Malvaceae

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Malvaceae

  1. 1. Malvaceae<br />Mallow Family<br />
  2. 2. 250 genera<br />4230 species<br />
  3. 3. Consists of hermaphroditic, rarely monoecious or polygamous trees, shrubs or herbs<br />Often with either stellatetrichomes or peltate scales<br />Eudicot<br />
  4. 4. Leaves<br />Simple or palmatelycoumpound<br />Sometime lobed to divided<br />Palmately or pinnately veined<br />Usually spiral and stipulate<br />Stipules often caducous<br />Caducous- falling early before associated organs are mature <br />
  5. 5. Inflorescence<br />Solitary<br />Paired flower<br />Cymelike<br />Complex (sometimes)<br />
  6. 6. Flower<br />Bisexual (rarely Unisexual)<br />most Actinomorphic<br />Epicalyx typically present<br />Hypogynous (situated below the ovary)<br />
  7. 7. Perianth<br />Biseriate (arranged in two rows)<br />Petals alternating with sepals<br />
  8. 8. Calyx<br />Aposepalous (distinct sepals)<br />Basally synsepalous (flowers with fused sepals)<br />5 [less often 3 or 4]<br />Valvate sepals (meeting without overlapping)<br />
  9. 9. Corolla<br />Apopetalous (distinct, separate petals)<br />Sometmesadnate to the base of an androecium tube<br />Rarely absent<br />5 [3, 4]<br />Clawed, convolute, valvate or imbricate petals<br />
  10. 10. Stamen<br />5 ∞<br />Filaments usually connate<br />Either as tube surrounding the ovary or bundles of stamens or a tube bearing bundles<br />
  11. 11. Anthers & Pollen<br />Anther: longitudinal or poricidal (through pores) dehiscence<br />Pollen: spinulose or smooth<br />
  12. 12. Gynoecium<br />Syncarpous (carpels connate into single unit)<br />Superior ovary<br />2 ∞ carpels<br />2 ∞ [1] locules<br />
  13. 13. Style, Placentation & Nectaries<br />Style: Unlobed, lobed or branched at apex<br />Placentation: axile<br />Nectaries: consists of glandular trichomes typically present at the adaxial base of the calyx<br />
  14. 14. Fruit & Seeds<br />Fruits:<br />Loculicidal<br />Septicidal<br />Indehiscent capsule<br />Schizocarp of mericarps<br />Rarely berry or samara<br />Seeds:<br />Exalbuminous (no endosperm) or<br />Endorspermous (oily and starchy endosperm)<br />
  15. 15. Economic Importance<br />Fiber Plants:<br />Gossypium spp. (cotton, world’s most important plant)<br />Ceibapentandra (kapok)<br />Corchorus spp. (jute, source of burlap)<br />Food and Flavoring Plants<br />Theobroma cacao (cacao, source of chocolate)<br />Cola nitida(cola)<br />Abelmoschus (okra)<br />Duriozibethinus (Durian)<br />
  16. 16. Economic Importance<br />Wood<br />Ochromapyramidale(balsa)<br />Pachiraaquatica (money tree)<br />Ornamental<br />Brachychiton<br />Dombeya<br />Fremontodendron<br />Hibiscus (mallows)<br />Tilia (linden tree)<br />
  17. 17. PICTURES <br />
  18. 18. PICTURES  (DURIAN)<br />

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