What's the difference between acrogen and flowerless?
Acrogen
Definition:
(n.) A plant of the highest class of cryptogams, including the ferns, etc. See Cryptogamia.
Example Sentences:
(1) Under scanning electron microscopy, the surface of the spore showed pineapple-like form, the cluster of the acrogenous spores presented flower shape, and the antler-like hyphae appeared twisted in the culture.