9.Almost Rosids to Rosids

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9. Almost Rosids to Rosids
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Santalales

• Lots of parasitism
• Polyacetylenes
• 1-seeded ovules, pendulous and free-central
  placentation
• Molecules
• In ours, flowers not prominent
• Families not on required list

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Santalaceae

• Hemiparasites
• Root parasites

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Viscaceae

• Epiphytic parasites
• Haustoria
• Stems jointed
• Lvs opp, oft. Coriaceous or succ.
• Flrs unisex, inconspic, radial
• T3-4A3 (no fil),G3-4, inf. Viscous berry
• Passive gametophyte
• Pantrop some temperate

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Loranthaceae

• Us. Epiphytes
• Lv opp or almost so
• Flrs bisex, rad or bilat
• Ca rimCo(3)5-6(9), distinct or conn, oft. Red or
  yellow, ACo, opp, fil adnate
• Aggr. gametophyte
• Tropical

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ROSIDS

• Weakly supported group
• Also some lack of clarity of relationships within
• Lots of representatives in our part of the world
• Hypanthium features in many families
• Radial symmetry common

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Saxifragales

• Some families chiefly (only?) on molecular data
• Hypanthium, 2-united carpels, glandular leaf
  teeth
• Retained 5-merous flowers with separate parts

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Saxifragaceae

• Two interpretations Shaw as in text Welsh
  much broader (older)
• Herbs, often basal leaves, alt. NO STIPULES
• Flr rad to bilat, HYPANTH,
• Ca4-5 sometimes connate, Co4-5, oft. Clawed, St
  3-10. G2(-5), connate, varying position, axile,
  oft. nectar disk
• Fr. Capsule or follicle

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Crassulaceae
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Geraniales

• Five families, 1 in north Utah
• Morphological features of order
• Leaf margins with glandular teeth
• Inflorescence cymose
• Calyx persistent in fruit
• A few other characters
• Anomocytic stomates
• Vessel elements with simple perforations

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Geraniaceae

• Remarkable feature is fruit
• Herbs to subshrubs stems usually jointed at
  nodes
• Hairs glandular, with aromatic oils (I.e., smelly
  plants)
• Stipules present, leaves with gland. Teeth
• K5C5A(5)10,15, filaments often slightly
  connateG5conn
• Fruit a schizocarp, persistent style column

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Persistent style
Note the fruits in picture above and on the right
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Malpighiales

• This order contains 7.8 of the diversity of
  angiosperm diversity
• There does not seem a whole lot tying it
  together, see http//www.mobot.org/MOBOT/Research
  /APweb/welcome.html
• The Angiosperm Phylogeny Groups home page

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Euphorbiaceae