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Habit trees and shrubs, rarely herbs, usually armed

Rosidae. Rosaceae -- the rose family (100/3000; Cosmopolitan, most common in temperate subtropical N. Hemisphere). Habit trees and shrubs, rarely herbs, usually armed Leaves alternate (opposite); simple or compound, distinctive serrations ; stipulate

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Habit trees and shrubs, rarely herbs, usually armed

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  1. Rosidae Rosaceae -- the rose family (100/3000; Cosmopolitan, most common in temperate \subtropical N. Hemisphere) • Habit trees and shrubs, rarely herbs, usually armed Leaves alternate (opposite); simple or compound, distinctive serrations; stipulate Inflorescences variable: determinate or indeterminate Special floral characters hypanthium well developed, nectary disk around the rim of the hypanthium, perianth whorls in 5s with numerous exserted stamens Calyx 5 (4-many) sepals, connate Corolla 5 (4-many) petals Androecium 10-many stamens Gynoecium covers nearly all possible variation, however apocarpy is common in many members Fruit= drupe, pome, aggregate of follicles, achenes or drupes • (Floral formula: Ca 5 Co 5 A10-G1-)

  2. Rosidae Family RosaceaeSubfamily Spiraeoideae • Habit woody Leaves simple; considered estipulate (what do you think?) Ovary position superior, perigynous Gynoecium mostly apocarpous; 2-many ovules/carpel Fruit= aggregate of follicles (rarely a capsule) Examples: Spiraea, Physocarpus

  3. Rosidae Family RosaceaeSubfamily Rosoideae • Habit herbs/shrubs Leaves compound; stipulate Ovary position superior, perigynous Gynoecium apocarpous; 1-2 ovules/carpel Fruit= aggregate of achenes or drupes Examples: Cercocarpus, Fragria, Potentilla, Rubus, Rosa

  4. Rosidae Family RosaceaeSubfamily Prunoideae • Habit woody Leaves simple; stipulate Ovary position superior, perigynous Gynoecium apocarpous (1 carpel, rarely 2-5 distinct); 1-2 ovules/carpel Fruit= drupe Examples: only Prunus

  5. Rosidae Family RosaceaeSubfamily Maloideae • Habit woody Leaves simple; stipulate Ovary position inferior, epigynous Gynoecium synocarpous (2-5 carpels); 1-2 (many) ovules/carpel Fruit= pome Examples: Amelanchier, Crataegus, Malus, Pyrus, Pyracanthus, Sorbus

  6. ß-family Rosidae Grossulariaceae -- the gooseberry and currant family (25/350; cosmopolitan) • Habit trees or shrubs sometimes armed • Leaves alternate; simple, estipulate • Inflorescences racemes, solitary, or axillary clusters • Special floral characters: hypanthium well developed, often with a prominent nectary disc, sepals persistent in fruit • Calyx 4-5 sepals • Corolla 4-5 petals • Androecium5 stamens • Gynoecium 1-3 carpels, connate; superior (rarely inferior) • Fruit= berry or capsule • (Floral formula: Ca4-5Co4-5 A5 G 1-3 )

  7. ß-family Rosidae Saxifragaceae (s.s.) -- the saxifrag family (40/700; cosmopolitan, mostly in cool and cold areas) • Habit herbs • Leaves commonly basal, also cauline, palmately lobed with glandular pubescence, alternate; estipulate • Inflorescence corymb or raceme • Special floral characters: prominent interstaminal nectary disk • Calyx5 sepals • Corolla5 petals • Androecium8-10 distinct • Gynoecium 2 carpels fused at base, but with two distinct styles; many ovules, axile placentation • Fruit= follicles with persistent styles • (Floral formula: Ca5 Co5 A8-10 G 2 )

  8. Rosidae Fabaceae (Leguminosae) --the legume family (690-800/14,000- 20,000; cosmopolitan) • Habitherbs, shrubs, trees (rarely lianas e.g. Bauhinia) • Leaves alternate; usually pinnate to bipinnately compound (simple, palmate, trifoliate); stipulate; pulvinus at petiole and/or petiolule base • Inflorescence various • Special floral characters:slight hypanthium may be present; corolla specialized in Faboideae with banner, keel, and wings • Calyx5 sepals, connate • Corolla5 (0-1) petals, distinct • Androecium1- many stamens, distinct or connate as 9 + 1 = diadelphous or all 10 stamens • Gynoecium 1 carpel; superior; 1- many marginal ovules • Fruit= legume, or legume-derived loment or indehiscent pod • (Floral formula: Ca 5 Co 5 A 1-  G 1 )

  9. Rosidae Family FabaceaeSubfamily Mimosoideae • Distribution Mostly tropical Leaves mostly bipinnate Floral symmetry actinomorphic Androecium 10-many usually distinct Examples: Acacia, Cercidium, Mimosa, Prosopis

  10. Rosidae Family FabaceaeSubfamily Caesalpinioideae • Distribution Mostly tropical Leaves pinnate or bipinnate Floral symmetry actinomorphic to zygomorphic Androecium 10 stamens, distinct or connate Examples: Caesalpinia, Cassia

  11. Rosidae Family FabaceaeSubfamily Papilionoideae (or Faboideae) • Distribution tropical and temperate Leaves pinnately or palmately compound Floral symmetry stronglyzygomorphic Androecium 10 stamens, usually diadelphous = 9 + 1 Examples: Lupinus, Pisum, Robinia, Phaseolus

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