Souvenir Sheet: Flowers (South-West Africa 1990)
Flowers (South-West Africa 1990)
01 February (South-West Africa ) within release Flowers (1990) goes into circulation Souvenir Sheet Flowers face value 60 South African cent
| Souvenir Sheet Flowers in catalogues | |
|---|---|
| Michel: | Mi:NA-SW BL11 |
| Stamp Number: | Sn:NA-SW 644a |
| Yvert et Tellier: | Yt:NA-SW BF11 |
Souvenir Sheet is square format.
Also in the issue Flowers (1990):
- Stamp - Flowers- Adenium boehmianum face value 18;
- Stamp - Flowers- Adansonia digitata face value 35;
- Stamp - Flowers- Kigelia africana face value 45;
- Stamp - Flowers- Harpagophytum procumbens face value 60;
- Stamp - Flowers- Harpagophytum procumbens face value 60;
- Souvenir Sheet - Flowers face value 60;
Souvenir Sheet Flowers it reflects the thematic directions:
A flower, sometimes known as a bloom or blossom, is the reproductive structure found in plants that are floral (plants of the division Magnoliophyta, also called angiosperms). The biological function of a flower is to effect reproduction, usually by providing a mechanism for the union of sperm with eggs. Flowers may facilitate outcrossing (fusion of sperm and eggs from different individuals in a population) or allow selfing (fusion of sperm and egg from the same flower). Some flowers produce diaspores without fertilization (parthenocarpy). Flowers contain sporangia and are the site where gametophytes develop. Many flowers have evolved to be attractive to animals, so as to cause them to be vectors for the transfer of pollen. After fertilization, the ovary of the flower develops into fruit containing seeds. In addition to facilitating the reproduction of flowering plants, flowers have long been admired and used by humans to beautify their environment, and also as objects of romance, ritual, religion, medicine and as a source of food.
