The flowers of a willow tree are called catkins. There is no standard collective noun for catkins, but based on their natural formation you could use the collective noun a cluster of catkins.
No, the word 'wasp' is a singular, common, concrete noun; a word for an insect; a word for a thing.A collective noun is a word used to group people or things taken together as one whole. Some collective nouns for wasps are a nest of wasps, a willow of wasps, a colony of wasps.
It is a 'bouquet of flowers'. A 'bunch of flowers' is also a noun that could be used.
bundle
Grist
We bought a bouquet of flowers for mother.They had a nice arrangement of flowers on each table.
Catkin
The collective term for the male parts of a flower is called the stamen. This comprise of the anthers and the filament.
The collective name for the petals of a flower is the corolla.
It isn't a flower, it's a tree. Called the "Pussy-Willow"
it is called a carpel or pistil
The Lemmings eat the Dwarf Willow flower
Alaska's state flower is the alpine forget-me-not.
The answer is Squash Flower , Begonia Flower , Maize ,Hazelnut,willow And Oak
The willow shoot is called the Osier.
It is called the stamen which consists of the filaments, anthers and the pollen grains
Bunch
The noun perianth is a collective term for all the petals and sepals.