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Rhoeadales: Disbanded!

Rhoeadales: Disbanded!. REBECCA S. FRANKLIN Laboratory of Tree-Ring Research, Department of Geosciences, University of Arizona, Tucson, AZ, 85721 rebecca@ltrr.arizona.edu. Outline. Location of families in Rhoeadales in Engler (1936) v. Cronquist (1988) v. APG II (2003)

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Rhoeadales: Disbanded!

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  1. Rhoeadales:Disbanded! REBECCA S. FRANKLIN Laboratory of Tree-Ring Research, Department of Geosciences, University of Arizona, Tucson, AZ, 85721 rebecca@ltrr.arizona.edu

  2. Outline • Location of families in Rhoeadales in Engler (1936) v. Cronquist (1988) v. APG II (2003) • Description of families in Engler’s Rhoeadales, unifying characteristics. (many not covered in class) • Regrouping in Cronquist, APG II

  3. Engler & Diels 1936 • Division Embryophyta • Sub-division Angiospermae • Class Dicotyledonae • Order Rhoeadales • Families • Papaveraceae • Fumariaceae • Capparidaceae (Capparaceae) • Brassicaceae • Tovariaceae • Resedaceae • Moringaceae • Bretschneideraceae

  4. The disbanding and regrouping

  5. Papaveraceae

  6. Fumariaceae

  7. Capparaceae

  8. Brassicaceae

  9. Brassicaceae

  10. Tovariaceae

  11. Resedaceae

  12. Moringaceae Moringa spp.

  13. Bretschneideraceae(in Akaniaceae) Bretschneidera spp.

  14. Engler’s morphological circumscription : • Families have : • Cymose or panniculate inflorescences • Highly dissected simple leaves (compound) • Numerous stamens

  15. Cronquist (1988) • Capparales • Capparaceae • Brassicaceae • Tovariaceae • Resedaceae • Moringaceae • Compound leaves • Parietal placentation • Presences of glucosinolates • Mustard oil! • Hypogynous • Sapindales • Bretschneideraceae • Compound/cleft leaves • Haplostemonous/diplostemo-nous androecium • Well developed nectary disk • Syncarpous ovary (1-2 ovules per) • (Char indiv. In Rosales but not all together) • Papaverales • Papaveraceae • Fumariaceae • 2 sepals • 3-aperature pollen • Absence of ethereal oils • Recent origin • Isoquinoloine alkaloids

  16. Angiosperm Phylogeny Group II (2003) • Brassicales • Capparaceae(in Brassicaceae) • Brassicaceae • Tovariaceae • Resedaceae • Moringaceae • Bretschneideraceae(in Akaniaceae) • Monophyly of Brassicales and Capparales based on chloroplast sequence • Mustard oils! (glucosinolates) • 4-merous flowers, tetradynamous stamens • Seeds with curved/folded embryos • Lacking/nearly lacking endosperm • (5-merous straight embryos, parietal plac, endosperm in Moringaceae & Akariaceae) • Ranunculales • Papaveraceae • Fumariaceae • (Berberidaceae) • (Ranunculaceae) • Combined Ranunculales + Papaverales • Herbaceous • Toothed/lobed/compound leaves • Presence of alkaloids (isoquinoline type) • Hypogynous, parts free and distince • Numerous stamens • Seeds w/tiny embryos • Copious endosperm

  17. End

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