| The majority of grasses in which cleistogamy occurs have both chasmogamous flowers and either one or two types of cleistogamous flowers. |
| F 1 plants had chasmogamous flowers, indicating that chasmogamy was dominant to cleistogamy. |
| His view that cleistogamous flowers are derived from originally chasmogamous flowers has been confirmed by more recent researches. |
| Almost all these plants, as Darwin pointed out, have also chasmogamous flowers which render cross-fertilisation possible. |
