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Circaeasteraceae

  • Wu Cheng-Yih
  • K. Kubitzki
Chapter
Part of the The Families and Genera of Vascular Plants book series (FAMILIES GENERA, volume 2)

Abstract

Annual herb with an elongated hypocotyl and a terminal leaf rosette; cotyledons persistent. Leaves petiolate, exstipulate, subdecussate; leaf blades spatulate or rhomboid, with an open dichotomous venation, the veins ending in teeth of the blade. Inflorescences terminal, composed of fascicles of lowers, each fascicle save the terminal one subtended by a bract but otherwise devoid of bracts and bracteoles; flowers minute, perfect, regular, apetalous, numbers of organs variable; tepals 2–3, scale-like, supplied by an unbranched strand; stamens (1−)2(−3); anthers with one pair of introrse pollen sacs; gynoecium apocarpous, carpels (1−)2(−3), fusiform, with a terminal papillate stigma; ovule orthotropous, subapical, pendulous, unitegmic and tenuinucellar. Achene covered by uncinate hairs; seed with copious endosperm, testa lacking and substituted by a suberized layer of the endosperm. 2n = 30.

Keywords

Pollen Tube Pollen Morphology Annual Herb Leaf Venation Dorsal Bundle 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Selected Bibliography

  1. Foster, A.S. 1963. The morphology and relationships of Circaeaster. J. Arnold Arbor. 44: 299–321.Google Scholar
  2. Harms, H. 1897. Circaeaster Maxim. In: Engler, A. Prantl, K. (Eds.) Die natürlichen Pflanzenfamilien, Nachtrag und Register zu Teil II–IV. Leipzig: W. Engelmann, pp. 332–333.Google Scholar
  3. Junell, S. 1931. Die Entwicklungsgeschichte von Circaeaster agrestis. Sven. Bot. Tidskr. 25: 238–270.Google Scholar
  4. Nowicke, J.W., Skvarla, J.J. 1982. Pollen morphology and the relationships of Circaeaster, of Kingdonia, and of Sargentodoxa to the Ranunculales. Amer. J. Bot. 69: 990–998.CrossRefGoogle Scholar
  5. Oliver, D. 1895. Circaeaster agrestis Maxim. Hooker’s Icones Plantarum IV, 4: pl.2366.Google Scholar
  6. Schulze, H. 1900. Beiträge zur Anatomie des Blattes bei den Chloranthaceen. Beih. Bot. Centralbl. 9: 81–85.Google Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 1993

Authors and Affiliations

  • Wu Cheng-Yih
  • K. Kubitzki

There are no affiliations available

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