202 SOUTH AFRICAN BOTANY 
What characteristics of the perfect floret are common to all 
three P 
4, Briefly describe :— 
(a) the type of fruit ; 
(0) The method of securing cross-pollination, found in any 
three of the following genera or of other members of the same 
orders :— 
(1) Hibiscus ; 
(2) Pelargonium ; 
(3) Leucadendron ; 
(4) Datura ; 
(5) Disa; 
(6) Gladiolus ; 
(7) Asparagus ; 
(8) Haemanthus ; 
(9) Helianthus. 
5. Describe the structure of a typical stamen. Mention the 
chief features of the androecium in each of the following 
plants :— 
Helianthus ; 
Pisum ; 
Salvia, or Erica; 
Brassica ; 
Rosa or Protea; 
Gladiolus. 
6. Give as full an account as you can of the following 
South African plants, and of the Natural Orders to which each 
belongs. 
Make a floral diagram in each case, state whether they are 
insect or wind-pollinated, and describe how their seeds are 
distributed :— 
Asparagus ; 
Gladiolus ; 
Senecio ; 
Erica, or Salvia. 
7. Give an account of three of the following genera as illus- 
trating the orders to which they belong :— 
