.KEY TO THE FAMILIES OF
FLOWERING PLANTS IN IRAQ
BY
IHSAN AL-SHEHBAZ
3rd EDITION , 1977
1. Leaves mostly parallel-veined ; flowers mostly trimerous (monocots).......................169
1. Leaves mostly reticulate -veined ; flowers mostly tetramerous or pentamerous (Dicots).................................................................................................................................2
2. Perianth present...........................................................................................................6
2. Perianth absent............................................................................................................3
3. Stem jointed ; leaves scaly..................................................................CASUARINACEAE
3. Stem not jointed ; leaves broad , green..............................................................................4
4. Inflorescence a cyathium...........................................................EUPHORBIACEAE
4. Inflorescence , at least the male, a catkin..................................................................5
5. Fruit a capsule; seeds comose.....................................................................SALICACEAE
5. Fruit a nut; seeds not comose....................................................................BETULACEAE
6. Corolla present........................................................................................................51
6.Corolla absent, or periath undifferentiated.............................................................7
7. Perianth is shed as a lid at anthesis.........................................................MYRATACEAE
7. Perianth persistent, or shed after anthesis........................................................................8
8. Flowers bisexual......................................................................................................35
8. Flowers unisexual.....................................................................................................9
9. Male flowers in catkin.......................................................................................................10
9. Male flowers in other inflorescences................................................................................13
10. Leaves compound, estipulate................................................. JUGLANDACEAE
10. Leaves simple, stipulate........................................................................................11
11. Ovary superior, placentation pendulous...................................................MORACEAE
11. Ovary inferior, placentation axile..................................................................................12
12. Carpels 2; fruit not subtended by a cupule...............................BETULACEAE
12. Carpels 3-6; fruit subtended by a cupule........................................FAGACEAE
13. Flowers borne inside a fleshy closed receptacle........................................MORACEAE
13. Flowers exposed...............................................................................................................14
14. Parasites, without chlorophyll...........................................CYNOMORIACEAE
14. Chlorophyll always present................................................................................15
15. Terrestrial herbs, shurbs, or trees................................................................................17
المادة المعروضة اعلاه هي مدخل الى المحاضرة المرفوعة بواسطة استاذ(ة) المادة . وقد تبدو لك غير متكاملة . حيث يضع استاذ المادة في بعض الاحيان فقط الجزء الاول من المحاضرة من اجل الاطلاع على ما ستقوم بتحميله لاحقا . في نظام التعليم الالكتروني نوفر هذه الخدمة لكي نبقيك على اطلاع حول محتوى الملف الذي ستقوم بتحميله .