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FORBS herbaceous dicots Ruth Newell tinker’s coffee goldenrod • broad-leaved herbs that die back to ground level in winter • perennials grow back each year from underground reserves • annuals (e.g. touch-me-nots) die altogether leaving only seeds alive Flip through slides..rose, buttercup, mustard etc..getting main point of families. Slow down for flower symmetry and flower arrangement slides. PLANT FAMILIES IN FOUR PARTS: A) RADIAL SYMMETRY B) BILATERAL SYMMETRY C) COMPOSITE ARRANGEMENTS D) UMBEL ARRANGEMENT A C B D PART A: FLOWERS with RADIAL SYMMETRY Ranunculaceae, the buttercup family. Characteristics: herbs, radially symmetrical flowers, 5 petals & sepals, many stamens and unfused ovaries, compound leaves, sheathing petioles. Yellow Water-crowfoot, native; Ranunculus gmelinii compound leaf Ranunculus repens, exotic; creeping buttercup Tall Meadow Rue Thalictrum pubescens -- Lacey leaf -- No petals compound lvs. Rosaceae, Rose Family. usu. radially symmetrical flrs., 5 petals, many stamens; alternate lvs., serrate margins, stipules. Purple Avens Geum rivale) Marsh Cinquefoil Comarum palustre Brassicaceae Mustard Family Characteristics (fam.): herbs; 4 sepals, 4 petals, 6 stamens, 2loculed ovaries; acrid juice, mustard oils. “Cruciferae Family” (crossed petals) Yellow Rocket (Barbarea vulgaris) Cuckoo Flower Cardamine pratensis Primulaceae, Primrose Family family characteristics: herbaceous plants petals and sepals 5-parted but both fused into tube at base stamens attached to inside petal tube, opposite petal lobe entire leaves swamp candle Lysimachia terrestris Onagraceae, Evening Primrose family Hairy Willow-herb (Epilobium ciliatum) petals & sepals usu. four-parted, petal fused into tube at base. diverse genus in NS, Epilobium (willow-herbs), with 9 species. Polygonaceae, Knotweed Family lady’s thumb, Polygonum persicaria no clear distinction between petals and sepals: accessory organs are termed “tepals” nodes have sheathing stipules, ochrea ochrea sheath petaloid tepals in Rumex