A phylogenetic system of phanerogams is not to be hazarded in the roughest outline.
A Manual of the phanerogams and Pteridophytes of, being vol.
These characters connect them with the phanerogams, or flowering plants.
The first Part related to the phanerogams only, arranged according to the Linnaean system.
What families, either through their mass of individuals or their number of species, take precedence of the other phanerogams?
If we suppose that they exceed only by 2000 the estimated number of phanerogams, we shall obtain a total of just half-a-million!
I suspect crustacea would show more difference in the extreme forms than phanerogams, but, as you say, it is wild speculation.
Among all the phanerogams the annuals are not more than fifty per cent., and the biennials one or at most two per cent.
The cambium of the phanerogams may be regarded as the very type of a complex-equipotential system, promoting restitution of form.
At present 435 species of phanerogams and vascular cryptogams are known; the lower orders have been little investigated.