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Lab quiz 1 on Friday – Mosses, pteridophytes and conifers OBE seminars today 12:10 (SB 117) Marnie Rout 4:10 (ISB 110) Lila Fishman Major groups within Eudicots Monocots Basal Caryophyllids Rosids Eudicots Eudicots Asterids Ranunculaceae - Buttercup family Key features In Montana: 14 genera, ~80 species (>30 in Ranunculus) Habit: mostly herbs, some shrubs and vines Leaves: alternate, basal, spirally arranged simple, lobed or compound usually dentate, no stipules Ranunculaceae - Buttercup family Key features Inflorescences: variable Flowers: very diverse • mostly perfect (bisexual) • some dioecious Ranunculaceae - Buttercup family Flower characters Symmetry: mostly radial (regular), some bilateral Sepals: 4-merous, 5-merous, or (not 3’s) Petals: reduced, 5-merous, or Stamens: numerous, filaments unfused Carpels: 3 - , sometimes 1 unfused superior ovaries lateral placentation of ovules Ranunculus - Buttercups Habit: perennial herbs, often found in moist areas Ranunculus - Buttercups Leaves: alternate or basal leaf shape variable (even within plants) simple --> lobed --> deeply divided --> compound Inflorescences: solitary or small clusters Ranunculus - Buttercups Flowers: regular (radially symmetric), usually yellow Ranunculus -- Buttercups Sepals: 5, may be deciduous Petals: 5 or 5-merous Stamens: numerous Carpels: numerous, unfused Ranunculus -- Buttercups Fruit type: achene = dry indehisent fruit w/ thin coat over 1 seed 1 achene Aquilegia - Columbines Habit: perennial herbs, moist areas Leaves: alternate or basal leaves ternately compound Inflorescences: solitary or clusters Flowers: regular, spurred Aquilegia -- flower characters Sepals: 5, showy Petals: 5, showy w/ spurs Stamens: Carpels: usually 5 Aguilegia species often hybridize photos: Scott Hodges Delphinium - Larkspurs Ecology/distribution: open woodlands, grasslands Delphinium - Larkspurs Habit: perennial herbs Leaves: alternate or basal palmately lobed/compound Delphinium - Larkspurs Inflorescence: raceme Flowers: perfect, irregular, spurred Delphinium -- flower characters Sepals: 5, petal-like, 1 sepal spurred Petals: 4, reduced, 1 spurred (inside sepal spur) Stamens: numerous Carpels: usually 3 Aquilegia and Delphinium fruit type follicle = dry, dehiscent carpel splitting along 1 suture Delphinium Aquilegia Some other Ranunculaceae here Clematis Aconitum Anemone Thalictrum Berberidaceae - Barberry family Key features In Montana: 1 or 2 genera, <3 native species Habit: herbs or shrubs (only shrubs here), wood yellowish Leaves: usually alternate; simple, lobed or compound Mahonia (now Berberis) - Oregon Grape Habit: low shrubs Leaves: alternate, variable, w/ spinose teeth pinnately compound and evergreen in Mahonia only Inflorescence: raceme Flowers: perfect, regular Mahonia/Berberis -- flower characters Sepals: 6, whorled Petals: 6, smaller than sepals Stamens: 6, touch sensitive Carpels: 1; ovary superior basal placentation of ovules Mahonia/Berberis -- fruit type berry = indehiscent fruit soft inside except for seeds Mahonia/Berberis other true berries Another large family in the basal eudicots Papaveraceae Argemone (Prickly Poppy) Papaver somniferum (Opium Poppy) Saxifraga Populus tremuloides (Aspen)
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