|
|||
 |
Plants produce nectar which attracts all sorts of visitors. There are two general classes of Nectaries, floral and extra-floral. The nectar in this case is produced by cells at the base of the flowers. | ||
 |
Species of Euphorbia produce large showy Nectaries. Poinsettia belongs to the same family. | ||
 |
Another inviting Nectary produced at the base of the gynoecium. | ||
 |
Extra-floral Nectaries of the passion flower (Passiflora). Locate the critters in the linked picture. | ||
 |
Extra-floral Nectaries on the petiole of Ricinus (Castor Oil plant). The disk-shaped Nectaries are on the petiole where it joins the leaf blade. Ricinus is also a member of the Euphorbiaceae. Secretion runs wild in this family! | ||
 |
|||
 |
Cross-section of a Ricinus Nectary. The secretory cells are on the upper surface in the center of the image. | ||
 |
The secretory cells develop from the Epidermis. Non-secretory cells are on the left side of the image. The elongating columnar cells are becoming secretory in nature. | ||
| Lecture
Directory |
 Prior Page |
 Home Page |
 Next Page |
|---|---|---|---|
