familyLeitneriaceae
Show Lower Taxa
Difference between revisions of "Leitneriaceae"
Common names: Corkwood Family
Treatment appears in FNA Volume 3. Treatment on page 414.
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| − | --><span class="statement" id="st- | + | --><span class="statement" id="st-undefined" data-properties=""><b>Shrubs </b>or small trees. <b>Wood</b> white to yellowish, soft, brittle, even-grained; secretory canals in outer pith; resin yellowish. <b>Leaves</b> alternate, not aromatic; stipules absent; petiole and veins with secretory canals. <b>Inflorescences</b> axillary catkins, erect or lax. <b>Flowers</b> unisexual, staminate and pistillate on different (rarely on same) plants, inconspicuous, sessile; perianth absent or of small, undifferentiated sepals, hypogynous; pistils simple (rarely compound), 1(-2)-carpellate; ovary superior; placentation parietal; ovule 1, pendulous; style 1. <b>Fruits</b> drupes, leathery, dry.</span><!-- |
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| − | |distribution=se United States | + | |distribution=se United States. |
|discussion=<p>Genus 1, species 1.</p><!-- | |discussion=<p>Genus 1, species 1.</p><!-- | ||
--><p>Leitneriaceae are a relict family confined to the flora area and occurring on coastal and riverine flood plains of the Atlantic and Gulf coasts. The fossil record of the family extends to the Middle Oligocene (32-30 M.Y.B.P.).</p><!-- | --><p>Leitneriaceae are a relict family confined to the flora area and occurring on coastal and riverine flood plains of the Atlantic and Gulf coasts. The fossil record of the family extends to the Middle Oligocene (32-30 M.Y.B.P.).</p><!-- | ||
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|family=Leitneriaceae | |family=Leitneriaceae | ||
|illustrator=John Myers | |illustrator=John Myers | ||
| − | |distribution=se United States | + | |distribution=se United States. |
|reference=abbe1940a;channell1962a;giannasi1986a;jarvis1989a;petersen1983b | |reference=abbe1940a;channell1962a;giannasi1986a;jarvis1989a;petersen1983b | ||
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Revision as of 13:43, 27 July 2019
Shrubs or small trees. Wood white to yellowish, soft, brittle, even-grained; secretory canals in outer pith; resin yellowish. Leaves alternate, not aromatic; stipules absent; petiole and veins with secretory canals. Inflorescences axillary catkins, erect or lax. Flowers unisexual, staminate and pistillate on different (rarely on same) plants, inconspicuous, sessile; perianth absent or of small, undifferentiated sepals, hypogynous; pistils simple (rarely compound), 1(-2)-carpellate; ovary superior; placentation parietal; ovule 1, pendulous; style 1. Fruits drupes, leathery, dry.
Distribution
se United States.
Discussion
Genus 1, species 1.
Leitneriaceae are a relict family confined to the flora area and occurring on coastal and riverine flood plains of the Atlantic and Gulf coasts. The fossil record of the family extends to the Middle Oligocene (32-30 M.Y.B.P.).
Taxonomic affinities are uncertain. Various alliances have been suggested: Hamamelidales (A. Cronquist 1981), Sapindales (R. M. T. Dahlgren 1980), and Rutales (R. F. Thorne 1983) of the Rutiflorae. Biochemical studies (D. E. Giannasi 1986; F. P. Petersen and D. E. Fairbrothers 1983, 1985) suggest affinities with Simaroubaceae in Rutales.
Selected References
Lower Taxa
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