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Published byTamsin Payne Modified over 8 years ago
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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, A=Co, 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 simp[le 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 K 5 C 5 A (5)10,15, filaments often slightly connate G 5conn Fruit a schizocarp, persistent style column
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Note the fruits in picture above and on the right Persistent style
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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 http://www.mobot.org/MOBOT/Research/APweb/welcome.html The Angiosperm Phylogeny Group’s home page
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Euphorbiaceae
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