9. Almost Rosids to Rosids
Santalales Lots of parasitism Polyacetylenes 1-seeded ovules, pendulous and
free-central placentation Molecules In ours, flowers not prominent Families not on required list
“Santalaceae” Hemiparasites Root parasites
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
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
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
Saxifragales Some families chiefly (only?) on
molecular data Hypanthium, 2-united carpels,
glandular leaf teeth Retained: 5-merous flowers with
separate parts
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
Crassulaceae
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
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
Note the fruits in picture aboveand on the right
Persistent style
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 Group’s home page
Euphorbiaceae
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