Souvenir Sheet: Flowers and Robert Koch (Yemen, Arab Republic 1982)
Flowers and Robert Koch (Yemen, Arab Republic 1982)
01 August (Yemen, Arab Republic ) within release Centenary of the Discovery of the Tuberculosis Bacillus goes into circulation Souvenir Sheet Flowers and Robert Koch face value 4*125 Yemeni fils
| Souvenir Sheet Flowers and Robert Koch in catalogues | |
|---|---|
| Michel: | Mi: YE-AR BL225 |
| Stamp Number: | Sn: YE-AR C117 |
| Stanley Gibbons: | Sg: YE-AR MS 708b |
Souvenir Sheet is horizontal format.
Also in the issue Centenary of the Discovery of the Tuberculosis Bacillus:
- Stamp - Bunch of grapes and flowers face value 75;
- Stamp - Cherries and flowers face value 100;
- Souvenir Sheet - Flowers and Robert Koch face value 4*125;
- Souvenir Sheet - Fruits and Robert Koch face value 4*100;
- Stamp - Lemons and flowers face value 125;
- Stamp - Oranges face value 25;
- Stamp - Pears face value 50;
- Stamp - Quince and flowers face value 60;
- Stamp - Apples and R.Kock face value 100;
- Stamp - Apricots and R.Kock face value 100;
- Mini Sheet - Bunch of grapes and flowers face value 75;
- Mini Sheet - Cherries and flowers face value 100;
- Stamp - Flowers and R.Kock face value 125;
- Stamp - Flowers and R.Kock face value 125;
- Stamp - Flowers and R.Kock face value 125;
- Stamp - Flowers and R.Kock face value 125;
- Mini Sheet - Lemons and flowers face value 125;
- Mini Sheet - Oranges face value 25;
- Mini Sheet - Pears face value 50;
- Stamp - Plums and R.Kock face value 100;
- Mini Sheet - Quince and flowers face value 60;
- Stamp - Raspberries and R.Kock face value 100;
Souvenir Sheet Flowers and Robert Koch 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.
