Very few aquatic plants are pollinated under water, but this is wellknown to occur in species of Zostera and of Naias.
Water-pollinated plants, Hydrophilae.
Pollinated under the water' e.g.
Wind-pollinated plants, Anemophilae.
- C. Animal-pollinated plants, Zoidiophilae, are subdivided according to the kind of animal by agency of which pollination is effected, thus: a.
The Gramineae offer a prominent example of a dominant self-pollinated or wind :pollinated family, and this may find explanation in a multiplicity of factors.
Grasses are generally wind - pollinated, though selffertilization sometimes occurs.
In 1906 he gave an account of the early stages of development of the male and female organs and, among other interesting statements in regard to the general biology of Welwitschia, he expressed the opinion that, as Hooker suspected, the ovules are pollinated by insect-agency.