amorpko/i/iallus, s^xovrmg sympodial branching. Stock Photo
RMRDHPJ1–. Outlines of plant life : with special reference to form and function . Botany. 104 OUTLINES OF PLANT LIFE. intervals between the larger ribs, but the blade is made up of a series of independent portions united to a common stalk. Each ultimate branch of the blade is known as a leaflet. Blades in which the green tissue is continuous, even • though deeply divided, are. B Fig. g6. Fig. 97. Fig. g6.—Diagrams ot slight leaf branching. .<4, leaf with crenate edge; 5, leaf with dentate edge; C, leaf with serrate edge. —After Bessey. Fig. 97—Leaf of Amorpko/i/iallus, s^xovrmg sympodial branching.
. Text-book of botany, morphological and physiological. Botany. 6zz PHANEROGAMS. produces only one or a pair of opposite lateral shoots, and the branching is therefore distinctly cymose, sympodial, or, as in Lemna trisulca, dichasial. Besides the formation of shoots by the branching of the axis, adventitious shoots also sometimes occur on leaves which perform the function of gemmae ; as for instance on the margins of the leaves of Hyacinthus Pouzolsii and some Orchids (Doll, Flora, p. 348)1. The large gemmae which appear very regularly at the point of junction of the leaf-stalk and lamina, and Stock Photo
RMRPXFRJ–. Text-book of botany, morphological and physiological. Botany. 6zz PHANEROGAMS. produces only one or a pair of opposite lateral shoots, and the branching is therefore distinctly cymose, sympodial, or, as in Lemna trisulca, dichasial. Besides the formation of shoots by the branching of the axis, adventitious shoots also sometimes occur on leaves which perform the function of gemmae ; as for instance on the margins of the leaves of Hyacinthus Pouzolsii and some Orchids (Doll, Flora, p. 348)1. The large gemmae which appear very regularly at the point of junction of the leaf-stalk and lamina, and
. Outlines of plant life : with special reference to form and function . Botany. 74 OUTLINES OF PLANT LIFE. buds, the plant will have a central axis, from the sides of which distinctly smaller branches arise. If, however, the lateral buds are almost or quite as strong as the central one, the plant seems to be broken up into branches, and, after it has attained its mature form, no one can be pointed out as the main axis.* Such branching is monopodial (see ^ 58). These two types of monopodial branch- ing and the sympodial type are all illus- trated in the forms attained by common forest trees. ( Stock Photo
RMRDJ2M6–. Outlines of plant life : with special reference to form and function . Botany. 74 OUTLINES OF PLANT LIFE. buds, the plant will have a central axis, from the sides of which distinctly smaller branches arise. If, however, the lateral buds are almost or quite as strong as the central one, the plant seems to be broken up into branches, and, after it has attained its mature form, no one can be pointed out as the main axis.* Such branching is monopodial (see ^ 58). These two types of monopodial branch- ing and the sympodial type are all illus- trated in the forms attained by common forest trees. (
. A manual of botany. Botany. Fig. 42. Diagram of normal or tme dichotomoiis branching, showing the two branches equally developed in a forked manner, and each branch di- viding in succession in a similar way. Fig. 43. Diagrams of sympodial dichotomous branching. A. Helicoid dichotomy. B. Scorpioid dichotomy. In A, the left-hand branches, ?, ?, I. of successive dichotomies are much more developed than the right, r, r, r, r. In B, the left-hand branches, ?, 7, and those of the right hand, ?-, r, are alternately more vigo- rous in their growth. The limbs of the dichotomy which become the success Stock Photo
RMRE1MGJ–. A manual of botany. Botany. Fig. 42. Diagram of normal or tme dichotomoiis branching, showing the two branches equally developed in a forked manner, and each branch di- viding in succession in a similar way. Fig. 43. Diagrams of sympodial dichotomous branching. A. Helicoid dichotomy. B. Scorpioid dichotomy. In A, the left-hand branches, ?, ?, I. of successive dichotomies are much more developed than the right, r, r, r, r. In B, the left-hand branches, ?, 7, and those of the right hand, ?-, r, are alternately more vigo- rous in their growth. The limbs of the dichotomy which become the success
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