Abstract
In four-sepaled flowers ofClematis the sepal is supplied by three main traces. The basic pattern of the vascular supply to sepals is found inC. alpina var.ochotensis which invariably has six-bundled pedicels. It is as follows: the median traces to the first pair of opposite sepals, as well as all the lateral traces, arise directly from pedicel bundles, while those to the second pair are formed secondarily, after fusion and subsequent division of two adjacent pedicel bundles. As to the manner of origin of the median traces, the pattern is similar to that of the vascular supply to foliage leaves. This gives further evidence for the generally accepted view that the sepals ofClematis, like foliage leaves, are decussately arranged. In most other species such asC. apiifolia, C. stans, etc. the number of pedicel bundles tends to be reduced from six to four so as to coincide with that of the sepals, so patterns are much simplified and specialized: all the traces arise directly from pedicel bundles. InC. japonica an iconsistent pattern is observed, since the number of pedicel bundles from which sepal traces arise is much higher and varied.
Similar content being viewed by others
References
Brouland, M. 1935. Recherches sur l'anatomie florale des Renonculacées. Botaniste27: 1–252.
Carlquist, S. 1969. Toward acceptable evolutinary interpretations of floral anatomy. Phytomorphology19: 332–362.
Chute, M. 1930. The morphology and anatomy of the achene. Amer. J. Bot.17: 703–723.
Eames, A.J. 1931. The vascular anatomy of the flower, with refutation of the theory of carpel polymorphism. Amer. J. Bot.18: 147–188.
Eichler, A.W. 1875. Blütendiagramme, Wilhelm Engelmann, Leipzig. Reprint ed. in 195. Otto Koeltz, Eppenhain.
Fraser, M.S. 1937. A study of the vascular supply to the carpel in the follicle-bearing Ranunculaceae. Trans. R. Soc. Edinb.59: 1–56.
Goffart, J. 1900. Recherches sur l'anatomie des feuilles dans les Renonclucées. Arch. Inst. Bot. Liége3: 1–190.
Kuntze, O. 1885. Monographie der GattungClematis. Verh. Bot. Ver. Brandenb.26: 83–202.
Marié, P. 1885. Recherches sur la structure des Renonculacées. Ann. Sci. Nat.20: 5–180.
Melville, R. 1962. A new theory of the angiosperm flower: I. The gynoecium. Kew Bull.16: 1–50.
Schmid, R. 1972. Floral bundle fusion and vascular conservatism. Taxon21: 429–446.
Schöffel, K. 1932. Untersuchungen über den Blütenbau der Ranunculaceen. Planta17: 315–371.
Smith, G.H. 1926. Vascular anatomy of Ranalian flowers. I. Ranunculaceae. Bot. Gaz.82: 1–29.
Tamura, M. 1954. Notes onClematis of eastern Asia. II. Acta Phytotax. Geobot.15: 117–127.
— 1955. Systema Clematidis Asiae orientalis. Sci. Rep. Osaka Univ.4: 43–55.
— 1967. Morphology, ecology and phylogeny of the Ranunculaceae. VII. Sci. Rep. Osaka Univ.16: 21–43.
Tobe, H. 1976a. Morphological studies on the genusClematis Linn. II. Notes on the bract and floral axis in Section Paratragene. Sci. Rep. Tôhoku Univ., Ser. IV (Biol.)37: 95–103.
— 1976b. Morphological studies on the genusClematis Linn. III. Floral anatomy ofClematis tosaensis. Sci. Rep. Tôhoku Univ., Ser. IV (Biol.)37: 105–116.
— 1979. Morphological studies on the genusClematis Linn. IV. Vascular anatomy of the inflorescence axis, with some consideration of the evolution of the floral shoot with simple axillary inflorescences. Bot. Mag. Tokyo92: 197–215.
Trapl, S. 1912. Morphologische Studien über den Bau und das Ranunculaceenblüte. Beih. Bot. Zbl.28: 247–281.
Tucker, S.C. 1966. The gynoecial vascular supply inCaltha. Phytomorphology16: 339–342.
Wordell, C.W. 1908. A study of the vascular system in certain orders of the Ranales. Ann. Bot.22: 247–281.
Wydlar, H. 1872. Kleinere Beiträge zur Kenntnis einheimischer Gewächse (Fortsetzung). Mitth. naturf. Ges. Bern. 1871: 29.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Tobe, H. Morphological studies on the genusClematis linn. Bot Mag Tokyo 93, 39–54 (1980). https://doi.org/10.1007/BF02489485
Received:
Issue Date:
DOI: https://doi.org/10.1007/BF02489485